[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:71":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":20,"key_elements":11,"impurities":11,"cim":21,"ima_status":22,"ima_notes":11,"ima_history":11,"approval_year":24,"publication_year":11,"discovery_year":11,"strunz10ed1":25,"strunz10ed2":26,"strunz10ed3":27,"strunz10ed4":28,"dana8ed1":25,"dana8ed2":25,"dana8ed3":29,"dana8ed4":30,"csystem":31,"cclass":32,"spacegroup":33,"spacegroupset":34,"a":35,"b":34,"c":36,"alpha":34,"beta":34,"gamma":34,"aerror":37,"berror":11,"cerror":32,"alphaerror":11,"betaerror":11,"gammaerror":11,"va3":11,"z":37,"csmetamict":14,"commentcrystal":38,"twinning":11,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":39,"tlform":11,"hmin":11,"hmax":11,"hardtype":11,"vhnmin":34,"vhnmax":34,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":34,"dmeas2":34,"dcalc":40,"dmeaserror":11,"dcalcerror":11,"commentdense":11,"lustre":11,"lustretype":11,"commentluster":11,"diapheny":41,"streak":42,"colour":43,"commentcolor":11,"colors":44,"streak_colors":46,"luminescence":11,"uv":11,"cleavage":47,"cleavagetype":48,"fracturetype":11,"tenacity":11,"commentbreak":11,"opticaltype":49,"opticalsign":11,"opticalalpha":34,"opticalalpha2":34,"opticalalphaerror":11,"opticalbeta":34,"opticalbeta2":34,"opticalbetaerror":11,"opticalgamma":34,"opticalgamma2":34,"opticalgammaerror":11,"opticalomega":34,"opticalomega2":34,"opticalomegaerror":11,"opticalepsilon":34,"opticalepsilon2":34,"opticalepsilonerror":11,"opticaln":34,"opticaln2":34,"opticalnerror":11,"optical2vcalc":34,"optical2vcalc2":34,"optical2vcalcerror":11,"optical2vmeasured":34,"optical2vmeasured2":34,"optical2vmeasurederror":11,"rimin":11,"rimax":11,"opticaldispersion":11,"opticalpleochroism":11,"opticalpleochorismdesc":11,"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":50,"otheroccurrence":11,"type_specimen_store":51,"description_short":52,"aboutname":53,"rock_parent":11,"rock_parent2":11,"rock_root":9,"rock_bgs_code":11,"meteoritical_code":11,"updttime":54,"reviewed_at":11,"variety_of":11,"varieties":55,"group_members":56,"associates":83,"confused_with":84,"type_localities":94,"occurrence_total":99,"citations":100,"images":134,"structures":145,"synonyms":153,"language_names":157,"wikidata_qid":190,"texts":191},71,"1:1:71:6","fbd1c949-8e9c-45e9-9d85-99b6de05f4c5","Akhtenskite","Akh",0,"mineral",null,39941,102,false,"ε-Mn\u003Csup>4+\u003C\u002Fsup>O\u003Csub>2\u003C\u002Fsub>","MnO\u003Csub>2\u003C\u002Fsub>",[18,19],"Mn","O",[18,19],"7.18.5",[23],"APPROVED",1982,"4","D","B","15b","10","1","Hexagonal",20,126,"0","2.84","4.67",1,"Handbook of Mineralogy gives range: a = 2.83–2.85, c = 4.47–4.88 Å.","as microscopic crystals, flaky to platy on {001}, in parallel aggregates, sometimes in rows at 120°, probably due to replacement of an earlier hexagonal mineral;\r\nas flaky polycrystalline aggregates","4.78","Opaque","black","Light grey to black",[45,42],"gray",[42],"on {001}","Distinct\u002FGood","Uniaxial","in \"psilomelane\" with other manganese oxides in an iron oxide deposit, probably bacterially altered from a previous mineral","Mining Institute, St Petersburg, Russia","Synthetic akhtenskite coupled with goethite may be used in arsenic removal (Shih et al., 2015).","Named after its discovery locality in Russia.","2025-09-13 17:29:54",[],[57,67,75],{"id":58,"name":59,"entrytype":9,"csystem":31,"ima_formula":60,"mindat_formula":61,"hmin":62,"hmax":63,"dmeas":64,"dcalc":65,"primary_image_id":66},2940,"Nsutite","Mn\u003Csup>2+\u003C\u002Fsup>\u003Csub>x\u003C\u002Fsub>Mn\u003Csup>4+\u003C\u002Fsup>\u003Csub>1-x\u003C\u002Fsub>O\u003Csub>2-2x\u003C\u002Fsub>(OH)\u003Csub>2x\u003C\u002Fsub>","(Mn\u003Csup>4+\u003C\u002Fsup>,Mn\u003Csup>2+\u003C\u002Fsup>)(O,OH)\u003Csub>2\u003C\u002Fsub>",6.5,8,"4.24","4.86",17933,{"id":68,"name":69,"entrytype":9,"csystem":70,"ima_formula":71,"mindat_formula":72,"hmin":11,"hmax":11,"dmeas":34,"dcalc":73,"primary_image_id":74},3100,"Paramontroseite","Orthorhombic","VO\u003Csub>2\u003C\u002Fsub>","V\u003Csup>4+\u003C\u002Fsup>O\u003Csub>2\u003C\u002Fsub>","4.09",18693,{"id":76,"name":77,"entrytype":9,"csystem":70,"ima_formula":16,"mindat_formula":78,"hmin":79,"hmax":79,"dmeas":80,"dcalc":81,"primary_image_id":82},3359,"Ramsdellite","Mn\u003Csup>4+\u003C\u002Fsup>O\u003Csub>2\u003C\u002Fsub>",3,"4.37","4.79",20541,[],[85,93],{"id":86,"name":87,"entrytype":9,"csystem":88,"ima_formula":16,"mindat_formula":78,"hmin":89,"hmax":62,"dmeas":90,"dcalc":91,"primary_image_id":92},3318,"Pyrolusite","Tetragonal",2,"5.04","5.189",20263,{"id":76,"name":77,"entrytype":9,"csystem":70,"ima_formula":16,"mindat_formula":78,"hmin":79,"hmax":79,"dmeas":80,"dcalc":81,"primary_image_id":82},[95],{"id":96,"txt":97,"latitude":11,"longitude":11,"country":98},2795,"Akhtenskoe