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Formula: Hg3S2Cl2
Halide, paramorph of corderoite and
kenhsuite, forms a series with arzakite
Crystal System: Monoclinic
Hardness: 2 to 2½
Colour: Colourless to yellow
Environments
Localities
There are two type loclities, the Arzak Hg occurrence, and the Kadyrel Hg occurrence, Oorash-Khem River Valley, both in the
Uyuk Range, Pi-Khem District, Tuva, Russia. The lavrentievite occurs in the oxidised zone of the hydrothermal
mercury-bearing deposits.
At Arzak the lavrentievite and arzakite occur as intergrowths of complex form,
associated with cinnabar, corderoite,
quartz and kaolinite
At Kadyrel lavrentievite was associated with calomel, bromian
corderoite, bromian eglestonite,
kuzminite, cinnabar, iron oxides and
native mercury
(AM 70.873-874, HOM).
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