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Formula: Mn2AsSbS5
Sulphosalt, manganese- arsenic-
and antimony- bearing mineral
Crystal System: Monoclinic
Specific gravity: 4.181 calculated
Hardness: 4 to 4½
Streak: Black
Colour: Black
Environments
Sedimentary environments
Hydrothermal environments
Luboržákite is a relatively new mineral, approved in 2019 and to date (May 2022) reported only from the type
locality.
Localities
At the type locality, the Vorontsovskoe deposit, Tur'insk, Turya river, Turinsk-Auerbakovsk ore field, Serovsky
District, Sverdlovsk Oblast, Russia, luboržákite forms long-prismatic crystals up to 70 × 20 μm and anhedral
grains of the same size embedded in the matrix of manganese-bearing
dolomite and manganese-bearing
calcite. Associated minerals include
pyrite, orpiment,
realgar, stibnite,
aktashite, alabandite,
boscardinite, chabournéite,
coloradoite, clerite,
écrinsite, gold,
routhierite, sphalerite and
twinnite
(MM 84.5.738-745).
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