[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:6988":3},{"id":4,"longid":5,"guid":6,"name":7,"shortcode_ima":8,"entrytype":9,"entrytype_text":10,"varietyof":11,"synid":11,"polytypeof":11,"groupid":12,"weighting":13,"nolocadd":14,"blacklisted":14,"mindat_formula":15,"mindat_formula_note":11,"ima_formula":16,"elements":17,"sigelements":24,"key_elements":11,"impurities":11,"cim":11,"ima_status":25,"ima_notes":11,"ima_history":11,"approval_year":28,"publication_year":11,"discovery_year":11,"strunz10ed1":29,"strunz10ed2":30,"strunz10ed3":31,"strunz10ed4":32,"dana8ed1":33,"dana8ed2":34,"dana8ed3":35,"dana8ed4":34,"csystem":36,"cclass":37,"spacegroup":38,"spacegroupset":39,"a":40,"b":41,"c":42,"alpha":43,"beta":44,"gamma":43,"aerror":11,"berror":11,"cerror":11,"alphaerror":11,"betaerror":11,"gammaerror":11,"va3":11,"z":45,"csmetamict":14,"commentcrystal":46,"twinning":47,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":48,"tlform":11,"hmin":49,"hmax":50,"hardtype":11,"vhnmin":43,"vhnmax":43,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":51,"dmeas2":52,"dcalc":53,"dmeaserror":11,"dcalcerror":11,"commentdense":11,"lustre":54,"lustretype":55,"commentluster":56,"diapheny":57,"streak":58,"colour":59,"commentcolor":11,"colors":60,"streak_colors":67,"luminescence":11,"uv":11,"cleavage":68,"cleavagetype":69,"fracturetype":70,"tenacity":71,"commentbreak":11,"opticaltype":72,"opticalsign":73,"opticalalpha":74,"opticalalpha2":75,"opticalalphaerror":11,"opticalbeta":76,"opticalbeta2":77,"opticalbetaerror":11,"opticalgamma":78,"opticalgamma2":79,"opticalgammaerror":11,"opticalomega":43,"opticalomega2":43,"opticalomegaerror":11,"opticalepsilon":43,"opticalepsilon2":43,"opticalepsilonerror":11,"opticaln":43,"opticaln2":43,"opticalnerror":11,"optical2vcalc":43,"optical2vcalc2":80,"optical2vcalcerror":11,"optical2vmeasured":81,"optical2vmeasured2":82,"optical2vmeasurederror":11,"rimin":83,"rimax":84,"opticaldispersion":85,"opticalpleochroism":11,"opticalpleochorismdesc":11,"opticalbirefringence":11,"opticalcomments":11,"opticalcolour":11,"opticalinternal":11,"opticaltropic":11,"opticalanisotropism":11,"opticalbireflectance":11,"opticalextinction":86,"opticalr":11,"specdispm":11,"ir":11,"electrical":11,"magnetism":11,"thermalbehaviour":11,"other":11,"industrial":11,"occurrence":11,"otheroccurrence":87,"type_specimen_store":11,"description_short":88,"aboutname":89,"rock_parent":11,"rock_parent2":11,"rock_root":9,"rock_bgs_code":11,"meteoritical_code":11,"updttime":90,"reviewed_at":11,"variety_of":11,"varieties":91,"group_members":95,"associates":120,"confused_with":138,"type_localities":139,"occurrence_total":144,"citations":145,"images":168,"structures":428,"synonyms":459,"language_names":461,"wikidata_qid":481,"texts":482},6988,"1:1:6988:1","6311f3b5-b1e7-43d3-856e-3d80a89ea48d","Heulandite-Ca","Hul-Ca",0,"mineral",null,1889,10337,false,"(Ca,Na)\u003Csub>5\u003C\u002Fsub>(Si\u003Csub>27\u003C\u002Fsub>Al\u003Csub>9\u003C\u002Fsub>)O\u003Csub>72\u003C\u002Fsub>·26H\u003Csub>2\u003C\u002Fsub>O","(Ca,Na,K)\u003Csub>5\u003C\u002Fsub>(Si\u003Csub>27\u003C\u002Fsub>Al\u003Csub>9\u003C\u002Fsub>)O\u003Csub>72\u003C\u002Fsub> · 26H\u003Csub>2\u003C\u002Fsub>O",[18,19,20,21,22,23],"Al","Ca","Na","Si","O","H",[18,19,21,22,23],[26,27],"APPROVED","GRANDFATHERED",1997,"9","G","E","05","77","1","4","Monoclinic",5,11,"C2\u002Fm ","17.73","17.82","7.43","0","116.33",2,"Merkle & Slaughter (1967). The reduced cell has beta ~113°. May be triclinic due to Al-Si ordering.","{100} is twin and contact plane.","Rhombic prisms, or coffin-shaped tabular crystals, granular, massive.  Often in curved aggregates.",3.5,4,"2.1","2.2","2.17","Vitreous , Pearly","Vitreous,Pearly","Pearly on cleavage {010}","Transparent","White","White, colorless, red, yellow, brown, green",[61,62,63,64,65,66],"white","colorless","red","yellow","brown","green",[61],"Perfect on the {010}","Perfect","Irregular\u002FUneven,Sub-Conchoidal","brittle","Biaxial","+","1.491","1.505","1.493","1.503","1.5","1.512","76","10","48",1.491,1.512,"r > v distinct","Z = b; X ∧ a = 0°-34°; Y ∧ c = 0°-32°.","Cavities in basalt and as a devitrification product from volcanic glasses.","The calcium analogue of Heulandite-Ba, Heulandite-K, Heulandite-Na, and Heulandite-Sr. \r\nClinoptilolite-Ca-Heulandite-Ca Series.","Named in 1822 by Henry James Brooke in honour of Johann Heinrich \"John Henry\" Heuland (21 March 1778, Beyreuth, Germany - 16 November 1856, Hastings, Sussex, England, UK), a mineral collector and mineral dealer living in England and for the suffix indicating dominant Ca. Despite having an international reputation, there are no known images of Henry Heuland.","2025-08-11 12:14:28",[92],{"id":93,"name":94,"entrytype":45,"csystem":11,"ima_formula":11,"mindat_formula":15,"hmin":49,"hmax":50,"dmeas":52,"dcalc":11,"primary_image_id":11},5627,"Beaumontite (of Lévy)",[96,102,108,114],{"id":97,"name":98,"entrytype":9,"csystem":36,"ima_formula":99,"mindat_formula":100,"hmin":49,"hmax":49,"dmeas":101,"dcalc":101,"primary_image_id":11},25719,"Heulandite-Ba","(Ba,Ca,K)\u003Csub>5\u003C\u002Fsub>(Si\u003Csub>27\u003C\u002Fsub>Al\u003Csub>9\u003C\u002Fsub>)O\u003Csub>72\u003C\u002Fsub> · 22H\u003Csub>2\u003C\u002Fsub>O","(Ba,Ca,K)\u003Csub>5\u003C\u002Fsub>(Si\u003Csub>27\u003C\u002Fsub>Al\u003Csub>9\u003C\u002Fsub>)O\u003Csub>72\u003C\u002Fsub>·22H\u003Csub>2\u003C\u002Fsub>O","2.35",{"id":103,"name":104,"entrytype":9,"csystem":36,"ima_formula":105,"mindat_formula":106,"hmin":107,"hmax":49,"dmeas":43,"dcalc":43,"primary_image_id":11},6989,"Heulandite-K","(K,Ca,Na)\u003Csub>5\u003C\u002Fsub>(Si\u003Csub>27\u003C\u002Fsub>Al\u003Csub>9\u003C\u002Fsub>)O\u003Csub>72\u003C\u002Fsub> · 26H\u003Csub>2\u003C\u002Fsub>O","(K,Ca,Na)\u003Csub>5\u003C\u002Fsub>(Si\u003Csub>27\u003C\u002Fsub>Al\u003Csub>9\u003C\u002Fsub>)O\u003Csub>72\u003C\u002Fsub>·26H\u003Csub>2\u003C\u002Fsub>O",3,{"id":109,"name":110,"entrytype":9,"csystem":36,"ima_formula":111,"mindat_formula":112,"hmin":107,"hmax":49,"dmeas":52,"dcalc":113,"primary_image_id":11},6990,"Heulandite-Na","(Na,Ca,K)\u003Csub>6\u003C\u002Fsub>(Si,Al)\u003Csub>36\u003C\u002Fsub>O\u003Csub>72\u003C\u002Fsub> · 22H\u003Csub>2\u003C\u002Fsub>O","(Na,Ca,K)\u003Csub>6\u003C\u002Fsub>(Si,Al)\u003Csub>36\u003C\u002Fsub>O\u003Csub>72\u003C\u002Fsub>·22H\u003Csub>2\u003C\u002Fsub>O","2.12",{"id":115,"name":116,"entrytype":9,"csystem":36,"ima_formula":117,"mindat_formula":118,"hmin":107,"hmax":49,"dmeas":52,"dcalc":119,"primary_image_id":11},6991,"Heulandite-Sr","(Sr,Ca,Na)\u003Csub>5\u003C\u002Fsub>(Si\u003Csub>27\u003C\u002Fsub>Al\u003Csub>9\u003C\u002Fsub>)O\u003Csub>72\u003C\u002Fsub> · 