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Formula: ([Hg1+]2)3OBr3(OH)
Hydroxyhalide of mercury, forms a series with
eglestonite
Crystal System: Isometric
Specific gravity: 8.79 calculated
Hardness: 2½ to 3
Streak: Yellow-orange
Colour: Bright to dull orange
Solubility: Readily soluble in 1:1 nitric acid, leaving a cotton-like white residue.
Environments
Localities
At the type locality. the Kadyrel' Hg occurrence, Oorash-Khem River Valley, Uyuk Range, Pi-Khem District, Tuva, Russia,
kadyrelite occurs in cavities in carbonate veins, or rarely forms individual grains up to 0.5 mm in size. It is
intergrown with eglestonite, and other associated minerals include
calomel, kuzminite,
corderoite and lavrentievite
(AM 74.503).
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