[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:2541":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":25,"impurities":11,"cim":26,"ima_status":27,"ima_notes":11,"ima_history":11,"approval_year":11,"publication_year":29,"discovery_year":30,"strunz10ed1":31,"strunz10ed2":32,"strunz10ed3":33,"strunz10ed4":34,"dana8ed1":35,"dana8ed2":36,"dana8ed3":37,"dana8ed4":38,"csystem":39,"cclass":11,"spacegroup":11,"spacegroupset":40,"a":41,"b":42,"c":43,"alpha":40,"beta":40,"gamma":40,"aerror":11,"berror":11,"cerror":11,"alphaerror":11,"betaerror":11,"gammaerror":11,"va3":11,"z":11,"csmetamict":14,"commentcrystal":44,"twinning":45,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":11,"tlform":11,"hmin":46,"hmax":46,"hardtype":11,"vhnmin":40,"vhnmax":40,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":47,"dmeas2":47,"dcalc":48,"dmeaserror":11,"dcalcerror":11,"commentdense":49,"lustre":50,"lustretype":51,"commentluster":11,"diapheny":52,"streak":53,"colour":54,"commentcolor":11,"colors":55,"streak_colors":60,"luminescence":11,"uv":11,"cleavage":61,"cleavagetype":11,"fracturetype":11,"tenacity":11,"commentbreak":11,"opticaltype":62,"opticalsign":63,"opticalalpha":64,"opticalalpha2":65,"opticalalphaerror":11,"opticalbeta":40,"opticalbeta2":40,"opticalbetaerror":11,"opticalgamma":66,"opticalgamma2":67,"opticalgammaerror":11,"opticalomega":40,"opticalomega2":40,"opticalomegaerror":11,"opticalepsilon":40,"opticalepsilon2":40,"opticalepsilonerror":11,"opticaln":40,"opticaln2":40,"opticalnerror":11,"optical2vcalc":40,"optical2vcalc2":40,"optical2vcalcerror":11,"optical2vmeasured":40,"optical2vmeasured2":40,"optical2vmeasurederror":11,"rimin":68,"rimax":69,"opticaldispersion":70,"opticalpleochroism":71,"opticalpleochorismdesc":72,"opticalbirefringence":11,"opticalcomments":11,"opticalcolour":11,"opticalinternal":11,"opticaltropic":11,"opticalanisotropism":11,"opticalbireflectance":11,"opticalextinction":11,"opticalr":11,"specdispm":11,"ir":11,"electrical":11,"magnetism":11,"thermalbehaviour":11,"other":11,"industrial":11,"occurrence":11,"otheroccurrence":11,"type_specimen_store":11,"description_short":11,"aboutname":73,"rock_parent":11,"rock_parent2":11,"rock_root":9,"rock_bgs_code":11,"meteoritical_code":11,"updttime":74,"reviewed_at":11,"variety_of":11,"varieties":75,"group_members":76,"associates":120,"confused_with":121,"type_localities":122,"occurrence_total":129,"citations":130,"images":149,"structures":241,"synonyms":249,"language_names":257,"wikidata_qid":279,"texts":280},2541,"1:1:2541:2","c4cf1499-d1f9-48ab-bac6-6f0a8e3b6fd8","Columbite-(Mg)","Clb-Mg",0,"mineral",null,41586,73,false,"(Mg,Fe,Mn)(Nb,Ta)\u003Csub>2\u003C\u002Fsub>O\u003Csub>6\u003C\u002Fsub>","MgNb\u003Csub>2\u003C\u002Fsub>O\u003Csub>6\u003C\u002Fsub>",[18,19,20,21,22,23],"Fe","Mg","Mn","Nb","Ta","O",[19,21,23],[21],"18.1.48",[28],"APPROVED",1963,"1963","4","D","B","35","8","3","2","5","Orthorhombic","0","5.65","14.17","5.02","Space group n.d.","Commonly observed",6.5,"5.17","5.23","Measured by suspension","Sub-metallic","Sub-Metallic","Translucent,Opaque","Dark brown","Black to brownish-black",[56,57,58,59],"black","brown","yellow","red",[57],"{010} and {100}","Biaxial","+","2.33","2.36","2.39","2.44",2.33,2.44,"none","Strong","Brownish yellow on X to brownish-red on Z","Originally referred to as magnocolumbite, it was changed to the current form in 2008 (Burke 2008). The name refers to the relationship to the other columbite group species, with dominant magnesium. The columbite group name refers to columbium, an old name for the element niobium.","2025-08-11 12:14:22",[],[77,85,92,100,106,114],{"id":78,"name":79,"entrytype":9,"csystem":39,"ima_formula":80,"mindat_formula":80,"hmin":81,"hmax":81,"dmeas":82,"dcalc":83,"primary_image_id":84},1514,"Columbite-(Fe)","Fe\u003Csup>2+\u003C\u002Fsup>Nb\u003Csub>2\u003C\u002Fsub>O\u003Csub>6\u003C\u002Fsub>",6,"5.2","5.43",6090,{"id":86,"name":87,"entrytype":9,"csystem":39,"ima_formula":88,"mindat_formula":88,"hmin":81,"hmax":81,"dmeas":89,"dcalc":90,"primary_image_id":91},2520,"Columbite-(Mn)","Mn\u003Csup>2+\u003C\u002Fsup>Nb\u003Csub>2\u003C\u002Fsub>O\u003Csub>6\u003C\u002Fsub>","5.20","5.30",6101,{"id":93,"name":94,"entrytype":9,"csystem":39,"ima_formula":95,"mindat_formula":96,"hmin":97,"hmax":97,"dmeas":98,"dcalc":99,"primary_image_id":11},3334,"Qitianlingite","Fe\u003Csup>2+\u003C\u002Fsup>\u003Csub>2\u003C\u002Fsub>Nb\u003Csub>2\u003C\u002Fsub>W\u003Csup>6+\u003C\u002Fsup>O\u003Csub>10\u003C\u002Fsub>","(Fe,Mn)\u003Csub>2\u003C\u002Fsub>(Nb,Ta)\u003Csub>2\u003C\u002Fsub>WO\u003Csub>10\u003