24H\u003Csub>2\u003C\u002Fsub>O","(Sr,Na,Ca)\u003Csub>5\u003C\u002Fsub>(Si\u003Csub>27\u003C\u002Fsub>Al\u003Csub>9\u003C\u002Fsub>)O\u003Csub>72\u003C\u002Fsub>·24H\u003Csub>2\u003C\u002Fsub>O","2.24",[121,130],{"id":122,"name":123,"entrytype":9,"csystem":124,"ima_formula":125,"mindat_formula":126,"hmin":107,"hmax":107,"dmeas":127,"dcalc":128,"primary_image_id":129},859,"Calcite","Trigonal","Ca(CO\u003Csub>3\u003C\u002Fsub>)","CaCO\u003Csub>3\u003C\u002Fsub>","2.7102","2.711",4401,{"id":131,"name":132,"entrytype":9,"csystem":36,"ima_formula":133,"mindat_formula":133,"hmin":37,"hmax":134,"dmeas":135,"dcalc":136,"primary_image_id":137},1340,"Datolite","CaB(SiO\u003Csub>4\u003C\u002Fsub>)(OH)",5.5,"2.96","3.00",6856,[],[140],{"id":141,"txt":142,"latitude":11,"longitude":11,"country":143},14203,"Strathclyde, Scotland, UK","UK",279,[146,150,155,158,163],{"id":147,"year":148,"html":149,"doi":11},524967,1968,"Merkle, A. B., Slaughter, M. (1968) Determination and refinement of the structure of heulandite. \u003Ci>American Mineralogist\u003C\u002Fi>,  53 (7-8) 1120-1138 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM53\u002FAM53_1120.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":151,"year":152,"html":153,"doi":154},7741414,1972,"Alberti, A. (1972) On the crystal structure of the zeolite heulandite. \u003Ci>TMPM Tschermaks Mineralogische und Petrographische Mitteilungen\u003C\u002Fi>, 18 (2). 129-146 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fbf01081798'>doi:10.1007\u002Fbf01081798\u003C\u002Fa>","10.1007\u002Fbf01081798",{"id":156,"year":28,"html":157,"doi":11},16117720,"Coombs, Douglas S., Alberti, Alberto, Armbruster, Thomas, Artioli, Gilberto, Colella, Carmine, Galli, Ermanno, Grice, Joel D., Liebau, Friedrich, Mandarino, Joseph A., Minato, Hideo, et al. (1997) Recommended nomenclature for zeolite minerals; report of the Subcommittee on Zeolites of the International Mineralogical Association, Commission on New Minerals and Mineral Names. \u003Ci>The Canadian Mineralogist\u003C\u002Fi>,  35 (6). 1571-1606 \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Frruff_1.0\u002Fuploads\u002FCM35_1571.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":159,"year":160,"html":161,"doi":162},147411,1998,"Esenli, Fahri, Kumbasar, Isik (1998) X-Ray Diffraction Intensity Ratios I(111)\u002FI(3¯11) of Natural Heulandites and Clinoptilolites. \u003Ci>Clays and Clay Minerals\u003C\u002Fi>,  46 (6) 679-686 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1346\u002Fccmn.1998.0460608'>doi:10.1346\u002Fccmn.1998.0460608\u003C\u002Fa>","10.1346\u002Fccmn.1998.0460608",{"id":164,"year":165,"html":166,"doi":167},127977,2001,"Comodi, Paola, Gatta, Giacomo Diego, Zanazzi, Pier Francesco (2001) High-pressure structural behaviour of heulandite. \u003Ci>European Journal of Mineralogy\u003C\u002Fi>,  13 (3) 497-505 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1127\u002F0935-1221\u002F2001\u002F0013-0497'>doi:10.1127\u002F0935-1221\u002F2001\u002F0013-0497\u003C\u002Fa>","10.1127\u002F0935-1221\u002F2001\u002F0013-0497",[169,179,188,196,206,214,222,229,236,243,250,258,266,274,281,288,294,300,306,312,320,327,333,339,345,351,357,362,368,373,379,386,392,398,403,409,416,422],{"id":170,"source_url":171,"license_code":172,"credit_html":173,"title":174,"description":175,"author":176,"original_width":177,"original_height":178},58939,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=8163387","CC BY-SA 3.0","Didier Descouens, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=8163387\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","HeulanditeItalie.jpg","Heulandite-Ca \n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality : Drio le Pale, Buffaure Group, Fassa Valley, Trento Province, Trentino-Alto Adige, Italy\u003C\u002Fdd>\n\u003Cdd>Size : 5x4.5cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Didier Descouens",2800,1786,{"id":180,"source_url":181,"license_code":172,"credit_html":182,"title":183,"description":184,"author":185,"original_width":186,"original_height":187},11283,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10165419","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10165419\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Heulandite-Ca-240277.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHeulandite\" class=\"extiw\" title=\"en:Heulandite\">Heulandite-Ca\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FJalgaon_District\" class=\"extiw\" title=\"en:Jalgaon District\">Jalgaon District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMaharashtra\" class=\"extiw\" title=\"en:Maharashtra\">Maharashtra\u003C\u002Fa>, India (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-4624.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 6.3 x 4.6 x 3.7 cm.\u003C\u002Fdd>\n\u003Cdd>An attractive and very unusual 3 cm cluster of reddish-pink Heulandite crystals resting on a matrix of white drusy Quartz. The cluster is actually composed of numerous fan-like and lustrous crystals intergrown into this one ball. Exceptional for color and habit. Ex. Charlie Key stock.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Robert M. Lavinsky",500,446,{"id":189,"source_url":190,"license_code":172,"credit_html":191,"title":192,"description":193,"author":185,"original_width":194,"original_height":195},11292,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10431039","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10431039\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Heulandite-Ca-Quartz-ind22a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHeulandite\" class=\"extiw\" title=\"en:Heulandite\">Heulandite-Ca\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FQuartz\" class=\"extiw\" title=\"en:Quartz\">Quartz\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNashik_district\" class=\"extiw\" title=\"en:Nashik district\">Nasik District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMaharashtra\" class=\"extiw\" title=\"en:Maharashtra\">Maharashtra\u003C\u002Fa>, India (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-30799.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: cabinet, 9.4 x 6.9 x 4.2 cm\n\u003Cdl>\u003Cdt>Heulandite on Chalcedony\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>A visually dramatic piece featuring a 4 cm salmon\u002Fred-colored Heulandite that has great luster and superb gemminess for the species. The color is unusually intense. The large Heulandite rests in a forest of very fine Chalcedony \"straws,\" which helps create the incredible aesthetics of the piece. The several smaller Heulandites add accents to the piece. Truly wonderful specimen with unique aesthetics.