Stannite

Stannite
General
CategorySulfide mineral
Formula
(repeating unit)
Cu2FeSnS4
IMA symbolStn[1]
Strunz classification2.CB.15a
Crystal systemTetragonal
Crystal classScalenohedral (42m)
H-M symbol: (4 2m)
Space groupI42m
Unit cella = 5.4432, c = 10.7299 [Å]; Z = 2
Identification
ColorSteel-gray to iron-black, may tarnish blue
Crystal habitRarely as pseudo-octahedral crystals also massive, granular, and disseminated
TwinningPenetration twins on {102}
CleavageIndistinct on {110} and {001}
FractureUneven
Mohs scale hardness4
LusterMetallic
StreakBlack
DiaphaneityOpaque
Specific gravity4.3 – 4.5
References[2][3][4]

Stannite is a mineral, a sulfide of copper, iron, and tin, in the category of thiostannates.

  1. ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
  2. ^ "Stannite" (PDF). Handbook of Mineralogy.
  3. ^ "Stannite". Webmineral data.
  4. ^ "Stannite". Mindat.org.