Abramovite — Photo: D. Nishio-Hamane · CC BY 4.0
Abramovite
A very rare sulfosalt of lead, tin, indium and bismuth that forms paper-thin elongated crystals barely a millimetre long.
Intro adapted from Wikipedia (CC BY-SA).
Abramovite is an IMA-recognized mineral species in the sulfosalt class, with the chemical formula Pb₂SnInBiS₇.
It crystallizes in the triclinic crystal system (space group P1).
Key properties: Black streak; Metallic luster.
IMA symbol Abm, IMA status: approved, named in 2006.
A product of precipitation from fumarolic gases (600° C) in an active stratovolcano.
It is found associated with Pyrrhotite, pyrite, wurzite, galena, halite, sylvite, anhydrite.
The mineral was named to honor Russian mineralogist Dmitry Vadimovich Abramov (1963–) of the A.E. Fersman Museum, Russia.