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RRUFF #813

Akdalaite

Элементы:AlOH
Valence:AlOH

Химия

IMA chemistry:
Al5O7(OH)
Valence chemistry:
Al5O7(OH)

Классификация

Crystal systems:
orthorhombic, hexagonal
Space groups:
P63mc, Cmc21, P31c
Structural group:
Nolanite
IMA status:
Approved

Происхождение

Country:
Kazakhstan
Published:
1969
Oldest age Ma:
623.3
Paragenetic modes:
Abiotic, Secondary, Stage 4a: Earth's earliest continental crust, PM23 - Subaerial alteration

Примечания

Shpanov E P, Sidorenko G A, Stolyarova T I (1970) Akdalaite, a new hydrous modification of alumina. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 99(3), 333-339 Chemical formula revised from (Al2O3)5·H2O: Parise J B, Xia B, Simonson J W, Woerner W R, Plonka A M, Phillips B L, Ehm L (2019) Structural chemistry of akdalaite, Al10O14(OH)2, the isostructural aluminum analogue of ferrihydrite. Crystals 9, 246