Mineral Information and Data:

Altaite
PbTe [CNMNC approved formula]

Named for the locality: Altai Mountains, Siberia, Russia.

IMA status : Valid species (Pre-IMA 1845) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
02.08.01.03  
  (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 = 6.443 Å
Crystal Habit: Tin-white with yellowish tint
Twinning: No data
  
Color: Tin-white with yellowish tint
Diaphaneity: Opaque
Luster: Metallic
Hardness (Mohs): 2 to 3
Measured Density: 8.15 to 8.19 g/cm3
Cleavage: 1; {001} perfect
Tenacity: Brittle to sectile
Fracture: Subconchoidal
Streak: Black
  
Geologic Setting: Typically in hydrothermal vein Au–Te-bearing deposits
Mineral Association: Gold, silver, antimony, tellurium, tellurantimony, galena, pyrite, hessite,
nagyágite, tetrahedrite, sylvanite, petzite, calaverite, arsenopyrite, sphalerite, chalcopyrite,
jamesonite, boulangerite, bournonite, aguilarite, pyrrhotite, siderite, cerussite, quartz
  
Synonyms/varieties: Lead telluride,
Comments: Series with clausthalite and with galena.

 

Altaite
Altaite with Gold
Origin: Sonora, Tuolumne Co., California, U.S.A.
Sample size: Microscopic image
Photo and Owner: Lou Perloff

 

Altaite
Origin: Rosia Montana (Verespatak), Transylvania, Romania
Sample size: Microscopic image
Photo and Owner: Lou Perloff

 

Altaite
Tin-white metallic altaite in matrix.
Origin: Dona Ana Co., New Mexico, U.S.A.
Sample size: 3 x 3.5 cm
Photo : Diederik Visser

 

Altaite
(zoom-in of above)

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