[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:6703":3},{"id":4,"longid":5,"guid":6,"name":7,"shortcode_ima":8,"entrytype":9,"entrytype_text":10,"varietyof":11,"synid":8,"polytypeof":8,"groupid":8,"weighting":12,"nolocadd":13,"blacklisted":13,"mindat_formula":14,"mindat_formula_note":8,"ima_formula":8,"elements":15,"sigelements":18,"key_elements":8,"impurities":8,"cim":8,"ima_status":8,"ima_notes":8,"ima_history":8,"approval_year":8,"publication_year":8,"discovery_year":8,"strunz10ed1":19,"strunz10ed2":19,"strunz10ed3":19,"strunz10ed4":8,"dana8ed1":19,"dana8ed2":19,"dana8ed3":19,"dana8ed4":19,"csystem":8,"cclass":8,"spacegroup":8,"spacegroupset":19,"a":8,"b":8,"c":8,"alpha":8,"beta":8,"gamma":8,"aerror":8,"berror":8,"cerror":8,"alphaerror":8,"betaerror":8,"gammaerror":8,"va3":8,"z":8,"csmetamict":13,"commentcrystal":8,"twinning":8,"tranglide":8,"parting":8,"epitaxidescription":8,"morphology":8,"tlform":8,"hmin":8,"hmax":8,"hardtype":8,"vhnmin":19,"vhnmax":19,"vhnerror":8,"vhng":8,"vhns":8,"commenthard":8,"dmeas":19,"dmeas2":19,"dcalc":19,"dmeaserror":8,"dcalcerror":8,"commentdense":8,"lustre":8,"lustretype":8,"commentluster":8,"diapheny":8,"streak":8,"colour":8,"commentcolor":8,"colors":8,"streak_colors":8,"luminescence":8,"uv":8,"cleavage":8,"cleavagetype":8,"fracturetype":8,"tenacity":8,"commentbreak":8,"opticaltype":8,"opticalsign":8,"opticalalpha":8,"opticalalpha2":19,"opticalalphaerror":8,"opticalbeta":8,"opticalbeta2":19,"opticalbetaerror":8,"opticalgamma":8,"opticalgamma2":19,"opticalgammaerror":8,"opticalomega":8,"opticalomega2":19,"opticalomegaerror":8,"opticalepsilon":8,"opticalepsilon2":19,"opticalepsilonerror":8,"opticaln":8,"opticaln2":8,"opticalnerror":8,"optical2vcalc":8,"optical2vcalc2":8,"optical2vcalcerror":8,"optical2vmeasured":8,"optical2vmeasured2":8,"optical2vmeasurederror":8,"rimin":8,"rimax":8,"opticaldispersion":8,"opticalpleochroism":8,"opticalpleochorismdesc":8,"opticalbirefringence":8,"opticalcomments":8,"opticalcolour":8,"opticalinternal":8,"opticaltropic":8,"opticalanisotropism":8,"opticalbireflectance":8,"opticalextinction":8,"opticalr":8,"specdispm":8,"ir":8,"electrical":8,"magnetism":8,"thermalbehaviour":8,"other":8,"industrial":8,"occurrence":8,"otheroccurrence":8,"type_specimen_store":8,"description_short":8,"aboutname":20,"rock_parent":8,"rock_parent2":8,"rock_root":21,"rock_bgs_code":8,"meteoritical_code":8,"updttime":22,"reviewed_at":8,"variety_of":23,"varieties":31,"group_members":32,"associates":33,"confused_with":34,"type_localities":35,"occurrence_total":36,"citations":37,"images":70,"structures":130,"synonyms":131,"language_names":136,"wikidata_qid":8,"texts":137},6703,"1:1:6703:0","2e948d3c-e8b4-41a2-aa5f-28acc8d01e7d","Prase",null,2,"variety",3337,3646,false,"SiO\u003Csub>2\u003C\u002Fsub>",[16,17],"Si","O",[16,17],"0","From the Greek praso = leek.",0,"2025-08-11 12:14:27",{"id":11,"name":24,"entrytype":21,"csystem":25,"ima_formula":14,"mindat_formula":14,"hmin":26,"hmax":26,"dmeas":27,"dcalc":28,"strunz10ed1":29,"primary_image_id":30},"Quartz","Trigonal",7,"2.65","2.66","4",30579,[],[],[],[],[],48,[38,41,44,48,52,56,60,65],{"id":39,"year":8,"html":40,"doi":8},16130095,"\"Manual of Mineralogy after J. D. Dana\", by Klein, Cornelis, and Hurlbut, Jr., Cornelius, 20th Edition, 1985, John Wiley & Sons, publisher, New York, Chichester, Brisbane, Toronot, Singapore:  pg. 442.",{"id":42,"year":8,"html":43,"doi":8},16130096,"\"Standard Catalog of Gem Values,\" 2nd Edition, by Miller, Anna and Sinkankas, John, Geoscience Press, Tucson, Arizona, USA, pg. 85.",{"id":45,"year":46,"html":47,"doi":8},16130093,1900,"Gürich, G. (1900): Das Mineralreich. [\"Prasem ist z.B. ein Quarz, der durch überaus dicht eingestreute kleine Hornblendenädelchen völlig grün erscheint. Glasglanz und muschliger Bruch lassen ihn von dem lauchgrünen Plasma, dem Chrysopal, dem apfelgrünen Chrysopras, und der Glanz von dem grünen Jaspis unterscheiden; ... Der bekannteste Fundort für Prasem ist Breitenbrunn.\"]",{"id":49,"year":50,"html":51,"doi":8},16130094,1912,"Klockmann, F. (1912): Lehrbuch der Mineralogie. [\"Prasem, in XX oder derb, lauchgrün, weil innig mit Strahlstein durchzogen. Breitenbrunn in Sachsen.