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",639,575,{"id":197,"source_url":198,"license_code":199,"credit_html":200,"title":201,"description":202,"author":203,"original_width":204,"original_height":205},11295,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=41292296","CC BY-SA 4.0","Géry PARENT, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=41292296\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Stilbite-(Ca), heulandite-Ca 7100.1873.jpg","stilbite-(Ca), heulandite-Ca : Aurangabad District, Maharashtra, India","Géry PARENT",2006,1368,{"id":207,"source_url":208,"license_code":172,"credit_html":209,"title":210,"description":211,"author":185,"original_width":212,"original_height":213},11290,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10146297","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10146297\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Chabazite-Ca-Heulandite-Ca-153537.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FChabazite\" class=\"extiw\" title=\"en:Chabazite\">Chabazite-Ca\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHeulandite\" class=\"extiw\" title=\"en:Heulandite\">Heulandite-Ca\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Wasson Bluff, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FParrsboro,_Nova_Scotia\" class=\"extiw\" title=\"en:Parrsboro, Nova Scotia\">Parrsboro\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBay_of_Fundy\" class=\"extiw\" title=\"en:Bay of Fundy\">Bay of Fundy\u003C\u002Fa>, Cumberland County, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNova_Scotia\" class=\"extiw\" title=\"en:Nova Scotia\">Nova Scotia\u003C\u002Fa>, Canada (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-4526.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 3.3 x 3.3 x 1.7 cm.\u003C\u002Fdd>\n\u003Cdd>A cluster of extremely sharp chabazite crystals to just over 1 cm, with vivid color the most intense I have seen from here. They are perched on a thin plate of heulandite. This is new material collected recently from this classic old locality that is difficult to access, by my friend Rod Tyson (a semi-retired mineral dealer and well-known Canadian field collector!).\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",800,795,{"id":215,"source_url":216,"license_code":172,"credit_html":217,"title":218,"description":219,"author":185,"original_width":220,"original_height":221},11293,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10453648","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10453648\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Heulandite-Ca-Natroapophyllite-mun05-114c.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHeulandite\" class=\"extiw\" title=\"en:Heulandite\">Heulandite-Ca\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNatroapophyllite\" class=\"extiw\" title=\"en:Natroapophyllite\">Natroapophyllite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNashik_district\" class=\"extiw\" title=\"en:Nashik district\">Nasik District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMaharashtra\" class=\"extiw\" title=\"en:Maharashtra\">Maharashtra\u003C\u002Fa>, India (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-30799.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: cabinet, 11.9 x 9.9 x 4.8 cm\n\u003Cdl>\u003Cdt>Apophyllite with Heulandite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>Zeolites and associated mineral species abound in the thick, basaltic, traprocks of India. But it is still exciting to see well formed minerals in combination from these deposits, and I buy special pieces when something is really unique such as the form and intense color of this apophyllite. In this natural basaltic vug we have a well formed, lustrous, translucent, emerald green fluorapophyllite crystal, 2.5 cm in length, surrounded by lustrous, cream colored heulandite crystals which reach 2 cm in length.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",400,319,{"id":223,"source_url":224,"license_code":172,"credit_html":225,"title":226,"description":227,"author":185,"original_width":228,"original_height":212},5086,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10162866","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10162866\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Chabazite-Ca-Heulandite-Ca-225190.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FChabazite\" class=\"extiw\" title=\"en:Chabazite\">Chabazite-Ca\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHeulandite\" class=\"extiw\" title=\"en:Heulandite\">Heulandite-Ca\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Upper New Street Quarry (Burger's Quarry), \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FPaterson,_New_Jersey\" class=\"extiw\" title=\"en:Paterson, New Jersey\">Paterson\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FPassaic_County,_New_Jersey\" class=\"extiw\" title=\"en:Passaic County, New Jersey\">Passaic County\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNew_Jersey\" class=\"extiw\" title=\"en:New Jersey\">New Jersey\u003C\u002Fa>, USA (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5400.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 4.1 x 3.4 x 2.4 cm.\u003C\u002Fdd>\n\u003Cdd>This is a sharp, attractive miniature of pastel salmon-pink chabazite upon pearlescent heulandite crystals. The chabazites are quite good for the locale, and 1.3 cm in size. Old specimen from the 1940s-1960s eras here, I am told. Ex. Walter E. Kuenstler Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",699,{"id":230,"source_url":231,"license_code":172,"credit_html":232,"title":233,"description":234,"author":185,"original_width":186,"original_height":235},11291,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10165370","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10165370\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Heulandite-Ca-Stilbite-Ca-240232.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHeulandite\" class=\"extiw\" title=\"en:Heulandite\">Heulandite-Ca\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FStilbite\" class=\"extiw\" title=\"en:Stilbite\">Stilbite-Ca\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FJalgaon_District\" class=\"extiw\" title=\"en:Jalgaon District\">Jalgaon District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMaharashtra\" class=\"extiw\" title=\"en:Maharashtra\">Maharashtra\u003C\u002Fa>, India (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-4624.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 11.6 x 7.6 x 2.6 cm.