[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:1758":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":16,"ima_formula":17,"elements":18,"sigelements":23,"key_elements":11,"impurities":11,"cim":24,"ima_status":25,"ima_notes":11,"ima_history":11,"approval_year":11,"publication_year":28,"discovery_year":11,"strunz10ed1":29,"strunz10ed2":30,"strunz10ed3":31,"strunz10ed4":32,"dana8ed1":33,"dana8ed2":33,"dana8ed3":33,"dana8ed4":33,"csystem":34,"cclass":35,"spacegroup":36,"spacegroupset":37,"a":38,"b":39,"c":40,"alpha":33,"beta":41,"gamma":33,"aerror":42,"berror":43,"cerror":44,"alphaerror":11,"betaerror":44,"gammaerror":11,"va3":11,"z":43,"csmetamict":14,"commentcrystal":11,"twinning":45,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":46,"tlform":11,"hmin":35,"hmax":47,"hardtype":11,"vhnmin":33,"vhnmax":33,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":48,"dmeas2":49,"dcalc":50,"dmeaserror":11,"dcalcerror":11,"commentdense":11,"lustre":51,"lustretype":51,"commentluster":52,"diapheny":53,"streak":54,"colour":55,"commentcolor":56,"colors":57,"streak_colors":11,"luminescence":62,"uv":11,"cleavage":63,"cleavagetype":11,"fracturetype":11,"tenacity":64,"commentbreak":11,"opticaltype":65,"opticalsign":66,"opticalalpha":67,"opticalalpha2":68,"opticalalphaerror":11,"opticalbeta":69,"opticalbeta2":70,"opticalbetaerror":11,"opticalgamma":71,"opticalgamma2":72,"opticalgammaerror":11,"opticalomega":33,"opticalomega2":33,"opticalomegaerror":11,"opticalepsilon":33,"opticalepsilon2":33,"opticalepsilonerror":11,"opticaln":33,"opticaln2":33,"opticalnerror":11,"optical2vcalc":73,"optical2vcalc2":74,"optical2vcalcerror":11,"optical2vmeasured":75,"optical2vmeasured2":76,"optical2vmeasurederror":11,"rimin":77,"rimax":78,"opticaldispersion":79,"opticalpleochroism":80,"opticalpleochorismdesc":81,"opticalbirefringence":11,"opticalcomments":11,"opticalcolour":11,"opticalinternal":11,"opticaltropic":11,"opticalanisotropism":11,"opticalbireflectance":11,"opticalextinction":82,"opticalr":11,"specdispm":11,"ir":11,"electrical":11,"magnetism":11,"thermalbehaviour":11,"other":11,"industrial":11,"occurrence":11,"otheroccurrence":83,"type_specimen_store":84,"description_short":85,"aboutname":86,"rock_parent":11,"rock_parent2":11,"rock_root":9,"rock_bgs_code":11,"meteoritical_code":11,"updttime":87,"reviewed_at":11,"variety_of":11,"varieties":88,"group_members":94,"associates":103,"confused_with":111,"type_localities":123,"occurrence_total":130,"citations":131,"images":213,"structures":251,"synonyms":258,"language_names":259,"wikidata_qid":366,"texts":367},1758,"1:1:1758:5","c68ea177-d9e5-4638-8cce-11aff6b2d969","Grunerite","Gru",0,"mineral",null,43524,781,false,"◻Fe\u003Csup>2+\u003C\u002Fsup>\u003Csub>2\u003C\u002Fsub>Fe\u003Csup>2+\u003C\u002Fsup>\u003Csub>5\u003C\u002Fsub>(Si\u003Csub>8\u003C\u002Fsub>O\u003Csub>22\u003C\u002Fsub>)(OH)\u003Csub>2\u003C\u002Fsub>","Grunerite is defined as a monoclinic amphibole belong to the magnesium-iron-manganese amphibole subgroup. \r\n\r\nIt is defined with Fe\u003Csup>2+\u003C\u002Fsup> as the dominant element both in the B and C positions.","◻Fe\u003Csup>2+\u003C\u002Fsup>\u003Csub>2\u003C\u002Fsub>Fe\u003Csup>2+\u003C\u002Fsup>\u003Csub>5\u003C\u002Fsub>Si\u003Csub>8\u003C\u002Fsub>O\u003Csub>22\u003C\u002Fsub>(OH)\u003Csub>2\u003C\u002Fsub>",[19,20,21,22],"Fe","Si","O","H",[19,20,21,22],"14.21.8",[26,27],"APPROVED","GRANDFATHERED",1847,"9","D","E","05","0","Monoclinic",5,11,"C2\u002Fm ","9.5642","18.393","5.3388","101.892",7,2,3,"Simple or multiple twinning common ∥ {100}, producing narrow twin lamellae.","Acicular or fibrous radiating crystals; asbestiform.",6,"3.40","3.60","3.531","Vitreous","Silky when fibrous","Translucent","nd","Dark green to brown, gray to greenish gray","Colorless to pale green or brown in thin section.",[58,59,60,61],"green","brown","gray","yellow","Nonfluorescent","Perfect on {110}, with intersections of ~56° and ~124°.","brittle","Biaxial","-","1.663","1.686","1.68","1.709","1.696","1.729","84","86","90","70",1.663,1.729,"r > v r, weak.","Visible","X = pale yellow; Y = pale yellow-brown; Z = pale brown.","Y = b; Z ∧ c = -16° to -12°; X ^ a = -3° to 2°.","Common mineral in medium- to high-grade metamorphosed iron formations. Also occurs as a product of contact metamorphism, and in some blueschist facies metaquartzites.","Muséum Nationale d’Histoire Naturelle, Paris, France.","Cummingtonite-Grunerite Series.