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Formula: HgBr
Bromide, calomel group, forms a series with
calomel
Crystal System: Tetragonal
Specific gravity: 7.36 calculated
Hardness: 1½
Streak: Yellowish or creamy white
Colour: Colorless, bluish gray or dull white, sometimes with weak brown tint.
Solubility: Soluble in warm hydrochloric acid, readily soluble in aqua regia, darkens in KOH
Environments
Occurrence:
Localities
At the type locality, the Kadyrel' Hg occurrence, Oorash-Khem River Valley, Uyuk Range, Pi-Khem District, Tuva, Russia, kuzminite
occurs as grains 0.3-0.5 mm, aggregates up to 2.0 mm and powdery masses in vugs in mercury
sulphides, in calcite veins in a mercury ore deposit.
Associated minerals include eglestonite,
lavrentievite, kadyrelite,
calomel, mercury,
corderoite, cinnabar,
calcite and iron oxides
(AM 73.192).
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