\"]",{"id":53,"year":54,"html":55,"doi":8},1118652,1951,"Palache, Charles; Berman, Harry; Frondel, Clifford (1951) \u003Ci>The System of Mineralogy\u003C\u002Fi> (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons.",{"id":57,"year":58,"html":59,"doi":8},526873,1977,"Nassau, Kurt, Prescott, Betty E. (1977) A unique green quartz. \u003Ci>American Mineralogist\u003C\u002Fi>,  62 (5-6) 589-590 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM62\u002FAM62_589.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":61,"year":62,"html":63,"doi":64},531002,1982,"Paradise, Thomas R. (1982) The Natural Formation and Occurrence of Green Quartz. \u003Ci>Gems & Gemology\u003C\u002Fi>,  18 (1) 39-42 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.5741\u002Fgems.18.1.39'>doi:10.5741\u002Fgems.18.1.39\u003C\u002Fa>","10.5741\u002Fgems.18.1.39",{"id":66,"year":67,"html":68,"doi":69},7734914,2018,"Klemme, Stephan, Berndt, Jasper, Mavrogonatos, Constantinos, Flemetakis, Stamatis, Baziotis, Ioannis, Voudouris, Panagiotis, Xydous, Stamatios (2018) On the color and genesis of prase (green quartz) and amethyst from the Island of Serifos, Cyclades, Greece. \u003Ci>Minerals\u003C\u002Fi>,  8 (11) 487 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.3390\u002Fmin8110487'>doi:10.3390\u002Fmin8110487\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Fwww.mdpi.com\u002F2075-163X\u002F8\u002F11\u002F487\u002Fpdf?version=1540536930' class='refpdflink'>\u003C\u002Fa>","10.3390\u002Fmin8110487",[71,81,87,91,101,110,120],{"id":72,"source_url":73,"license_code":74,"credit_html":75,"title":76,"description":77,"author":78,"original_width":79,"original_height":80},75241,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=167124154","CC BY 4.0","Animalculum, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=167124154\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Prase quartz, Musee de Mineralogie, Paris, 2025.jpg","Prase quartz from Serifos, Greece in Musee de Mineralogie, Paris","Animalculum",2048,3641,{"id":82,"source_url":83,"license_code":74,"credit_html":84,"title":24,"description":8,"author":8,"original_width":85,"original_height":86},89087,"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F113191","Photo: Unknown author — http:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby\u002F4.0\u002F, courtesy of \u003Ca href=\"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F113191\" rel=\"noopener\">Department of Geology, TalTech\u003C\u002Fa> via Europeana",1000,666,{"id":88,"source_url":89,"license_code":74,"credit_html":90,"title":24,"description":8,"author":8,"original_width":85,"original_height":86},89088,"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F115000","Photo: Unknown author — http:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby\u002F4.0\u002F, courtesy of \u003Ca href=\"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F115000\" rel=\"noopener\">Department of Geology, TalTech\u003C\u002Fa> via Europeana",{"id":92,"source_url":93,"license_code":94,"credit_html":95,"title":96,"description":97,"author":98,"original_width":99,"original_height":100},58451,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=17789930","CC BY-SA 3.0","Parent Géry, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=17789930\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Quartz prase - hedenbergite - et chlorite (Ganesh Himal, Katmandu - Népal) 1.jpg","crystals of quartz var. prase : Ganesh Himal (Ganesha), Dhading District, Bagmati Zone, Nepal - 63 mm","Parent Géry",2687,3916,{"id":102,"source_url":103,"license_code":74,"credit_html":104,"title":105,"description":106,"author":107,"original_width":108,"original_height":109},60645,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=80999374","Dguendel, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=80999374\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Freiberg, Terra mineralia, Prasem mit Ilvait.JPG","Freiberg, Terra mineralia, prase with ilvaite,   location: Dalnegorsk, Siberia","Dguendel",2689,2256,{"id":111,"source_url":112,"license_code":113,"credit_html":114,"title":115,"description":116,"author":117,"original_width":118,"original_height":119},75243,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=66225212","CC BY-SA 2.0","Aisha Brown, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=66225212\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Prase opal.jpg","Prase opals.","Aisha Brown",640,528,{"id":121,"source_url":122,"license_code":123,"credit_html":124,"title":125,"description":126,"author":127,"original_width":128,"original_height":129},75244,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=84500528","CC BY 2.0","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=84500528\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Prase opal (Baumgarten, Silesia, Poland) (29820660672).jpg","\u003Cp>Prase opal from Poland. (public display, Field Museum of Natural History, Chicago, Illinois, USA)\n\u003C\u002Fp>\u003Cp>A mineral is a naturally-occurring, solid, inorganic, crystalline substance having a fairly definite chemical composition and having fairly definite physical properties.  