\u003C\u002Fdd>\n\u003Cdd>A most unusual and very aesthetic specimen consisting of what I can only perceive as three generations of Heulandite. The first is a greenish-butterscotch set of intertwined crystals with a good pearly luster. This was followed by those very unusual and appealing Heulandites included with Celadonite, the largest of which is 2 cm. On top of these are numerous .9 cm curved Heulandite crystals that are green or tan and zoned. Flip the specimen over and you will find a number of pearly silvery Stilbite blades. Ex. Charlie Key Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",342,{"id":237,"source_url":238,"license_code":172,"credit_html":239,"title":240,"description":241,"author":185,"original_width":220,"original_height":242},211,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10465500","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10465500\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Chabazite-Ca-Heulandite-Ca-t08-13b.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FChabazite\" class=\"extiw\" title=\"en:Chabazite\">Chabazite-Ca\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHeulandite\" class=\"extiw\" title=\"en:Heulandite\">Heulandite-Ca\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Wasson Bluff, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FParrsboro,_Nova_Scotia\" class=\"extiw\" title=\"en:Parrsboro, Nova Scotia\">Parrsboro\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBay_of_Fundy\" class=\"extiw\" title=\"en:Bay of Fundy\">Bay of Fundy\u003C\u002Fa>, Cumberland County, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNova_Scotia\" class=\"extiw\" title=\"en:Nova Scotia\">Nova Scotia\u003C\u002Fa>, Canada (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-4526.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: miniature, 3.3 x 2.9 x 1.5 cm\n\u003Cdl>\u003Cdt>Chabazite on Heulandite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>A plate of heulandite featuring an extremely sharp chabazite crystal to approx. 2 cm, with vivid color the most intense I have seen from here. This is an extremely aesthetic miniature, competition level for the species. I believe it also shows off a penetration twin. Lastly, you can see the tip of the crystal is almost gemmy, or as close to gemmy as I can say I have ever seen in the species! Hence, this piece is priced at a slight premium compared to even the other high quality chabazites here, for the translucent tip which I find remarkable. This is new material collected recently from this classic old locality that is difficult to access, by my friend Rod Tyson (a semi-retired mineral dealer and well-known Canadian field collector!).\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",347,{"id":244,"source_url":245,"license_code":172,"credit_html":246,"title":247,"description":248,"author":185,"original_width":249,"original_height":220},212,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10476343","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10476343\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Chabazite-Ca-Heulandite-Ca-usa19c.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FChabazite\" class=\"extiw\" title=\"en:Chabazite\">Chabazite-Ca\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHeulandite\" class=\"extiw\" title=\"en:Heulandite\">Heulandite-Ca\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Upper New Street Quarry (Burger's Quarry), \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FPaterson,_New_Jersey\" class=\"extiw\" title=\"en:Paterson, New Jersey\">Paterson\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FPassaic_County,_New_Jersey\" class=\"extiw\" title=\"en:Passaic County, New Jersey\">Passaic County\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNew_Jersey\" class=\"extiw\" title=\"en:New Jersey\">New Jersey\u003C\u002Fa>, USA (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5400.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: miniature, 4.1 x 3.4 x 2.4 cm\n\u003Cdl>\u003Cdt>Chabazite on Heulandite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>This is a sharp, attractive miniature of pastel salmon-pink chabazite upon pearlescent heulandite crystals. The chabazites are quite good for the locale, and 1.3 cm in size. Old specimen from the 1940s-1960s era here, I am told.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",395,{"id":251,"source_url":252,"license_code":172,"credit_html":253,"title":254,"description":255,"author":185,"original_width":256,"original_height":257},963,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=50407937","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=50407937\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Aluminoceladonite-Heulandite-Ca-345165.jpg","Locality: ⓘ Nashik District (Nasik District), Maharashtra, India\n\u003Cp>Dimensions: 14.8 cm x 10.2 cm x 6.5 cm\n\u003C\u002Fp>\nAluminoceladonite-included Heulandite.",465,333,{"id":259,"source_url":260,"license_code":172,"credit_html":261,"title":262,"description":263,"author":185,"original_width":264,"original_height":265},4982,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10431067","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10431067\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Celadonite-Heulandite-Ca-ind37a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCeladonite\" class=\"extiw\" title=\"en:Celadonite\">Celadonite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHeulandite\" class=\"extiw\" title=\"en:Heulandite\">Heulandite-Ca\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAhmednagar_district\" class=\"extiw\" title=\"en:Ahmednagar district\">Ahmadnagar District (Ahmednagar District; Ahmed Nagar District)\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMaharashtra\" class=\"extiw\" title=\"en:Maharashtra\">Maharashtra\u003C\u002Fa>, India (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-11321.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: small cabinet, 7.2 x 4.5 x 4.2 cm\n\u003Cdl>\u003Cdt>Heulandite included by Celadonite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>This elegant, pristine, complete-all-around specimen is the best example I have seen for its size. The quality is superb, featuring a waxy lustre and great curvature and elegance of form all around. It is green throughout except for the very tip of one \"frond\", which is a stark contrasting white.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",700,614,{"id":267,"source_url":268,"license_code":172,"credit_html":269,"title":270,"description":271,"author":185,"original_width":272,"original_height":273},4983,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10442539","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10442539\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Celadonite-Heulandite-Ca-pkn55b.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCeladonite\" class=\"extiw\" title=\"en:Celadonite\">Celadonite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHeulandite\" class=\"extiw\" title=\"en:Heulandite\">Heulandite-Ca\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FJalgaon_District\" class=\"extiw\" title=\"en:Jalgaon District\">Jalgaon District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMaharashtra\" class=\"extiw\" title=\"en:Maharashtra\">Maharashtra\u003C\u002Fa>, India (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-4624.