\r\n\r\nThe original description of the mineral in 1847 incorrectly determined it to be a pyroxene.","Named in 1853 by Gustav Adolph Kenngott in honor of Emmanuel Ludwig (Louis) Gruner [May 11, 1809 Ittigen, Switzerland - March 26, 1883 Beaucaire, France], professor of chemistry at the Ecole Nationale Supérieure des Mines de Saint-Etienne and later chief mining engineer of Poitiers Department following as director of the School of Mines at Saint-Etienne. He became department head of metallurgy of Ecole des Mines in Paris and held several additional posts in government mining offices. Gruner was the first to chemically analyze the mineral which now bears his name.\r\n\r\nSome early authors incorrectly spelled the name 'grünerite'.","2026-05-14 15:51:31",[89],{"id":90,"name":91,"entrytype":43,"csystem":11,"ima_formula":11,"mindat_formula":92,"hmin":11,"hmax":11,"dmeas":33,"dcalc":33,"primary_image_id":93},8738,"Amosite","◻{Fe\u003Csup>2+\u003C\u002Fsup>\u003Csub>2\u003C\u002Fsub>}{Fe\u003Csup>2+\u003C\u002Fsup>\u003Csub>5\u003C\u002Fsub>}(Si\u003Csub>8\u003C\u002Fsub>O\u003Csub>22\u003C\u002Fsub>)(OH)\u003Csub>2\u003C\u002Fsub>",32698,[95],{"id":96,"name":97,"entrytype":9,"csystem":34,"ima_formula":98,"mindat_formula":99,"hmin":35,"hmax":47,"dmeas":100,"dcalc":101,"primary_image_id":102},1170,"Cummingtonite","◻Mg\u003Csub>2\u003C\u002Fsub>Mg\u003Csub>5\u003C\u002Fsub>Si\u003Csub>8\u003C\u002Fsub>O\u003Csub>22\u003C\u002Fsub>(OH)\u003Csub>2\u003C\u002Fsub>","◻Mg\u003Csub>2\u003C\u002Fsub>Mg\u003Csub>5\u003C\u002Fsub>(Si\u003Csub>8\u003C\u002Fsub>O\u003Csub>22\u003C\u002Fsub>)(OH)\u003Csub>2\u003C\u002Fsub>","3.1","3.3",51346,[104],{"id":105,"name":106,"entrytype":9,"csystem":34,"ima_formula":107,"mindat_formula":108,"hmin":44,"hmax":44,"dmeas":109,"dcalc":110,"primary_image_id":11},6938,"Ferrokinoshitalite","BaFe\u003Csup>2+\u003C\u002Fsup>\u003Csub>3\u003C\u002Fsub>(Si\u003Csub>2\u003C\u002Fsub>Al\u003Csub>2\u003C\u002Fsub>)O\u003Csub>10\u003C\u002Fsub>(OH)\u003Csub>2\u003C\u002Fsub>","(Ba,K)(Fe\u003Csup>2+\u003C\u002Fsup>,Mg)\u003Csub>3\u003C\u002Fsub>(Al\u003Csub>2\u003C\u002Fsub>Si\u003Csub>2\u003C\u002Fsub>O\u003Csub>10\u003C\u002Fsub>)(OH,F)\u003Csub>2\u003C\u002Fsub>","3.69","3.59",[112,119],{"id":113,"name":114,"entrytype":9,"csystem":115,"ima_formula":17,"mindat_formula":15,"hmin":116,"hmax":47,"dmeas":117,"dcalc":33,"primary_image_id":118},1464,"Ferro-anthophyllite","Orthorhombic",5.5,"3.24",8677,{"id":120,"name":121,"entrytype":9,"csystem":115,"ima_formula":17,"mindat_formula":15,"hmin":11,"hmax":11,"dmeas":11,"dcalc":122,"primary_image_id":11},7254,"Proto-ferro-anthophyllite","3.54",[124],{"id":125,"txt":126,"latitude":127,"longitude":128,"country":129},31645,"Serevengude ravine, Collobrières, Toulon, Var, Provence-Alpes-Côte d'Azur, France",43.2696871,6.3573695,"France",246,[132,135,139,144,148,152,157,161,166,170,174,178,182,186,191,195,199,204,208],{"id":133,"year":28,"html":134,"doi":11},17051588,"Gruner, Emmanuel L. (1847) Untitled communication (presented by Dufrénoy) [Description d'un minéral nouveau dont la composition correspond à un pyroxène à base de fer] [[Description of a new mineral whose composition corresponds to an iron-based pyroxene]], in \u003Ci>Séance du lundi 4 janvier 1847\u003C\u002Fi>. \u003Ci>Compte Rendus Hebdomadaires des Seances de l'Academie des Sciences\u003C\u002Fi>,  24 (1) 794-795",{"id":136,"year":137,"html":138,"doi":11},16110952,1853,"Kenngott, A. (1853) Das