C\u002Fsub>",5.5,"6.30","6.423",{"id":101,"name":102,"entrytype":9,"csystem":39,"ima_formula":103,"mindat_formula":103,"hmin":81,"hmax":46,"dmeas":104,"dcalc":40,"primary_image_id":105},1530,"Tantalite-(Fe)","Fe\u003Csup>2+\u003C\u002Fsup>Ta\u003Csub>2\u003C\u002Fsub>O\u003Csub>6\u003C\u002Fsub>","6.65",23584,{"id":107,"name":108,"entrytype":9,"csystem":39,"ima_formula":109,"mindat_formula":110,"hmin":97,"hmax":97,"dmeas":111,"dcalc":112,"primary_image_id":113},11465,"Tantalite-(Mg)","MgTa\u003Csub>2\u003C\u002Fsub>O\u003Csub>6\u003C\u002Fsub>","(Mg,Fe\u003Csup>2+\u003C\u002Fsup>)(Ta,Nb)\u003Csub>2\u003C\u002Fsub>O\u003Csub>6\u003C\u002Fsub>","6.7","6.79",23580,{"id":115,"name":116,"entrytype":9,"csystem":39,"ima_formula":117,"mindat_formula":117,"hmin":81,"hmax":81,"dmeas":104,"dcalc":118,"primary_image_id":119},2522,"Tantalite-(Mn)","Mn\u003Csup>2+\u003C\u002Fsup>Ta\u003Csub>2\u003C\u002Fsub>O\u003Csub>6\u003C\u002Fsub>","8.01",81904,[],[],[123],{"id":124,"txt":125,"latitude":126,"longitude":127,"country":128},4391,"Muzeinaya pegmatite vein (Muzeinyi pegmatite), Kukh-i-Lal (Kukhilal; Kuhi-lal), Ishkoshim, Gorno-Badakhshan, Tajikistan",37.1789882,71.4780379,"Tajikistan",8,[131,134,137,141,145],{"id":132,"year":29,"html":133,"doi":11},523958,"Fleischer, M. (1963) New mineral Names. \u003Ci>American Mineralogist\u003C\u002Fi>,  48 (9-10) 1178-1184 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM48\u002FAM48_1178.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":135,"year":29,"html":136,"doi":11},16116141,"Mathias, V.V., Rossovskii, L.N., Shostatskii, A.N., Kumskova, N.M. (1963) Magnocolumbite, a new mineral. Doklady Akademii Nauk SSSR: 148: 420-423.",{"id":138,"year":139,"html":140,"doi":11},16116142,1969,"Mineralogical Abstracts (1969): 69: 582.",{"id":142,"year":143,"html":144,"doi":11},16965754,2005,"(2005) Columbite-(Mg). \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fmagnocolumbite.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":146,"year":147,"html":148,"doi":11},12909745,2008,"Burke, Ernst A. J. (2008) Tidying up mineral names: an IMA-CNMNC scheme for suffixes, hyphens and diacritical marks. \u003Ci>The Mineralogical Record\u003C\u002Fi>,  39 (2) 131-135 \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fuploads\u002FMR39_131.pdf' class='refpdflink'>\u003C\u002Fa>",[150,160,167,175,182,189,196,204,211,218,226,233],{"id":151,"source_url":152,"license_code":153,"credit_html":154,"title":155,"description":156,"author":157,"original_width":158,"original_height":159},6097,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10137330","CC BY-SA 3.0","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10137330\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Columbite-69387.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FColumbite\" class=\"extiw\" title=\"en:Columbite\">Columbite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGalil%C3%A9ia\" class=\"extiw\" title=\"en:Galiléia\">Galiléia\u003C\u002Fa>, Doce valley, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMinas_Gerais\" class=\"extiw\" title=\"en:Minas Gerais\">Minas Gerais\u003C\u002Fa>, Southeast Region, Brazil (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5429.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>WOW! This is an unusual pseudocubic crystal of columbite with edges to 3.3 cm long. The crystal is deep black in color, with a nice luster but with slight pitting on the faces. One side of the crystal is contacted. Very large example of the classic Brazilian coloumbites. A couple of collection labels come with piece. 3.4 x 3.3 x 3.1 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Robert M. Lavinsky",800,770,{"id":161,"source_url":162,"license_code":153,"credit_html":163,"title":164,"description":165,"author":157,"original_width":166,"original_height":158},6087,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10137937","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10137937\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Columbite-75444.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FColumbite\" class=\"extiw\" title=\"en:Columbite\">Columbite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMiddletown\" class=\"extiw\" title=\"en:Middletown\">Middletown\u003C\u002Fa>, Middlesex County, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FConnecticut\" class=\"extiw\" title=\"en:Connecticut\">Connecticut\u003C\u002Fa>, USA (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-17878.