К минералам

RRUFF #860

Alunite

Элементы:KAlSOH
Valence:KAlS^6+OH

Химия

IMA chemistry:
KAl3(SO4)2(OH)6
Valence chemistry:
KAl3(S6+O4)2(OH)6

Классификация

Crystal systems:
hexagonal
Space groups:
R3m
Structural group:
Alunite-Alunite
IMA status:
Approved, Redefined

Происхождение

Country:
Italy / Ukraine
Published:
1565
Oldest age Ma:
3200
Paragenetic modes:
Abiotic, Biotic, Secondary, Stage 7: Great Oxidation Event, PM45 - Oxidized fumarolic minerals, PM46 - Near-surface hydrothermal alterations, PM47 - Low-T subaerial oxidative hydration/weathering, Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere, PM50 - Coal and/or oil shale minerals, Stage 10b: Anthropogenic minerals, PM54 - Coal and other mine fire minerals

Примечания

Originally called alumen de Tolpha: Gesner C (1565) Alumen. in De omni rerum fossilium genere, gemmis, lapidibus, metallis, et huiusmodi, libri aliquot, plerique nunc primum editi Excudebat Iacobus Gesnerus 11-13 The mineral was named alunite in this publication: Beudant F S (1824) 22e espèce. Alunite., in Traité Élémentaire de Minéralogie, Chez Verdière, Libraire (Paris) 449-450