[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:1783":3},{"id":4,"longid":5,"guid":6,"name":7,"shortcode_ima":8,"entrytype":9,"entrytype_text":10,"varietyof":11,"synid":11,"polytypeof":11,"groupid":11,"weighting":12,"nolocadd":13,"blacklisted":13,"mindat_formula":14,"mindat_formula_note":11,"ima_formula":14,"elements":15,"sigelements":19,"key_elements":20,"impurities":21,"cim":22,"ima_status":23,"ima_notes":11,"ima_history":11,"approval_year":11,"publication_year":11,"discovery_year":25,"strunz10ed1":26,"strunz10ed2":27,"strunz10ed3":28,"strunz10ed4":29,"dana8ed1":30,"dana8ed2":31,"dana8ed3":32,"dana8ed4":33,"csystem":34,"cclass":35,"spacegroup":11,"spacegroupset":36,"a":37,"b":38,"c":39,"alpha":36,"beta":36,"gamma":36,"aerror":40,"berror":41,"cerror":42,"alphaerror":11,"betaerror":11,"gammaerror":11,"va3":11,"z":43,"csmetamict":13,"commentcrystal":44,"twinning":11,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":11,"tlform":45,"hmin":11,"hmax":11,"hardtype":11,"vhnmin":36,"vhnmax":36,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":36,"dmeas2":36,"dcalc":46,"dmeaserror":11,"dcalcerror":47,"commentdense":11,"lustre":11,"lustretype":11,"commentluster":11,"diapheny":48,"streak":49,"colour":50,"commentcolor":51,"colors":52,"streak_colors":56,"luminescence":11,"uv":11,"cleavage":11,"cleavagetype":11,"fracturetype":11,"tenacity":11,"commentbreak":11,"opticaltype":57,"opticalsign":11,"opticalalpha":36,"opticalalpha2":36,"opticalalphaerror":11,"opticalbeta":58,"opticalbeta2":36,"opticalbetaerror":11,"opticalgamma":36,"opticalgamma2":36,"opticalgammaerror":11,"opticalomega":36,"opticalomega2":36,"opticalomegaerror":11,"opticalepsilon":36,"opticalepsilon2":36,"opticalepsilonerror":11,"opticaln":36,"opticaln2":36,"opticalnerror":11,"optical2vcalc":36,"optical2vcalc2":36,"optical2vcalcerror":11,"optical2vmeasured":36,"optical2vmeasured2":36,"optical2vmeasurederror":11,"rimin":59,"rimax":59,"opticaldispersion":60,"opticalpleochroism":61,"opticalpleochorismdesc":62,"opticalbirefringence":11,"opticalcomments":11,"opticalcolour":63,"opticalinternal":64,"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":65,"otheroccurrence":11,"type_specimen_store":66,"description_short":67,"aboutname":68,"rock_parent":11,"rock_parent2":11,"rock_root":9,"rock_bgs_code":11,"meteoritical_code":11,"updttime":69,"reviewed_at":11,"variety_of":11,"varieties":70,"group_members":71,"associates":72,"confused_with":73,"type_localities":90,"occurrence_total":97,"citations":98,"images":126,"structures":137,"synonyms":163,"language_names":166,"wikidata_qid":183,"texts":184},1783,"1:1:1783:7","1c2db24f-1d53-4e99-bc89-c51167da5efb","Guyanaite","Guy",0,"mineral",null,81,false,"CrO(OH)",[16,17,18],"Cr","O","H",[16,17,18],[16],"Fe, Al, V","7.14.4",[24],"APPROVED","1967","4","F","D","10","6","1","2","3","Orthorhombic",8,"0","4.860","4.305","2.954",3,10,4,2,"Space group is P2\u003Csub>1\u003C\u002Fsub>nm or Pnnm (LP phase); HP phase: Pnnm","microcrystalline aggregates, alluvial grains; very rarely as prismatic crystals, up to 0.1 mm","4.67",14,"Translucent","Yellow-brown, greenish brown","Reddish brown, golden brown, greenish brown, green,","probably variable with particle size and degree of oxidation;",[53,54,55],"brown","green","yellow",[55,53,54],"Biaxial","1.9",1.9,"r > v extreme","Weak","brown colours","gray with greenish tint","strong red to yellowish brown","In an alluvial placer deposit, in fine-grained intergrowth with other chromium oxide-hydroxide minerals","The Natural History Museum, London, England, 1979,136.","The β phase of CrO(OH). As with other Cr mineral species from the Merume River locality, such as bracewellite, grimaldiite, and mcconnellite, this species is NOT universally present in every specimen and verification of each specimen is required.