At its simplest, a mineral is a naturally-occurring solid chemical.  Currently, there are over 5100 named and described minerals - about 200 of them are common and about 20 of them are very common.  Mineral classification is based on anion chemistry.  Major categories of minerals are: elements, sulfides, oxides, halides, carbonates, sulfates, phosphates, and silicates.\n\u003C\u002Fp>\u003Cp>The silicates are the most abundant and chemically complex group of minerals.  All silicates have silica as the basis for their chemistry.  \"Silica\" refers to SiO2 chemistry.  The fundamental molecular unit of silica is one small silicon atom surrounded by four large oxygen atoms in the shape of a triangular pyramid - this is the silica tetrahedron - SiO4.  Each oxygen atom is shared by two silicon atoms, so only half of the four oxygens \"belong\" to each silicon.  The resulting formula for silica is thus SiO2, not SiO4.\n\u003C\u002Fp>\u003Cp>Opal is hydrous silica (SiO2·nH2O).  Technically, opal is not a mineral because it lacks a crystalline structure.  Opal is supposed to be called a mineraloid.  Opal is made up of extremely tiny spheres (colloids - <a href=\"\u003Ca rel=\"nofollow\" class=\"external free\" href=\"https:\u002F\u002Fwww.uwgb.edu\u002Fdutchs\u002Facstalks\u002Facscolor\u002FOPALSPHR.jpg\">https:\u002F\u002Fwww.uwgb.edu\u002Fdutchs\u002Facstalks\u002Facscolor\u002FOPALSPHR.jpg\u003C\u002Fa>\" rel=\"nofollow\">www.uwgb.edu\u002Fdutchs\u002Facstalks\u002Facscolor\u002FOPALSPHR.jpg<\u002Fa>) that can be seen with a scanning electron microscope (SEM).\n\u003C\u002Fp>\u003Cp>Gem-quality opal, or precious opal, has a wonderful rainbow play of colors (opalescence).  This play of color is the result of light being diffracted by planes of voids between large areas of regularly packed, same-sized opal colloids.  Different opalescent colors are produced by colloids of differing sizes.  If individual colloids are larger than 140 x 10-6 mm in size, purple & blue & green colors are produced.  Once colloids get as large as about 240 x 10-6 mm, red color is seen (Carr et al., 1979).\n\u003C\u002Fp>\u003Cp>Not all opals have the famous play of colors, however.  Common opal has a wax-like luster & is often milky whitish with no visible color play at all.  Opal is moderately hard (H = 5 to 6), has a white streak, and has conchoidal fracture.\n\u003C\u002Fp>\u003Cp>Several groups of organisms make skeletons of opaline silica, for example hexactinellid sponges, diatoms, radiolarians, silicoflagellates, and ebridians.  Some organisms incorporate opal into their tissues, for example horsetails\u002Fscouring rushes and sawgrass.  Sometimes, fossils are preserved in opal or precious opal.\n\u003C\u002Fp>\u003Cp>\"Prase opal\" is a scarce variety of greenish-colored common opal.  The coloring agents are attributed to nickel (Ni) and chromium (Cr).\n\u003C\u002Fp>\u003Cp>Locality: unrecorded site at or near Baumgarten (a.k.a. Braszowice), Silesia, southwestern Poland\n\u003C\u002Fp>\n\u003Chr>\n\u003Cp>Photo gallery of opal:\n<a href=\"\u003Ca rel=\"nofollow\" class=\"external free\" href=\"http:\u002F\u002Fwww.mindat.org\u002Fgallery.php?min=3004\">http:\u002F\u002Fwww.mindat.org\u002Fgallery.php?min=3004\u003C\u002Fa>\" rel=\"nofollow\">www.mindat.org\u002Fgallery.php?min=3004<\u002Fa>\n\u003C\u002Fp>\n\u003Chr>\n\u003Cp>Reference cited:\n\u003C\u002Fp>\nCarr et al. (1979) - Andamooka opal fields: the geology of the precious stones field and the results of the subsidised mining program.  Geological Survey of South Australia Department of Mines and Energy Report of Investigations 51.  68 pp.","James St. John",2061,1291,[],[132,133,134,135],"Edinite","Prasem","Prasio","Prasius",[],{"history":8,"applications":8}]