Mineral Information and Data:

Alabandite
MnS [CNMNC approved formula]

Named after its locality Alabanda, Turkey.

IMA status : Valid species (Pre-IMA 1832) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
02.08.01.04  
  (02) Sulfides - Including Selenides and Tellurides
  (02.08) where Am Bn Xp, with (m+n):p=1:1
  (02.08.01) Galena Group (Isometric: Fm3m)
  
Nickel-Strunz
(10th edition) :
02.CD.10
  (02) Sulfides
  (02.C) Metal Sulfides, M:S = 1:1 (and similar)
  (02.CD) With Sn, Pb, Hg, etc.
  
Crystal system: Cubic System
Point group (H-M): m3m (or 4/m 3 2/m) — hexoctahedral
Unit cell: a = 5.214 Å
Crystal Habit: Crystals cubic or octahedral; massive, granular
  
Color: Iron-black; tarnishes brown
Diaphaneity: Opaque but translucent in very thin splinters
Luster: Submetallic
Hardness (Mohs): 3.5 - 4
Measured Density: 3.95 to 4.04 g/cm3
Cleavage: 1; {001} perfect
Tenacity: Brittle
Fracture: Uneven
Streak: Green
  
Polymorphism and Series: Dimorphous with rambergite.
Geologic Setting: May be in large quantities in epithermal polymetallic sulfide vein and especially in low-temperature manganese deposits. An uncommon constituent of a number of meteorites.
Mineral Association: Galena, chalcopyrite, sphalerite, pyrite, acanthite, tellurium, rhodochrosite, calcite, rhodonite, quartz
  

 

Alabandite
Origin: Nagyag, Romania
Sample size: 5.5 x 4.5 x 4 cm
Photo: Rob Lavinsky

 

Alabandite
(zoom-in of above)

 

Alabandite
Black massive crystalline alabandite
Origin: Onoras, Sonora, Mexico
Sample size: 3 x7 cm
Photo: Diederik Visser

<<< BACK TO MINERAL SEARCH