[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:46516":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":15,"elements":16,"sigelements":21,"key_elements":22,"impurities":11,"cim":11,"ima_status":23,"ima_notes":11,"ima_history":11,"approval_year":25,"publication_year":26,"discovery_year":11,"strunz10ed1":27,"strunz10ed2":28,"strunz10ed3":28,"strunz10ed4":11,"dana8ed1":29,"dana8ed2":29,"dana8ed3":29,"dana8ed4":29,"csystem":30,"cclass":31,"spacegroup":32,"spacegroupset":33,"a":34,"b":35,"c":36,"alpha":11,"beta":37,"gamma":11,"aerror":38,"berror":31,"cerror":39,"alphaerror":11,"betaerror":39,"gammaerror":11,"va3":11,"z":11,"csmetamict":13,"commentcrystal":11,"twinning":11,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":40,"tlform":41,"hmin":11,"hmax":11,"hardtype":11,"vhnmin":11,"vhnmax":11,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":11,"dmeas2":11,"dcalc":42,"dmeaserror":11,"dcalcerror":11,"commentdense":11,"lustre":11,"lustretype":43,"commentluster":44,"diapheny":45,"streak":46,"colour":46,"commentcolor":11,"colors":47,"streak_colors":49,"luminescence":11,"uv":11,"cleavage":11,"cleavagetype":11,"fracturetype":50,"tenacity":51,"commentbreak":11,"opticaltype":52,"opticalsign":53,"opticalalpha":54,"opticalalpha2":11,"opticalalphaerror":55,"opticalbeta":56,"opticalbeta2":11,"opticalbetaerror":55,"opticalgamma":57,"opticalgamma2":11,"opticalgammaerror":55,"opticalomega":11,"opticalomega2":11,"opticalomegaerror":11,"opticalepsilon":11,"opticalepsilon2":11,"opticalepsilonerror":11,"opticaln":11,"opticaln2":11,"opticalnerror":11,"optical2vcalc":11,"optical2vcalc2":11,"optical2vcalcerror":11,"optical2vmeasured":11,"optical2vmeasured2":11,"optical2vmeasurederror":11,"rimin":58,"rimax":59,"opticaldispersion":11,"opticalpleochroism":60,"opticalpleochorismdesc":11,"opticalbirefringence":11,"opticalcomments":11,"opticalcolour":11,"opticalinternal":11,"opticaltropic":11,"opticalanisotropism":11,"opticalbireflectance":11,"opticalextinction":61,"opticalr":11,"specdispm":11,"ir":11,"electrical":11,"magnetism":11,"thermalbehaviour":62,"other":11,"industrial":11,"occurrence":11,"otheroccurrence":11,"type_specimen_store":63,"description_short":64,"aboutname":65,"rock_parent":11,"rock_parent2":11,"rock_root":9,"rock_bgs_code":11,"meteoritical_code":11,"updttime":66,"reviewed_at":11,"variety_of":11,"varieties":67,"group_members":68,"associates":69,"confused_with":70,"type_localities":71,"occurrence_total":38,"citations":78,"images":96,"structures":97,"synonyms":98,"language_names":101,"wikidata_qid":123,"texts":124},46516,"1:1:46516:0","3b48aa0b-bf00-4f63-a2ba-d52abc19d162","Bettertonite","Bet",0,"mineral",null,42,false,"[Al\u003Csub>6\u003C\u002Fsub>(AsO\u003Csub>4\u003C\u002Fsub>)\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>9\u003C\u002Fsub>(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>5\u003C\u002Fsub>]·11H\u003Csub>2\u003C\u002Fsub>O","Al\u003Csub>6\u003C\u002Fsub>(AsO\u003Csub>4\u003C\u002Fsub>)\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>9\u003C\u002Fsub>(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>5\u003C\u002Fsub> · 11H\u003Csub>2\u003C\u002Fsub>O",[17,18,19,20],"Al","As","O","H",[17,18,19,20],[18],[24],"APPROVED",2014,2015,"8","D","0","Monoclinic",5,14,"P21\u002Fc ","7.773","26.991","15.867","94.22",2,3,"Ultrathin rectangular laths, with lateral dimensions generally \u003C20 μm. The laths are flattened on {010} and exhibit the forms {010}, {100} and {001}.","As tufts of white, ultrathin (sub-micrometre) rectangular laths, with lateral dimensions generally \u003C20 μm. ","2.02","Vitreous,Silky,Pearly","Vitreous to pearly, somewhat silky