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>A 3.5 cm crystal of columbite aesthetically perched on a miniature-size pegmatite matrix of muscovite & albite. John Caswell (catalog #1511) acquired this historic specimen from the Newberry collection in 1878; more recently, this specimen was acquired by me in 2001 from Steve Chamberlain, who received it from Ron Bentley in 1980. 5.7 x 4.7 x 3.8 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",695,{"id":168,"source_url":169,"license_code":153,"credit_html":170,"title":171,"description":172,"author":157,"original_width":173,"original_height":174},6098,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10154292","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10154292\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Columbite-186423.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FColumbite\" class=\"extiw\" title=\"en:Columbite\">Columbite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FIveland\" class=\"extiw\" title=\"en:Iveland\">Iveland\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAust-Agder\" class=\"extiw\" title=\"en:Aust-Agder\">Aust-Agder\u003C\u002Fa>, Norway (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-32512.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 2.1 x 1.5 x 1.2 cm.\u003C\u002Fdd>\n\u003Cdd>Lustrous, sharp and sharply terminated, dark brownish-gray columbite crystals form an excellent and showy thumbnail cluster from the famous Iveland pegmatites of Norway. Ex. Dick Jones Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",308,400,{"id":176,"source_url":177,"license_code":153,"credit_html":178,"title":179,"description":180,"author":157,"original_width":181,"original_height":158},50185,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10126111","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10126111\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Columbite-37837.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FColumbite\" class=\"extiw\" title=\"en:Columbite\">Columbite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Middlesex County, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FConnecticut\" class=\"extiw\" title=\"en:Connecticut\">Connecticut\u003C\u002Fa>, USA (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-15902.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>This single tabular crystal shows the desirable form and luster hoped for from one of the classic localities in the Eastern US. A very fine locality specimen! 1.9 x 1.2 x .8 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",566,{"id":183,"source_url":184,"license_code":153,"credit_html":185,"title":186,"description":187,"author":157,"original_width":158,"original_height":188},50186,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10137933","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10137933\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Columbite-75441.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FColumbite\" class=\"extiw\" title=\"en:Columbite\">Columbite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Andrews Quarry, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FPortland\" class=\"extiw\" title=\"en:Portland\">Portland\u003C\u002Fa>, Middlesex County, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FConnecticut\" class=\"extiw\" title=\"en:Connecticut\">Connecticut\u003C\u002Fa>, USA (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-23306.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>A sharp and lustrous 4 x 4.5 x 3 cm fan-shaped radial sheaf of wide tabular columbite crystals, with minor muscovite and albite. Unusual crystal from a fine historic locale! Ex Wesleyan University and Richard Schooner collections. 4.3 x 4.0 x 3.2 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",759,{"id":190,"source_url":191,"license_code":153,"credit_html":192,"title":193,"description":194,"author":157,"original_width":195,"original_height":158},50187,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10137936","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10137936\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Columbite-75443.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FColumbite\" class=\"extiw\" title=\"en:Columbite\">Columbite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: White Rock quarries, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMiddletown\" class=\"extiw\" title=\"en:Middletown\">Middletown\u003C\u002Fa>, Middlesex County, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FConnecticut\" class=\"extiw\" title=\"en:Connecticut\">Connecticut\u003C\u002Fa>, USA (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-6784.