Bettertonite
http://dbpedia.org/resource/Bettertonite an entity of type: Thing
La bettertonita és un mineral de la classe dels arsenats. Rep el nom en honor de John Betterton (Londres, 1959), geòleg i mineralogista del museu educatiu Haslemere, a Surrey, Anglaterra, per les seves extenses contribucions a la caracterització de minerals de la mina de Penberthy Croft durant més de 30 anys.
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Bettertonite is a mineral of the arsenate category, named after John Betterton. He was a museum geologist and mineralogist at Haslemere Educational Museum in Surrey, England. Bettertonite is a white arsenate mineral with a formula of [Al6(AsO4)3(OH)9(H2O)5]・11H2O. Bettertonite is in the monoclinic system and has a heteropolyhedral layered structure type. It is a natural forming polyoxometalate. Bettertonite forms in clusters of radiating rectangular laths. Laths are thin and usually < 20 μm laterally. Laths are flat on {010}. Bettertonite is similar to penberthycroftyite and it transforms into penberthycroftyite at low temperatures (67-97 ℃).
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Bettertonita mineral bat da.
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Bettertonite
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Bettertonita
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Bettertonita
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Bettertonite
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Bettertonite
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62027032
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1094917311
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White
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Not observed
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Not observed
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a = 7.773 Å; b = 26.991 Å; c = 15.867 Å; β = 94.22°
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Prismatic
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White
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2.02
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2
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La bettertonita és un mineral de la classe dels arsenats. Rep el nom en honor de John Betterton (Londres, 1959), geòleg i mineralogista del museu educatiu Haslemere, a Surrey, Anglaterra, per les seves extenses contribucions a la caracterització de minerals de la mina de Penberthy Croft durant més de 30 anys.
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Bettertonite is a mineral of the arsenate category, named after John Betterton. He was a museum geologist and mineralogist at Haslemere Educational Museum in Surrey, England. Bettertonite is a white arsenate mineral with a formula of [Al6(AsO4)3(OH)9(H2O)5]・11H2O. Bettertonite is in the monoclinic system and has a heteropolyhedral layered structure type. It is a natural forming polyoxometalate. Bettertonite forms in clusters of radiating rectangular laths. Laths are thin and usually < 20 μm laterally. Laths are flat on {010}. Bettertonite is similar to penberthycroftyite and it transforms into penberthycroftyite at low temperatures (67-97 ℃).
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Bettertonita mineral bat da.
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δ = 0.012
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Perfect cleavage on {010}
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Translucent
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[Al6395]・11H2O
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Not observed
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Ultrathin rectangular laths
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Bet
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Vitreous, Silky, Pearly
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Not observed
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77.47
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Biaxial positive α = 1.511 , β = 1.517 , γ = 1.523
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Non-pleochroic
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Group
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Arsenates
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Not observed
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5052