abramovite

{{Infobox mineral | name = Abramovite | category = Sulfides and sulfosalts | image = Abramovite.jpg | caption = | formula = Pb2SnInBiS7 |IMAsymbol=Abm | dana = 03.01.03.03 | strunz = 2.HF.25a (10th edition) | system = Triclinic | class = Pinacoidal () (same H-M symbol) | symmetry = P | 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 | molweight = 1,066.44 g/mol | color = Silver gray | habit = Encrustations – Forms crust-like aggregates on matrix | cleavage = Perfect on {100} | fracture = | tenacity = | mohs = | twinning = Lamellar on {100} | streak = Black | luster = Metallic | opticalprop = | refractive = | birefringence = | dispersion = | pleochroism = | 2V = | gravity = | melt = | fusibility = | diagnostic = | solubility = | diaphaneity = Opaque | references = }}

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.