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: cabinet, 10.8 x 9.2 x 7.7 cm\n\u003Cdl>\u003Cdt>Heulandite included by Celadonite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>Rising majestically from whitish-green matrix are a series of large heulandite crystals to 4.5 cm across. These have been heavily invested by celadonite in an unusual dark green color. This is a truly dramatic specimen as most are not associated with good matrix and this one is not only associated, but starkly perched upon a well-trimmed matrix. It is actually elegant, instead of clunky as you would have expected of the material from past experience.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",600,525,{"id":275,"source_url":276,"license_code":172,"credit_html":277,"title":278,"description":279,"author":185,"original_width":272,"original_height":280},4984,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10442546","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10442546\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Celadonite-Heulandite-Ca-pkn60a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCeladonite\" class=\"extiw\" title=\"en:Celadonite\">Celadonite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHeulandite\" class=\"extiw\" title=\"en:Heulandite\">Heulandite-Ca\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FJalgaon_District\" class=\"extiw\" title=\"en:Jalgaon District\">Jalgaon District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMaharashtra\" class=\"extiw\" title=\"en:Maharashtra\">Maharashtra\u003C\u002Fa>, India (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-4624.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: large cabinet, 16 x 14.5 x 7 cm\n\u003Cdl>\u003Cdt>Heulandite included by Celadonite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>A huge bowtie crystal of heulandite to 15 cm across forms the background for smaller crystals, all of which have been turned a deep green by included celadonite. The smaller crystals display a brighter luster although the big crystal does have matte finish luster. For size but also overall appearance, this is one of the best large examples I have seen of these are and now-classic stilbites.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",538,{"id":282,"source_url":283,"license_code":172,"credit_html":284,"title":285,"description":286,"author":185,"original_width":287,"original_height":212},11301,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10449527","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10449527\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Calcite-Heulandite-Ca-Natroapophyllite-ind13a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalcite\" class=\"extiw\" title=\"en:Calcite\">Calcite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHeulandite\" class=\"extiw\" title=\"en:Heulandite\">Heulandite-Ca\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNatroapophyllite\" class=\"extiw\" title=\"en:Natroapophyllite\">Natroapophyllite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FStilbite\" class=\"extiw\" title=\"en:Stilbite\">Stilbite-Ca\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FJalgaon_District\" class=\"extiw\" title=\"en:Jalgaon District\">Jalgaon District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMaharashtra\" class=\"extiw\" title=\"en:Maharashtra\">Maharashtra\u003C\u002Fa>, India (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-4624.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: cabinet, 9.6 x 6.6 x 4.4 cm\n\u003Cdl>\u003Cdt>Heulandite, Stilbite ON Apophyllite ON Calcite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>In the galaxy of the many wonderful Indian pieces that we have, this one certainly shines bright. The core of the piece is a stalactite of clear 2-3 cm Apophyllites, which is lovely in and of itself. To cap it off, the core of the stalactite, on which the apophs perch, is an elongated calcite twin coated with drusy quartz that shows through in some spots (the calcite is visible only at the base, the bottom)! Perched along one side is a classic 7 cm peach-colored Stilbite bowtie, with one side-crystal attached for added drama. On top of the stalactite are two beautiful pink Heulandite fans, the largest of which is 4 cm long. And if all this wasn�t enough, the Heulandites and Stilbites are covered with a druse of sparkling Apophyllite crystals, which make the crystals appear as if they were covered by the pristine snow of Vermont. An absolute killer, MUCH BETTER IN PERSON, and far from the common variety.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",620,{"id":289,"source_url":290,"license_code":172,"credit_html":291,"title":292,"description":286,"author":185,"original_width":293,"original_height":220},11302,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10449528","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10449528\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Calcite-Heulandite-Ca-Natroapophyllite-ind13b.jpg",374,{"id":295,"source_url":296,"license_code":172,"credit_html":297,"title":298,"description":286,"author":185,"original_width":299,"original_height":220},11303,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10449529","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10449529\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Calcite-Heulandite-Ca-Natroapophyllite-ind13c.jpg",372,{"id":301,"source_url":302,"license_code":172,"credit_html":303,"title":304,"description":219,"author":185,"original_width":272,"original_height":305},11304,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10453646","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10453646\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Heulandite-Ca-Natroapophyllite-mun05-114a.jpg",519,{"id":307,"source_url":308,"license_code":172,"credit_html":309,"title":310,"description":219,"author":185,"original_width":220,"original_height":311},11305,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10453647","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10453647\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Heulandite-Ca-Natroapophyllite-mun05-114b.jpg",298,{"id":313,"source_url":314,"license_code":172,"credit_html":315,"title":316,"description":317,"author":185,"original_width":318,"original_height":319},38700,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10159151","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10159151\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Heulandite-Ca-Celadonite-201323.