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Formula: Al(SO4)F(H2O)5
Hydrated sulphate containing halogen
Crystal System: Orthorhombic
Specific gravity: 1.925 measured, 1.942 calculated
Hardness: 1 to 2
Streak: White
Colour: Colourless
Environments
Khademite occurs as a post-mine efflorescence (Webmin), and, rarely, it is formed in the oxidised
zone of hydrothermal base-metal deposits
(HOM).
Localities
At the type locality, Kavir-e-Sagand, Saghand, Ardakan County, Yazd Province, Iran, khademite was found
associated with
copiapite, butlerite,
parabutlerite, jarosite,
amarantite and alunogen
(AM 60.486).
At Mine no. 2, Byk Mountain, Lermontovskoe U Deposit, Pyatigorsk, Stavropol Krai, Russia,
gurzhiite occurs as fine-grained aggregates forming veinlets up to
50 cm long in cracks of the brecciated rock.
Gurzhiite aggregates are composed of small bladed crystals up to 0.1 mm
across. Associated minerals include khademite and quartz.
(MM 86.3.412–421).
At the Lone Pine mine, Lone Pine Hill area, Wilcox Mining District, Catron County, New Mexico, USA,
khademite has
been found associated with with wilcoxite,
lannonite and gypsum
(HOM).
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