Hydroxyhalide of mercury, forms a series with eglestonite
Specific gravity: 8.79 calculated
Hardness: 2½ to 3
Colour: Bright to dull orange
Solubility: Readily soluble in 1:1 nitric acid, leaving a cotton-like white residue.
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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