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHeulandite\" class=\"extiw\" title=\"en:Heulandite\">Heulandite-Ca\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCeladonite\" class=\"extiw\" title=\"en:Celadonite\">Celadonite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNashik_district\" class=\"extiw\" title=\"en:Nashik district\">Nasik District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMaharashtra\" class=\"extiw\" title=\"en:Maharashtra\">Maharashtra\u003C\u002Fa>, India (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-30799.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 6.2 x 3.8 x 3.5 cm.\u003C\u002Fdd>\n\u003Cdd>A superb complex bowtie of Huelandite with Caledonite that gives the amazing impression of being quadruple-terminated. 6.2 cm long. Ex. Charlie Key.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",260,499,{"id":321,"source_url":322,"license_code":172,"credit_html":323,"title":324,"description":325,"author":185,"original_width":256,"original_height":326},38703,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10174326","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10174326\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Heulandite-Ca-Celadonite-290222.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHeulandite\" class=\"extiw\" title=\"en:Heulandite\">Heulandite-Ca\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCeladonite\" class=\"extiw\" title=\"en:Celadonite\">Celadonite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNashik_district\" class=\"extiw\" title=\"en:Nashik district\">Nasik District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMaharashtra\" class=\"extiw\" title=\"en:Maharashtra\">Maharashtra\u003C\u002Fa>, India (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-30799.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 12.5 x 8 x 3 cm.\u003C\u002Fdd>\n\u003Cdd>An unusual, and very attractive, plate of multiple-growth Heulandites, accented by Calcites and other accessory minerals. The primary thick layer of Heulandites is the classic deep green (a very pure, lovely green) included by Celadonite, growing in blocky, slightly curved crystals averaging about .3-.4 cm. The lower, thinner layer (about .5 cm thick) is a beautiful brick red Heulandite, likely included with Hematite. The green layer on top is accented with very nice, honey-colored Calcites up to about .4 cm. Extremely aesthetic, this piece is out of the ordinary, and from Charlie Key's noted Indian minerals suite.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",295,{"id":328,"source_url":329,"license_code":172,"credit_html":330,"title":331,"description":325,"author":185,"original_width":256,"original_height":332},38704,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10174329","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10174329\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Heulandite-Ca-Celadonite-290223.jpg",423,{"id":334,"source_url":335,"license_code":172,"credit_html":336,"title":337,"description":325,"author":185,"original_width":256,"original_height":338},38705,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10174331","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10174331\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Heulandite-Ca-Celadonite-290224.jpg",365,{"id":340,"source_url":341,"license_code":172,"credit_html":342,"title":343,"description":263,"author":185,"original_width":344,"original_height":220},38710,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10431068","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10431068\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Celadonite-Heulandite-Ca-ind37b.jpg",337,{"id":346,"source_url":347,"license_code":172,"credit_html":348,"title":349,"description":263,"author":185,"original_width":350,"original_height":220},38711,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10431069","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10431069\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Celadonite-Heulandite-Ca-ind37c.jpg",306,{"id":352,"source_url":353,"license_code":172,"credit_html":354,"title":355,"description":263,"author":185,"original_width":356,"original_height":220},38712,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10431070","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10431070\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Celadonite-Heulandite-Ca-ind37d.jpg",300,{"id":358,"source_url":359,"license_code":172,"credit_html":360,"title":361,"description":271,"author":185,"original_width":220,"original_height":356},38714,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10442540","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10442540\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Celadonite-Heulandite-Ca-pkn55c.jpg",{"id":363,"source_url":364,"license_code":172,"credit_html":365,"title":366,"description":279,"author":185,"original_width":272,"original_height":367},38715,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10442543","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10442543\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Celadonite-Heulandite-Ca-pkn60b.jpg",527,{"id":369,"source_url":370,"license_code":172,"credit_html":371,"title":372,"description":279,"author":185,"original_width":220,"original_height":356},38716,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10442545","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10442545\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Celadonite-Heulandite-Ca-pkn60c.jpg",{"id":374,"source_url":375,"license_code":172,"credit_html":376,"title":377,"description":378,"author":185,"original_width":220,"original_height":356},53597,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10429684","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10429684\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Epistilbite-Heulandite-Ca-Quartz-d05-62c.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEpistilbite\" class=\"extiw\" title=\"en:Epistilbite\">Epistilbite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHeulandite\" class=\"extiw\" title=\"en:Heulandite\">Heulandite-Ca\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FQuartz\" class=\"extiw\" title=\"en:Quartz\">Quartz\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FJalgaon_District\" class=\"extiw\" title=\"en:Jalgaon District\">Jalgaon District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMaharashtra\" class=\"extiw\" title=\"en:Maharashtra\">Maharashtra\u003C\u002Fa>, India (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-4624.