Mineral Information and Data:

Abramovite
Pb2SnInBiS7 [CNMNC approved formula]

Named for Dmitry Abramov, Russian mineralogist(1963–), of the Fersman Museum.

IMA status : Approved Species 2006 (IMA2006-016)
CLASSIFICATION 
Dana
(8th edition) :
03.01.04.05  
  (03) Sulfides - Sulfosalts
  (03.01) where z/y > 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.01.04) Cylindrite Group
  
Nickel-Strunz
(10th edition) :
02.HF.25a
  (02) Sulfides
  (02.H) Sulfosalts of SnS Archetype
  (02.HF) With SnS and PbS archetype structure units
  
Crystal system: Triclinic System
Point group (H-M): 1 — pinacoidal
Unit cell: a = 23.4(3) Å, b = 5.77(2) Å, c = 5.83(2) Å α = 89.1°, β = 89.9°, γ = 91.5°
Crystal Habit: minute metallic aggregates, less than 1 mm across
  
Color: Silver gray
Diaphaneity: Opaque
Luster: Metallic
Cleavage: Perfect {100}
Streak: Black
  
Geologic Setting: Found as a fumarole crust at 600-620°C. Cylindrite family.
  

 

Abramovite
Fragments of feathery abramovite crystals (RRUFF ID R070037)
Origin: Kudriavy, Iturup Island, Russia.
Photo: © Rruff Project

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