Mohs'sche Mineralsystem dem gegenwärtigen Standpunkt der Wissenschaft germäss bearbeitet. Wien, Gerol & Sohn, p.69.",{"id":140,"year":141,"html":142,"doi":143},399471,1886,"Lacroix, Alfred (1886) Propriétés optiques de la grünérite de Collobrières (Var) \u003Ci>Bulletin de Minéralogie\u003C\u002Fi>,  9 (2) 40-41 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.3406\u002Fbulmi.1886.1977'>doi:10.3406\u002Fbulmi.1886.1977\u003C\u002Fa>","10.3406\u002Fbulmi.1886.1977",{"id":145,"year":146,"html":147,"doi":11},16110954,1969,"Finger, L.W. (1969) The crystal structure and cation distribution of a grunerite. Mineralogical Society of America Special Paper 2: 95-100.",{"id":149,"year":150,"html":151,"doi":11},527132,1978,"Leake, Bernard E. (1978) Nomenclature of amphiboles. \u003Ci>American Mineralogist\u003C\u002Fi>,  63 (11-12) 1023-1052 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM63\u002FAM63_1023.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":153,"year":154,"html":155,"doi":156},3215,1981,"Whittaker, E. J. W., Cressey, B. A., Hutchison, J. L. (1981) Terminations of multiple-chain lamellae in grunerite asbestos. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  44 (333) 27-35 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.1981.44.333.03'>doi:10.1180\u002Fminmag.1981.44.333.03\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002FMinMag\u002FVolume_44\u002F44-333-27.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.1981.44.333.03",{"id":158,"year":154,"html":159,"doi":160},3273,"Whittaker, E. J. W., Cressey, B. A., Hutchison, J. L. (1981) Edge dislocations in fibrous grunerite. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  44 (335) 287-291 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.1981.044.335.08'>doi:10.1180\u002Fminmag.1981.044.335.08\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002FMinMag\u002FVolume_44\u002F44-335-287.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.1981.044.335.08",{"id":162,"year":163,"html":164,"doi":165},3358,1982,"Cressey, B. A., Whittaker, E. J. W., Hutchison, J. L. (1982) Morphology and alteration of asbestiform grunerite and anthophyllite. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  46 (338) 77-87 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.1982.046.338.13'>doi:10.1180\u002Fminmag.1982.046.338.13\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002FMinMag\u002FVolume_46\u002F46-338-77.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.1982.046.338.13",{"id":167,"year":163,"html":168,"doi":169},3395,"Whittaker, E. J. W., Cressey, B. A., Hutchison, J. L. (1982) Sidestepping of multiple-chain lamellae in grunerite asbestos. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  46 (339) 273-274 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.1982.046.339.17'>doi:10.1180\u002Fminmag.1982.046.339.17\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002FMinMag\u002FVolume_46\u002F46-339-273.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.1982.046.339.17",{"id":171,"year":172,"html":173,"doi":11},16110955,1983,"Uchida, E. (1983) Grunerite from the Shinyama ore deposit, Kamaishi mine, Japan. The Canadian Mineralogist: 21: 517-528.",{"id":175,"year":176,"html":177,"doi":11},529697,1994,"Hirschmann, Marc, Evans, Bernard W., Yang, Hexiong (1994) Composition and temperature dependence of Fe-Mg ordering in cummingtonite-grunerite as determined by X-ray diffraction. \u003Ci>American Mineralogist\u003C\u002Fi>,  79 (9-10) 862-877 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM79\u002FAM79_862.