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: small cabinet, 8.5 x 7.2 x 4.2 cm\n\u003Cdl>\u003Cdt>Epistilbite with Heulandite in Quartz geode\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>A slamon-pink cluster of incredibly well-formed euhedral epistilbite crystals, showing tru chisel-type terminations, flanked by two splaying wings of heaulandite! I had this trimmed down from a much larger specimen to highlight the unusual combination, and I think the result is quite unique. 8.5 x 7.2 x 4.2 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",{"id":380,"source_url":381,"license_code":172,"credit_html":382,"title":383,"description":384,"author":185,"original_width":212,"original_height":385},57110,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10158425","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10158425\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Goosecreekite-Heulandite-Ca-Quartz-198049.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FSilicate_minerals\" class=\"extiw\" title=\"en:Silicate minerals\">Goosecreekite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHeulandite\" class=\"extiw\" title=\"en:Heulandite\">Heulandite-Ca\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FQuartz\" class=\"extiw\" title=\"en:Quartz\">Quartz\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FJalgaon_District\" class=\"extiw\" title=\"en:Jalgaon District\">Jalgaon District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMaharashtra\" class=\"extiw\" title=\"en:Maharashtra\">Maharashtra\u003C\u002Fa>, India (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-4624.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 13.1 x 8.5 x 8.1 cm.\u003C\u002Fdd>\n\u003Cdd>Nestled in a basaltic vug is a sparkly crystal druse of colorless quartz, upon which was deposited some incredibly bright and sparkly crystal clusters of the rare species Goosecreekite. Atop the Goosecreekite sits two pearlescent, translucent crystals of heulandite, the largest of which measures 4 cm across and is also doubly terminated.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",598,{"id":387,"source_url":388,"license_code":172,"credit_html":389,"title":390,"description":384,"author":185,"original_width":220,"original_height":391},57111,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10158426","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10158426\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Goosecreekite-Heulandite-Ca-Quartz-198050.jpg",304,{"id":393,"source_url":394,"license_code":172,"credit_html":395,"title":396,"description":397,"author":185,"original_width":212,"original_height":385},57116,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10449602","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10449602\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Goosecreekite-Heulandite-Ca-Quartz-indi-41a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FSilicate_minerals\" class=\"extiw\" title=\"en:Silicate minerals\">Goosecreekite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHeulandite\" class=\"extiw\" title=\"en:Heulandite\">Heulandite-Ca\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FQuartz\" class=\"extiw\" title=\"en:Quartz\">Quartz\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FJalgaon_District\" class=\"extiw\" title=\"en:Jalgaon District\">Jalgaon District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMaharashtra\" class=\"extiw\" title=\"en:Maharashtra\">Maharashtra\u003C\u002Fa>, India (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-4624.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: cabinet, 13.1 x 8.5 x 8.1 cm\n\u003Cdl>\u003Cdt>Goosecreekite with Heulandite on Quartz\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>Nestled in a basaltic vug is a sparkly crystal druse of colorless quartz ,upon which was deposited some incredibly bright and sparkly crystal clusters of the rare species Goosecreekite . Atop the Goosecreekite sits two pearlescent, translucent crystals of heulandite, the largest of which measures 4 cm across and is also doubly terminated.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",{"id":399,"source_url":400,"license_code":172,"credit_html":401,"title":402,"description":397,"author":185,"original_width":220,"original_height":391},57117,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10449603","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10449603\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Goosecreekite-Heulandite-Ca-Quartz-indi-41b.jpg",{"id":404,"source_url":405,"license_code":172,"credit_html":406,"title":407,"description":397,"author":185,"original_width":220,"original_height":408},57118,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10449604","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10449604\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Goosecreekite-Heulandite-Ca-Quartz-indi-41c.jpg",354,{"id":410,"source_url":411,"license_code":172,"credit_html":412,"title":413,"description":414,"author":185,"original_width":212,"original_height":415},58402,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10456554","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10456554\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Chabazite-Ca-Heulandite-Ca-pas-61a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FChabazite\" class=\"extiw\" title=\"en:Chabazite\">Chabazite-Ca\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHeulandite\" class=\"extiw\" title=\"en:Heulandite\">Heulandite-Ca\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Jones Falls Quarries, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBaltimore\" class=\"extiw\" title=\"en:Baltimore\">Baltimore\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBaltimore_County,_Maryland\" class=\"extiw\" title=\"en:Baltimore County, Maryland\">Baltimore County\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMaryland\" class=\"extiw\" title=\"en:Maryland\">Maryland\u003C\u002Fa>, USA (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-7247.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: cabinet, 16.6 x 9.2 x 3.7 cm\n\u003Cdl>\u003Cdt>Chabazite var. Haydenite with Heulandite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>A large specimen hosting dozens of sharp chabazite crystals showing a golden, iridescent, almost metallic lustre. Although small, to about 2mm, the crystals really stand out dramatically because of their sharp geometry and riveting color - more so in person, please note. The earliest reference I found to this quarry was Maryland Geologic Survey, Vol. VIII (1898), as listed on MINDAT, which describes the locality as \"A quarry in gneiss located within Baltimore City.