Abramovite

Abramovite
General
Category Sulfides and Sulfosalts
Formula
(repeating unit)		 Pb2SnInBiS7
Strunz classification 2.HF.25a (10th edition)
Dana classification 03.01.03.03
Crystal system Triclinic
Crystal class Pinacoidal (1)
H-M symbol: (1)
Space group P1
Unit cell a = 23.4 Å, b = 5.77 Å
c = 5.83 Å; α = 89.1°
β = 89.9°, γ = 91.5°; Z = 4
Identification
Formula mass 1,066.44 g/mol
Color Silver gray
Crystal habit Encrustations - Forms crust-like aggregates on matrix
Twinning Lamellar on {100}
Cleavage Perfect on {100}
Luster Metallic
Streak Black
Diaphaneity Opaque
References [1][2][3][4]

Abramovite is a very rare mineral from the sulfides and sulfosalt categories. It has the chemical formula Pb2SnInBiS7. It occurs as tiny elongated lamellar-shaped crystals, up 1 mm × 0.2 mm in size, and is characterized by its non-commensurate structure.[4]

Etymology and History

Abramovite is named after the mineralogist Dmitry Vadimovich Abramov (born 1963) of the A.E. Fersman Museum, Russia.[1]

It was discovered as fumarole crust on the Kudriavy (Kudryavyi) volcano, Iturup Island, Kuril Islands, Sakhalin Oblast, Far East Region, Russia.[4]

Formation

Abramovite is a product of precipitation from fumarolic gases (600 °C [1,112 °F]) in an active stratovolcano.[1]

References

  1. 1 2 3 Handbook of Mineralogy
  2. ↑ Mindat.org
  3. ↑ Webmineral.com Webmineral Data
  4. 1 2 3 Yudovskaya, M.A.; Trubkin, N.V.; Koporulina, E.V.; Belakovsky, D.I.; Mokhov, A.V.; Kuznetsova, M.V.; Golovanova, T.I. (2007). "Abramovite, Pb2SnInBiS7, a new mineral species from fumaroles of the Kudryavy Volcano, Kurile Islands". Zapiski Rossiiskogo Mineralogicheskogo Obshchestva (in Russian): 37–43. Bibcode:2008GeoOD..50..551Y. doi:10.1134/S1075701508070052. ISSN 0869-6055.
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