К минералам

RRUFF #5871

Bariopharmacoalumite

Элементы:BaAlAsOH
Valence:BaAlAs^5+OH

Химия

IMA chemistry:
Ba0.5Al4[(AsO4)3(OH)4]·4H2O
Valence chemistry:
Ba0.5Al4(As5+O4)3(OH)4·4H2O

Классификация

Crystal systems:
tetragonal, cubic
Space groups:
P43m, I42m
Structural group:
Pharmacosiderite
IMA status:
Approved

Происхождение

Country:
France
Published:
2010
Oldest age Ma:
252
Paragenetic modes:
Biotic, Secondary, Stage 7: Great Oxidation Event, PM47 - Low-T subaerial oxidative hydration/weathering

Примечания

Mills S J, Rumsey M S, Favreau G, Spratt J, Raudsepp M, Dini M (2011) Bariopharmacoalumite, a new mineral species from Cap Garonne, France and Mina Grande, Chile. Mineralogical Magazine 75, 135-144