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":179,"year":180,"html":181,"doi":11},16106870,1997,"Leake, B. E., Woolley, A. R., Arps, C. E. S., Birch, W. D., Gilbert, M. C., Grice, J. D., Hawthorne, F. C., Kato, A., Kisch, H. J., Krivovochev, V. G., Linthout, K., Laird, J., Mandarino, J. A., Maresch, W. V., Nickel, E.H., Rock, N. M. S., Schumacher, J. C., Smith, D. C., Stephenson, N. C. N., Ungaretti, L., Whittaker, E. J. W., Youzhi, Gou (1997) Nomenclature of amphiboles: report of the Subcommittee on Amphiboles of the International Mineralogical Association, Commission on New Minerals and Mineral Names. \u003Ci>The Canadian Mineralogist\u003C\u002Fi>,  35 (1) 219-246 \u003Ca target='_blank' href=' http:\u002F\u002Frruff.info\u002Frruff_1.0\u002Fuploads\u002FCM35_219.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":183,"year":184,"html":185,"doi":11},12909050,1998,"Mandarino, Joseph A. (1998) The Second List of Additions and Corrections to the Glossary of Mineral Species (1995) - The Amphibole Group. \u003Ci>The Mineralogical Record\u003C\u002Fi>, 29 (3) 169-174",{"id":187,"year":188,"html":189,"doi":190},127922,2000,"Ballaranl, Tiziana Boffa, Angel, Ross J., Carpenter, Michael A. (2000) High-pressure transformation behaviour of the cummingtonite-grunerite solid solution. \u003Ci>European Journal of Mineralogy\u003C\u002Fi>,  12 (6) 1195-1213 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1127\u002Fejm\u002F12\u002F6\u002F1195'>doi:10.1127\u002Fejm\u002F12\u002F6\u002F1195\u003C\u002Fa>","10.1127\u002Fejm\u002F12\u002F6\u002F1195",{"id":192,"year":193,"html":194,"doi":11},16964681,2001,"(2001) Grunerite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fgrunerite.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":196,"year":193,"html":197,"doi":198},152800,"Domeneghetti, M. C., Boffa Ballaran, T., Carpenter, M. A. (2001) Phase transition and mixing behaviour of the cummingtonite-grunerite solid solution. \u003Ci>Physics and Chemistry of Minerals\u003C\u002Fi>,  28 (2) 87-101 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fs002690000140'>doi:10.1007\u002Fs002690000140\u003C\u002Fa>","10.1007\u002Fs002690000140",{"id":200,"year":201,"html":202,"doi":203},64226,2006,"Hawthorne, F. C., Oberti, R. (2006) On the classification of amphiboles. \u003Ci>The Canadian Mineralogist\u003C\u002Fi>,  44 (1) 1-21 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2113\u002Fgscanmin.44.1.1'>doi:10.2113\u002Fgscanmin.44.1.1\u003C\u002Fa>","10.2113\u002Fgscanmin.44.1.1",{"id":205,"year":206,"html":207,"doi":11},16110958,2007,"Roth, P. (2007) Grunerite. in Minerals first discovered in Switzerland and minerals named after Swiss individuals. Kristallografik Verlag (Achberg Germany): 182-183.",{"id":209,"year":210,"html":211,"doi":212},396910,2012,"Hawthorne, F. C., Oberti, R., Harlow, G. E., Maresch, W. V., Martin, R. F., Schumacher, J. C., Welch, M. D. (2012) Nomenclature of the amphibole supergroup. \u003Ci>American Mineralogist\u003C\u002Fi>,  97 (11) 2031-2048 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2138\u002Fam.2012.4276'>doi:10.2138\u002Fam.2012.4276\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Frruff_1.0\u002Fuploads\u002FAM97_2031.pdf' class='refpdflink'>\u003C\u002Fa>","10.2138\u002Fam.2012.4276",[214,221,231,241],{"id":215,"source_url":216,"license_code":217,"credit_html":218,"title":7,"description":11,"author":11,"original_width":219,"original_height":220},29815,"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F166216","CC BY-SA 4.0","Photo: Unknown author — http:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-sa\u002F4.0\u002F, courtesy of \u003Ca href=\"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F166216\" rel=\"noopener\">University of Tartu, Natural History Museum\u003C\u002Fa> via Europeana",1000,750,{"id":222,"source_url":223,"license_code":224,"credit_html":225,"title":226,"description":227,"author":228,"original_width":229,"original_height":230},10524,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=14865958","CC BY-SA 3.0","Leon Hupperichs, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=14865958\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Grunerite-87345.