\" This matrix shows the layered gneiss on the backside with the layer of zeolite deposition on top, and so the full environment of the pocket is here. The heulandite is present as almost acicular, oddlooking black sprays laying horizontally on the matrix, much of which is coated with a thin layer of siderite or calcite atop (I think). It is easy to see, from the odd habits of both species, why the specimens from this quarry were thought to be new species at the time: \"Haydenite\" is Chabazite; and \"Beaumontite\" is Heulandite, today. Can easily be broken into several study specimens, by the way.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",475,{"id":417,"source_url":418,"license_code":172,"credit_html":419,"title":420,"description":414,"author":185,"original_width":220,"original_height":421},58403,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10456556","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10456556\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Chabazite-Ca-Heulandite-Ca-pas-61b.jpg",335,{"id":423,"source_url":424,"license_code":172,"credit_html":425,"title":426,"description":427,"author":185,"original_width":273,"original_height":272},68575,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10164873","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10164873\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Heulandite-Ca-Mordenite-237630.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHeulandite\" class=\"extiw\" title=\"en:Heulandite\">Heulandite-Ca\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMordenite\" class=\"extiw\" title=\"en:Mordenite\">Mordenite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Rats Nest Claim, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FChallis\" class=\"extiw\" title=\"en:Challis\">Challis\u003C\u002Fa>, Custer County, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FIdaho\" class=\"extiw\" title=\"en:Idaho\">Idaho\u003C\u002Fa>, USA (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-8066.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 10.3 x 8.8 x 5.7 cm.\u003C\u002Fdd>\n\u003Cdd>A beautiful, corsage-like spray of lustrous, peach to white heulandite blades very aesthetically set on a curved, cabinet matrix covered with snow-white mordenite. This beautiful and pristine combination specimen was formerly in the Rice NW Museum Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",[429,435,441,447,453],{"id":430,"url":431,"label":432,"formula":433,"spacegroup":434,"year":165},6174,"\u002Fcif\u002F6174.cif","Comodi 2001","Na.86 K.2 Ca1.325 Ba.015 Sr.435 (Al4.46 Si13.54) O49 H26","C 1 2\u002Fm 1",{"id":436,"url":437,"label":438,"formula":439,"spacegroup":434,"year":440},6178,"\u002Fcif\u002F6178.cif","Gunter 1994","Na.65 Ca1.848 K.06 (Si13.554 Al4.446) O48.38 H12.38",1994,{"id":442,"url":443,"label":444,"formula":445,"spacegroup":434,"year":446},6179,"\u002Fcif\u002F6179.cif","Mortier 1981","Ca.793 (Si6.921 Al2.079) O18",1981,{"id":448,"url":449,"label":450,"formula":451,"spacegroup":452,"year":148},6180,"\u002Fcif\u002F6180.cif","Merkle 1968","Ca1.2 Si13.2 Al4.8 O45.55 H19.1","C 1 m 1",{"id":454,"url":455,"label":456,"formula":457,"spacegroup":452,"year":458},6181,"\u002Fcif\u002F6181.cif","Merkle 1967","Ca (Si4.398 Al1.602) O16.002 H8.004",1967,[460],"Heulandiet-Ca",[462,466,470,474,477],{"lang":463,"names":464},"ca",[465],"heulandita-Ca",{"lang":467,"names":468},"de",[469],"Heulandit-Ca",{"lang":471,"names":472},"eu",[473],"Heulandita-Ca",{"lang":475,"names":476},"it",[7],{"lang":478,"names":479},"zh",[480],"钙片沸石","Q3785391",{"history":483,"applications":487},{"markdown":484,"model_version":485,"prompt_version":486,"reviewed_at":11},"The name on this page honours a dealer, not a discoverer. **Heulandite** remembers John Henry Heuland (1778–1856), a mineral collector and dealer who lived and traded in England[1]. The \"-Ca\" tagged onto it is something else entirely. It is a modern label, added more than a century later, that records which element sits inside the crystal. The two halves of the name come from two very different worlds.\n\nThe mineral itself was first noticed in 1818. The German mineralogist August Breithaupt pulled it apart from stilbite, a look-alike it had been confused with, and called it *euzeolite* — \"beautiful zeolite\"[2]. A zeolite is a mineral built around an open, cage-like framework of silicon, aluminium and oxygen. Water and loose metal atoms sit tucked into the gaps. Breithaupt's name did not stick.\n\nFour years later, the English mineralogist Henry James Brooke reached the same conclusion on his own. In 1822 he named the mineral heulandite, after Heuland[1]. Heuland had an international reputation in his trade, yet no portrait of him is known to survive[1].\n\nFor most of the next two centuries, heulandite was treated as a single mineral species. That changed in 1997. The International Mineralogical Association, the body that decides what counts as a distinct mineral, reclassified heulandite as a *series* rather than one species[3]. The framework is the same throughout, but the loose atoms inside it vary. Whichever element dominates gives the specimen its full name — heulandite-Ca when calcium leads, then heulandite-Na, -K and -Sr for sodium, potassium and strontium[3]. A barium-led member, heulandite-Ba, was added to the list in 2002[3]. The mineral catalogued here, heulandite-Ca, is the calcium-dominant member of that series.","claude-opus-4-8","1.7.0",{"markdown":488,"model_version":485,"prompt_version":486,"reviewed_at":11},"Heulandite-Ca earns its keep mostly on a collector's shelf. Like other zeolites, it has a useful trick. The loose calcium, sodium and potassium atoms inside its open framework swap freely for other dissolved metals passing through. That swapping is called cation exchange. It is what makes the mineral useful in water softeners[1].\n\nThe same property drives the bulk industrial work, but that work rarely falls to heulandite itself. Natural zeolites are cheap, selective and easy to maintain, which suits them to stripping pollutants out of water[2]. They pull ammonium and heavy metals such as lead, cadmium and copper from wastewater[2]. Heulandite is one of the acid-resistant, high-silica zeolites used this way[2]. In farming and animal husbandry, though, the cheaper and more abundant zeolite clinoptilolite does most of the soil-conditioning and cattle-feed work[3].\n\nThe high-value jobs almost all use manufactured zeolites, not mined ones. These are the molecular sieves that sort gases by size, the catalysts that crack petroleum, and the ion-exchange beds in detergents. More than two hundred synthetic zeolites have been reported, made in a uniform, phase-pure state that a natural crystal cannot match[3]. Natural heulandite-Ca is left, for the most part, to collectors and to mineralogists studying the zeolite framework."]