lustre","Translucent","White",[48],"white",[48],"Irregular\u002FUneven","flexible","Biaxial","+","1.511",1,"1.517","1.523",1.511,1.523,"Non-pleochroic","X = c; Y = b; Z = a.","Transformation to penberthycroftyite: 67-97°C, associated with 8% contraction of layer separation and  6Å relative sliding of the adjacent layers; T>100°C: formation of a \"displaced-layer\" phase, associated with further 8% layer contraction.","Cotype material is deposited in the mineralogical collections of Museum Victoria, Melbourne, Victoria, Australia, registration number M53274, and the Natural History Museum, London, UK, registration number BM2014,100","New structure type, closely related to that of penberthycroftite; both structures are flexible layered type, comprising corner-linked columns of heteropolyhedra.\r\n\r\nChemically similar to liskeardite.\r\n\r\nTransforms to penberthycroftyite at relatively lo...","Honors John Betterton (b. 1959, London), a museum geologist\u002Fmineralogist at Haslemere Educational Museum, Surrey, England, for his extensive contributions to the characterisation of minerals from the Penberthy Croft mine for more than 30 years. Also is an advanced mineral collector and micromounter.","2025-08-11 12:15:13",[],[],[],[],[72],{"id":73,"txt":74,"latitude":75,"longitude":76,"country":77},1251,"Penberthy Croft Mine, St Hilary, Cornwall, England, UK",50.141153,-5.4232444,"UK",[79,83,87,92],{"id":80,"year":26,"html":81,"doi":82},244613,"Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2015) New minerals and nomenclature modifications approved in 2014 and 2015. Newsletter No 23. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  79 (1) 51-58 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.2015.079.1.05'>doi:10.1180\u002Fminmag.2015.079.1.05\u003C\u002Fa>","10.1180\u002Fminmag.2015.079.1.05",{"id":84,"year":26,"html":85,"doi":86},244752,"Grey, I.E., Kampf, A.R., Price, J.R., Macrae, C.M. (2015) Bettertonite, [Al\u003Csub>6\u003C\u002Fsub>(AsO\u003Csub>4\u003C\u002Fsub>)\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>9\u003C\u002Fsub>(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>5\u003C\u002Fsub>]·11H\u003Csub>2\u003C\u002Fsub>O, a new mineral from the Penberthy Croft mine, St. Hilary, Cornwall, UK, with a structure based on polyoxometalate clusters. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  79 (7) 1849-1858 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.2015.079.7.16'>doi:10.1180\u002Fminmag.2015.079.7.16\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Frruff_1.0\u002Fuploads\u002FMM79_1849.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.2015.079.7.16",{"id":88,"year":89,"html":90,"doi":91},244849,2016,"Grey, Ian E., Brand, Helen E. A., Betterton, John (2016) Dehydration phase transitions in new aluminium arsenate minerals from the Penberthy Croft mine, Cornwall, UK. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  80 (7) 1205-1217 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.2016.080.126'>doi:10.1180\u002Fminmag.2016.080.126\u003C\u002Fa>","10.1180\u002Fminmag.2016.080.126",{"id":93,"year":94,"html":95,"doi":11},16963222,2017,"(2017) Bettertonite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fbettertonite.pdf' class='refpdflink'>\u003C\u002Fa>",[],[],[99,100],"Bettertoniet","IMA2014-074",[102,106,111,115,119],{"lang":103,"names":104},"ca",[105],"bettertonita",{"lang":107,"names":108},"de",[109,110],"Bettertonit","IMA 2014-074",{"lang":112,"names":113},"eu",[114],"Bettertonita",{"lang":116,"names":117},"it",[118],"bettertonite",{"lang":120,"names":121},"mk",[122],"Бетертонит","Q19862339",{"history":11,"applications":11}]