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>The quality in this piece is phenomnenal! It features a sharp 1 cm mirror-bright lustrous columbite crystal perched on a miniature-sized pegmatite matrix of smoky quartz and muscovite. This is a historic specimen from the John I. Legro collection (catalog #1095), illustrated in a Socvil photo in Pough’s Field Guide to Rocks & Minerals, 5th edition (Plate 26; 1996) and Rocks & Minerals “Connecticut” issue (p. 402, Figure 16; 70:6,1995). 4.6 x 4.2 x 3.1 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",656,{"id":197,"source_url":198,"license_code":153,"credit_html":199,"title":200,"description":201,"author":157,"original_width":202,"original_height":203},21482,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10170196","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10170196\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Samarskite-(Y)-Columbite-266268.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FSamarskite\" class=\"extiw\" title=\"en:Samarskite\">Samarskite-(Y)\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FColumbite\" class=\"extiw\" title=\"en:Columbite\">Columbite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FDivin%C3%A9sia\" class=\"extiw\" title=\"en:Divinésia\">Divinésia (ex-Divino de Ubá)\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMinas_Gerais\" class=\"extiw\" title=\"en:Minas Gerais\">Minas Gerais\u003C\u002Fa>, Southeast Region, Brazil (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-398.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 3.4 x 1.4 x 1.2 cm.\u003C\u002Fdd>\n\u003Cdd>Samarskite is an uncommon rare-earth oxide found in pegmatites. This is an excellent and very fine combination specimen from the much less well-known Divino de Uba pegmatite of Brazil. A sharp tan, orthorhombic, parallel-growth samarskite crystal hosts parallel slivers of lustrous, metallic columbite crystals. The samarskite crystal is pristine. Ex, Don Boydston Collection and accompanied by a 1950s-1960s-era Burminco label. A rare and seldom available combination piece from this less common locale.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",310,600,{"id":205,"source_url":206,"license_code":153,"credit_html":207,"title":208,"description":209,"author":157,"original_width":203,"original_height":210},23588,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10170670","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10170670\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Columbite-270208.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FColumbite\" class=\"extiw\" title=\"en:Columbite\">Columbite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNewry\" class=\"extiw\" title=\"en:Newry\">Newry\u003C\u002Fa>, Oxford County, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMaine\" class=\"extiw\" title=\"en:Maine\">Maine\u003C\u002Fa>, USA (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-192467.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 9.4 x 7.0 x 5.0 cm.\u003C\u002Fdd>\n\u003Cdd>A large, 5.4 x 4.2 cm, lustrous, platy, battleship-gray columbite crystal is embedded in albite and smoky quartz matrix on this fine and classic, old-time specimen from the pegmatites at Newry, Maine. This is a very large crystal for the species from this historic locale. Excellent combination material. Ex. Mullane Collection and accompanied by an older, faded paper label.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",470,{"id":212,"source_url":213,"license_code":153,"credit_html":214,"title":215,"description":216,"author":157,"original_width":217,"original_height":203},6088,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10175034","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10175034\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Columbite-(Fe)-27449.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FColumbite\" class=\"extiw\" title=\"en:Columbite\">Columbite-(Fe)\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Tsaramanga (Tongafeni; Itongafeno) pegmatite, Mahaiza Commune, Betafo District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FVakinankaratra\" class=\"extiw\" title=\"en:Vakinankaratra\">Vakinankaratra Region\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntananarivo_Province\" class=\"extiw\" title=\"en:Antananarivo Province\">Antananarivo Province\u003C\u002Fa>, Madagascar (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-27803.