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Formula: Hg2+3S2(Br,Cl)2
Halide of mercury, forms a series with
lavrentievite
Crystal System: Monoclinic
Specific gravity: 7.64 calculated
Hardness: 2 to 2½
Streak: Greyish yellow
Colour: Colourless ro yellow
Environments
Arzakite has not yet been approved by the IMA, but it is probably valid.
Localities
Arzakite was originally reported from the Arzak Hg occurrence, Uyuk Range, Pii-Khem District, Tuva Republic,
Eastern-Siberian Region, Russia, from the oxidised zone of the hydrothermal deposit, where it occurs in asssociation with
lavrentievite, cinnabar,
corderoite, quartz and
kaolinite
(HOM).
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