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGrunerite\" class=\"extiw\" title=\"en:Grunerite\">Grunerite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Michigamme Mine (Mt Shasta mine), \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMichigamme\" class=\"extiw\" title=\"en:Michigamme\">Michigamme\u003C\u002Fa>, Marquette iron range, Marquette County, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMichigan\" class=\"extiw\" title=\"en:Michigan\">Michigan\u003C\u002Fa>, USA (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-12364.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Greenish Grünerite xls. Field of view 5 mm. Depth of field is achieved with CombineZM. Specimen and photo Leon Hupperichs\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Leon Hupperichs",561,422,{"id":232,"source_url":233,"license_code":234,"credit_html":235,"title":236,"description":237,"author":238,"original_width":239,"original_height":240},10526,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=65950455","Public domain","Fernando Brederodes, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=65950455\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Grunerite-648168.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGrunerite\" class=\"extiw\" title=\"en:Grunerite\">Grunerite\u003C\u002Fa> (Field of view 5 mm)\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Michigamme Mine (Mt Shasta mine), Michigamme, Marquette iron range, Marquette Co., Michigan, USA\u003C\u002Fdd>\n\u003Cdd>\u003Ci>Original description:\u003C\u002Fi> Spray of crystals Grunerite on matrix; Photo and collection Fernando Brederodes.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Fernando Brederodes",640,480,{"id":242,"source_url":243,"license_code":244,"credit_html":245,"title":246,"description":247,"author":248,"original_width":249,"original_height":250},10528,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=163476679","CC0 1.0","Creator:Mike Davis, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=163476679\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Bijiki Schist (grunerite-magnetite rock) (GeoDIL number - 412).jpg","This rather unusual rock from Michigamme, Michigan, is a very fine grained schist. The top surface is mostly black-green fine grained grunerite (Fe-amphibole); beneath it is a layer of fine grained black magnetite. The sample is 9.5 cm across.","Creator:Mike Davis",2524,1794,[252],{"id":253,"url":254,"label":255,"formula":256,"spacegroup":257,"year":146},5793,"\u002Fcif\u002F5793.cif","Finger 1969","(Fe6.1 Mg.9) Si8 O23.5 (F.5 H1.5)","C 1 2\u002Fm 1",[],[260,264,268,272,278,283,287,290,294,298,301,306,310,316,320,323,327,330,333,337,341,345,349,352,357,360,363],{"lang":261,"names":262},"af",[263],"Gruneriet",{"lang":265,"names":266},"ar",[267],"غرونيريت",{"lang":269,"names":270},"ca",[271],"grunerita",{"lang":273,"names":274},"de",[275,276,277],"Amosit","Braunasbest","Grunerit",{"lang":279,"names":280},"es",[281,282],"Amosita","Grunerita",{"lang":284,"names":285},"et",[286],"grüneriit",{"lang":288,"names":289},"eu",[282],{"lang":291,"names":292},"fi",[293],"Gruneriitti",{"lang":295,"names":296},"fr",[297],"Grunérite",{"lang":299,"names":300},"gl",[282],{"lang":302,"names":303},"he",[304,305],"אמוסיט","גרונריט",{"lang":307,"names":308},"it",[309],"grunerite",{"lang":311,"names":312},"ja",[313,314,315],"アモサイト","グニュネル閃石","グリュネル閃石",{"lang":317,"names":318},"nb",[319],"Amositt",{"lang":321,"names":322},"nl",[263],{"lang":324,"names":325},"nn",[326],"amositt",{"lang":328,"names":329},"no",[319],{"lang":331,"names":332},"ro",[277],{"lang":334,"names":335},"ru",[336],"грюнерит",{"lang":338,"names":339},"sr",[340],"грунерит",{"lang":342,"names":343},"ta",[344],"குருனெரைட்டு",{"lang":346,"names":347},"uk",[348],"Грюнерит",{"lang":350,"names":351},"vi",[7],{"lang":353,"names":354},"zh",[355,356],"鐵閃石","铁闪石",{"lang":358,"names":359},"zh-cn",[356],{"lang":361,"names":362},"zh-hans",[356],{"lang":364,"names":365},"zh-hant",[355],"Q420442",{"history":11,"applications":11}]