\r\n\r\nA ...","Named in 1967 by Charles Milton, Daniel E. Appleman, Edward Ching-Te Chao, Frank Cuttita, Joseph I. Dinnin, Edward J. Dwornik, Margaret Hall, Blanche L. Ingram, and Harry J. Rose, Jr. for the country where the mineral was first found: Guyana \u002F Guiana.","2025-08-11 12:14:20",[],[],[],[74,81],{"id":75,"name":76,"entrytype":9,"csystem":34,"ima_formula":14,"mindat_formula":14,"hmin":77,"hmax":78,"dmeas":79,"dcalc":80,"primary_image_id":11},748,"Bracewellite",5.5,6.5,"4.45","4.28",{"id":82,"name":83,"entrytype":9,"csystem":84,"ima_formula":14,"mindat_formula":14,"hmin":85,"hmax":86,"dmeas":87,"dcalc":88,"primary_image_id":89},1750,"Grimaldiite","Trigonal",3.5,4.5,"4.11","4.13",10469,[91],{"id":92,"txt":93,"latitude":94,"longitude":95,"country":96},1969,"Merume River, Rest of Region 8, Potaro-Siparuni Region, Guyana",5.2666667,-59.8333333,"Guyana",5,[99,103,106,110,114,118,122],{"id":100,"year":101,"html":102,"doi":11},16103808,1976,"Milton, C., Appleman, D. E., Appleman, M. H., Chao, E. C. T., Cuttitta, F., Dinnin, J. I., Dwornik, E. J., Ingram, B. L. and Rose, H. J., Jr. (1976) Merumite, a complex assemblage of chromium minerals from Guyana. U.S. Geological Survey Professional Paper 887: 1-29.",{"id":104,"year":101,"html":105,"doi":11},16111063,"Christensen, N., Hansen, P., Lehmann, M.S. (1976) Isotope effects in the bonds of β-CrOOH and β-CrOOD. Journal of Solid State Chemistry: 19: 299-304.",{"id":107,"year":108,"html":109,"doi":11},526875,1977,"Fleischer, Michael, Cabri, Louis J., Nickel, Ernest H., Pabst, Adolf (1977) New Mineral Names. \u003Ci>American Mineralogist\u003C\u002Fi>,  62 (5-6) 593-600 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM62\u002FAM62_593.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":111,"year":112,"html":113,"doi":11},16964704,2005,"(2005) Guyanaite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fguyanaite.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":115,"year":116,"html":117,"doi":11},16111064,2012,"Jahn, S., Wunder, B., Koch-Müller, M., Tarrieu, L., Pöhle, M., Watenphul, A., Taran, M.N. (2012) Pressure-induced hydrogen bond symmetrisation in guyanaite, β-CrOOH: evidence from spectroscopy and ab initio simulations. European Journal of Mineralogy: 24(5): 839-850.",{"id":119,"year":120,"html":121,"doi":11},16111065,2014,"Schultze, D.J., Flemming, R.L., Shepherd, P.H.M., Helmstaedt, H. (2014) Mantle-derived guyanaite in a Cr-omphacite xenolith from Moses Rock diatreme, Utah. American Mineralogist: 99: 1277-1283.",{"id":123,"year":124,"html":125,"doi":11},16100989,2016,"Anthony, John W., Bideaux, Richard A., Bladh, Kenneth W., Nichols, Monte C. - \u003Ci>Eds.\u003C\u002Fi> (2016) Handbook of Mineralogy. \u003Ca target='_blank' rel='nofollow' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002F'>https:\u002F\u002Fwww.handbookofmineralogy.org\u002F\u003C\u002Fa>",[127],{"id":128,"source_url":129,"license_code":130,"credit_html":131,"title":132,"description":133,"author":134,"original_width":135,"original_height":136},8072,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=70553557","CC BY-SA 4.0","David Hospital, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=70553557\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Guyanaite & Eskolaite.jpg","Brown crystal aggregates of the very rare chromium mineral guyanaite on a matrix of black eskolaite from the type locality for guyanaite: Merume River, Kamakusa, Mazaruni District, Guyana.","David Hospital",707,667,[138,144,150,154,159],{"id":139,"url":140,"label":141,"formula":142,"spacegroup":143,"year":116},5828,"\u002Fcif\u002F5828.cif","Jahn 2012 · Cr O2 H","Cr O2 H","P 21 n m",{"id":145,"url":146,"label":147,"formula":148,"spacegroup":149,"year":116},5829,"\u002Fcif\u002F5829.cif","Jahn 2012 · Cr O2 H2","Cr O2 H2","P n n m",{"id":151,"url":152,"label":153,"formula":142,"spacegroup":143,"year":108},5831,"\u002Fcif\u002F5831.cif","Pernet 1977",{"id":155,"url":156,"label":157,"formula":158,"spacegroup":143,"year":101},5833,"\u002Fcif\u002F5833.cif","Christensen 1976 · Cr O2 D","Cr O2 D",{"id":160,"url":161,"label":162,"formula":142,"spacegroup":143,"year":101},5834,"\u002Fcif\u002F5834.cif","Christensen 1976 · Cr O2 H",[164,165],"Guyanaiet","IMA1967-034",[167,171,176,180],{"lang":168,"names":169},"ca",[170],"guyanaïta",{"lang":172,"names":173},"de",[174,175],"Guyanait","IMA 1967-034",{"lang":177,"names":178},"eu",[179],"Guyanaita",{"lang":181,"names":182},"it",[7],"Q3780063",{"history":11,"applications":11}]