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Formula: Bi4(Se,S)3
Sulphide, bismuth and
selenium bearing mineral
Crystal System: Trigonal
Specific gravity: 7.93 measured
Hardness: 2
Streak: Greyish black
Colour: Lead-grey, lead-white
Common impurities: Pb,Ag,Cu,Zn
Environments
Localities
At the type locality, Orijärvi, Kisko, Salo, Southwest Finland, Finland, laitakarite was found as thin veinlets, less than 2 mm wide, in
quartz-anthophyllite-cordierite
rock, associated with native bismuth, chalcopyrite,
sphalerite, molybdenite, native
silver, pyrite and
galena
(AM 44.908).
At the Nevskoe W-Sn Deposit, Omsukchan, Ducat District, Kolyma River Basin, Magadan Oblast, Russia, laitakarite is associated with
nevskite, wolframite,
natanite, wittite,
selenium-bearing bismuthinite,
selenium-bearing cosalite,
cassiterite and guanajuatite
(HOM).
At the Kuraminskie Mountains, Chatkal-Kuraminskii Range, Tashkent, Uzbekistan, laitakarite is associated with
tetrahedrite–tennantite,
luzonite–famatinite,
pyrite, mawsonite,
nekrasovite, chalcopyrite,
emplectite, bismuth,
calcite, quartz and
baryte
(HOM).
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