Fe deposit (Akhtenskoye), Magnitka, Kusinsky District, Chelyabinsk Oblast, Russia","Russia",6,[101,105,108,112,115,118,122,126,130],{"id":102,"year":103,"html":104,"doi":11},16099657,1987,"Chukhrov, F.V., Gorshkov, A.I., Drits, V.S. (1987) Advances in the crystal chemistry of manganese oxides. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 16: 210-221. [in Russian]",{"id":106,"year":103,"html":107,"doi":11},16099658,"Chukhrov, F.V., Gorshkov, A.I., Drits, V.S. (1987) Advances in the crystal chemistry of manganese oxides. International Geology Review: 29: 435-444.",{"id":109,"year":110,"html":111,"doi":11},16099659,1989,"Chukhrov, F.V., Gorshkov, A.I., Sivtsov, A.V., Berezovskaya, V.V., Dikov, Y.P., Dubinina, G.A., Varinov, N.N. (1989) Akhtenskite - the natural analog of ε-MnO2. Izvestiya Akademii Nauk SSSR, Ser. Geol.: 9: 75-80. [in Russian]",{"id":113,"year":110,"html":114,"doi":11},16099660,"Chukhrov, F.V., Gorshkov, A.I., Sivtsov, A.V., Berezovskaya, V.V., Dikov, Y.P., Dubinina, G.A., Varinov, N.N. (1989) Akhtenskite - the natural analog of ε-MnO2. International Geology Review: 31: 1068-1072.",{"id":116,"year":110,"html":117,"doi":11},16099664,"Chukhrov, F.V., Gorshkov, A.I., Sivtsov, A.V., Berezovskaya, V.V., Dikov, Y.P., Dubinina, G.A., Varinov, N.N. (1989) Akhtenskite - the natural analog of ε-MnO2. Izvestiya Akademii Nauk SSSR, Ser. Geol.: 9: 75-80. ",{"id":119,"year":120,"html":121,"doi":11},528921,1990,"Jambor, John L., Grew, Edward S. (1990) New Mineral Names. \u003Ci>American Mineralogist\u003C\u002Fi>,  75 (7-8) 931-937 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM75\u002FAM75_931.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":123,"year":124,"html":125,"doi":11},16641619,1997,"Anthony, John Williams, Bideaux, Richard A., Bladh, Kenneth W., Nichols, Monte C. - \u003Ci>Ed.\u003C\u002Fi> (1997) \u003Ci>Handbook of Mineralogy\u003C\u002Fi> Vol. 3 - Halides, Hydroxides, Oxides. Mineral Data Publishing, Tucson, Arizona. p.1-682.",{"id":127,"year":128,"html":129,"doi":11},16962588,2005,"(2005) Akhtenskite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fakhtenskite.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":131,"year":132,"html":133,"doi":11},16099663,2015,"Shih, Y.-J., Huang, R.-L. and Huang, Y.H. (2015): Adsorptive removal of arsenic using a novel akhtenskite coated wastegoethite. Journal of Cleaner Production: 87: 897-905",[135],{"id":136,"source_url":137,"license_code":138,"credit_html":139,"title":140,"description":141,"author":142,"original_width":143,"original_height":144},476,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=151494537","CC BY 4.0","David Hospital, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=151494537\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Akhtenskite.jpg","Long prismatic semimetallic crystals of the very rare Mn mineral akhtenskite from the type locality in Akhtenskoe Fe deposit, Russia (Akhtenskoe, Magnitka, Kusinskii Raion, Chelyabinsk Oblast, Russian Federation) and only one of the very few known localities worldwide. Ex Vandenbroucke Museum collection from Waregem, Belgium.","David Hospital",757,521,[146],{"id":147,"url":148,"label":149,"formula":150,"spacegroup":151,"year":152},182,"\u002Fcif\u002F182.cif","Kondrashev 1951","Mn.5 O","P 63 m c",1951,[154,155,156],"Akhtenskiet","Akhtenskitt","IMA1982-072",[158,162,167,171,175,178,182,186],{"lang":159,"names":160},"ca",[161],"akhtenskita",{"lang":163,"names":164},"de",[165,166],"Akhtenskit","IMA 1982-072",{"lang":168,"names":169},"eu",[170],"Akhtenskita",{"lang":172,"names":173},"fr",[174],"akhtenskite",{"lang":176,"names":177},"it",[174],{"lang":179,"names":180},"ja",[181],"アフテンスク鉱",{"lang":183,"names":184},"lv",[185],"Ahtenskīts",{"lang":187,"names":188},"zh",[189],"六方软锰矿","Q3607328",{"history":11,"applications":11}]