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>VERY sharp crystals of columbite-(Fe). The sharp crystals have a tapered habit. 6.3 x 3.4 x 2.8 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",368,{"id":219,"source_url":220,"license_code":153,"credit_html":221,"title":222,"description":223,"author":157,"original_width":224,"original_height":225},6089,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10176400","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10176400\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Columbite-(Fe)-182970.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FColumbite\" class=\"extiw\" title=\"en:Columbite\">Columbite-(Fe)\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMinas_Gerais\" class=\"extiw\" title=\"en:Minas Gerais\">Minas Gerais\u003C\u002Fa>, Southeast Region, Brazil (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-387.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 5.5 x 4.9 x 3.9 cm.\u003C\u002Fdd>\n\u003Cdd>A large, complete all-around cluster of two, lustrous, blocky, black, parallel-growth ferrocolumbite crystals from an unknown locality in Minas Gerais, Brazil. Ex. Charles Hansen Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",433,450,{"id":227,"source_url":228,"license_code":153,"credit_html":229,"title":230,"description":231,"author":157,"original_width":203,"original_height":232},6099,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10175036","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10175036\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Rhodizite-Columbite-(Mn)-27527.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBorate_mineral\" class=\"extiw\" title=\"en:Borate mineral\">Rhodizite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FColumbite\" class=\"extiw\" title=\"en:Columbite\">Columbite-(Mn)\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Sahatany Pegmatite Field (Mt Bity (Ibity) area), Manandona Valley, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FVakinankaratra\" class=\"extiw\" title=\"en:Vakinankaratra\">Vakinankaratra Region\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntananarivo_Province\" class=\"extiw\" title=\"en:Antananarivo Province\">Antananarivo Province\u003C\u002Fa>, Madagascar (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-2260.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Fine rhodizite specimens with rich color, excellent lustre, and sharpness of the crystal (which is 1.3 cm in height). 3.7 x 3.5 x 2.5 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",465,{"id":234,"source_url":235,"license_code":153,"credit_html":236,"title":237,"description":238,"author":157,"original_width":239,"original_height":240},23587,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10148007","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10148007\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Columbite-162793.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FColumbite\" class=\"extiw\" title=\"en:Columbite\">Columbite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Hewitt Gem Quarry (Herb's Gem Quarry; Sawmill Quarry), \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHaddam\" class=\"extiw\" title=\"en:Haddam\">Haddam\u003C\u002Fa>, Middlesex County, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FConnecticut\" class=\"extiw\" title=\"en:Connecticut\">Connecticut\u003C\u002Fa>, USA (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-23091.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 1.7 x 1.2 x 1.0 cm.\u003C\u002Fdd>\n\u003Cdd>A pristine, complete all-around, very sharp and lustrous, blocky, black columbite crystal from Hewitt Mine, Haddam, Connecticut. Columbite is RARE from this locality, which is nicely accented by a bit of quartz hidden in the notch. This is CLASSIC, OLD-TIME Haddam material. Ex. Jarnot Collection, Connecticut specialists.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",313,391,[242],{"id":243,"url":244,"label":245,"formula":246,"spacegroup":247,"year":248},3098,"\u002Fcif\u002F3098.cif","Pagola 1997","Mg Nb2 O6","P b c n",1997,[250,251,252,253,254,255,256],"Columbiet-(Mg)","Magnesiocolumbit","Magnesiocolumbita","Magnesiocolumbite","Magnocolumbit","Magnocolumbita","Magnocolumbite",[258,263,267,271,275],{"lang":259,"names":260},"ca",[261,262],"Columbita-","columbita-(Mg)",{"lang":264,"names":265},"de",[266],"Columbit-(Mg)",{"lang":268,"names":269},"eu",[261,270],"Columbita-(Mg)",{"lang":272,"names":273},"it",[274,7,253],"Columbite-",{"lang":276,"names":277},"zh",[278],"铌镁矿","Q3683806",{"history":11,"applications":11}]