Altaite

PbTe
c 2001-2005 Mineral Data Publishing, version 1

Crystal Data: Cubic. Point Group: 4/m 3 2/m. Rarely in very small cubes and octahedra;
massive, as cleavages, to 1 cm; granular, myrmekitic in other sulfides.
Physical Properties:
Cleavage: {001}, perfect. Fracture: Subconchoidal. Tenacity: Sectile.
Hardness = 3 VHN = 47–53, 51 average. D(meas.) = 8.19 D(calc.) = 8.27
Optical Properties: Opaque. Color: Tin-white with yellowish tint, tarnishes bronze; inpolished section, white with a delicate greenish hue. Luster: Metallic.
R: (400) 59.6, (420) 62.6, (440) 65.2, (460) 67.5, (480) 69.3, (500) 70.6, (520) 71.2, (540) 71.1,(560) 70.1, (580) 68.7, (600) 66.8, (620) 65.1, (640) 63.4, (660) 61.9, (680) 60.6, (700) 59.4
Cell Data:

Space Group: F m3m. a = 6.439

Z=4

X-ray Powder Pattern: Kirkland Lake, Ontario, Canada.
3.23 (100), 2.29 (80), 1.443 (50), 1.314 (40), 1.859 (30), 1.610 (20), 1.074 (20)
Chemistry:PbCu
BiTeTotal

(1)
61.52

38.48

(2)
62.40.4
0.2
37.2

(3)
61.91

38.09

100.00100.2

100.00(1) Red Cloud mine, Colorado, USA. (2) Campbell mine, Bisbee, Arizona, USA; by electron
microprobe. (3) PbTe.
Occurrence:

Typically in hydrothermal vein Au–Te-bearing deposits.

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.
Distribution: Occurrences are too numerous to fully list. Selected localities are: in theZavodinskii mine, near Ziryanovsk, Altai Mountains, Kazakhstan [TL], hundreds of kg. At theBereznyakov gold deposit, Southern Ural Mountains, Russia. From Săcărı̂mb (Nagyág), Romania.
At Kalgoorlie, Western Australia. In the Fiji Islands, in the Tuvatu Au–Ag–Te deposit, Viti Levu.
From the Bulawan deposit, Negros Occidental, Phillipines. At several mines in the Kirkland Lakearea, Ontario, Canada. In the USA, in the Foote mine, Kings Mountain, Cleveland Co., NorthCarolina; the Red Cloud mine, Gold Hill, Boulder Co., Colorado; the Mayflower mine, Tobacco
Root Mountains, Madison Co., Montana; the Hilltop mine, near Las Cruces, Doña Ana Co., NewMexico; the Stanislaus mine, Carson Hill district, Calaveras Co., California; and the Minnamax
Cu–Ni–sulfide deposit, Duluth Gabbro complex, near Hibbing, St. Louis Co., Minnesota. From
the San Francisco mine, 145 km north of Hermosillo, Sonora, Mexico.
Name:

After the locality in the Altai Mountains, Kazakhstan.

References: (1) Palache, C., H. Berman, and C. Frondel (1944) Dana’s system of mineralogy,(7th edition), v. I, 205–207. (2) Berry, L.G. and R.M. Thompson (1962) X-ray powder data forthe ore minerals. Geol. Soc. Amer. Mem. 85, 48. (3) Sindeeva, N.D. (1964) Mineralogy and typesof deposits of selenium and tellurium, 121–125. (4) Criddle, A.J. and C.J. Stanley, Eds. (1993)
Quantitative data file for ore minerals, 3rd ed. Chapman & Hall, London, 10.

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