TeallitePbSnS2
c 2001-2005 Mineral Data Publishing, version 1

Crystal Data: Orthorhombic, pseudotetragonal. Point Group: 2/m 2/m 2/m. Crystals thintabular on {001} with nearly square section, to 1 cm; lateral faces striated k their intersection
with {001}, and with striations on {001} k [110]. More commonly as massive aggregates of thin,graphitelike folia having irregular edges; warped or bent crystals typical. Twinning: Seen only inpolished section.
Physical Properties:
Cleavage: Perfect on {001}. Tenacity: Flexible, somewhat malleable.
Hardness = 1.5 VHN = n.d. D(meas.) = 6.36 D(calc.) = 6.567
Optical Properties: Opaque. Color: Grayish black, may tarnish dull or iridescent; in polishedsection, white with slight yellow tint. Streak: Black. Luster: Metallic. Pleochroism: Weak; inwhite with pale golden tint, and pure white. Anisotropism: Distinct to rather high.
R1 –R2 : (400) 39.8–43.7, (420) 40.4–44.0, (440) 41.0–44.3, (460) 41.6–44.4, (480) 42.0–44.5, (500)42.3–44.4, (520) 42.5–44.3, (540) 42.5–44.1, (560) 42.4–43.8, (580) 42.2–43.5, (600) 41.8–43.1, (620)
41.5–42.6, (640) 41.0–42.2, (660) 40.5–41.7, (680) 40.0–41.3, (700) 39.6–40.9
Cell Data:

Space Group: P bnm. a = 4.266(3)b = 11.419(7)c = 4.090(2)Z=2X-ray Powder Pattern: Montserrat, Bolivia.
2.84 (100), 3.41 (60), 1.419 (50), 3.27 (40), 2.33 (40), 2.03 (40), 1.090 (40)
Chemistry:PbFeSnS

(1)
52.09
0.17
30.55
16.91

(2)
53.13
30.43
16.44

Total [99.72]
100.00(1) Santa Rosa mine, Bolivia; recalculated after deduction of Zn 1.08% as ZnS. (2) PbSnS2 .
Occurrence:

A hydrothermal mineral in tin veins; may be an important ore mineral.

Association:

Cassiterite, stannite, franckeite, cylindrite, galena, sphalerite, wurtzite, pyrite.

Distribution: Found in many Bolivian tin veins, including those of the Santa Rosa [TL],
Ichucollo, and El Salvador mines, Montserrat, and the Porvenir mine, Huanuni, Oruro; Mount
Cerillos, near Carguaicollo, in the Cordillera de los Frailes, Potosı́; the Lipey Huaico mine,Ocuri; the San Alfredo mine, Colquiri; and the Aliada mine, Colquechaca. In the Ivigtut cryolitedeposit, southwestern Greenland. At Radvanice, near Trutnov, Czech Republic. From Sinantscha,Sichota-Alin, and Smirnowsk, Transbaikal, Russia. At the Wallah Wallah mine, Rye Park, NewSouth Wales, Australia. From the Toyoha mine, Hokkaido, Japan. In the Changpo deposit,
Dachang district, Guangxi Province, China.
Name: To honor Jethro Justinian Harris Teall (1849–1924), Director of the Geological Survey ofGreat Britain and Ireland.
Type Material:n.d.

References: (1) Palache, C., H. Berman, and C. Frondel (1944) Dana’s system of mineralogy,(7th edition), v. I, 439–441. (2) Hofmann, W. (1935) Ergebnisse der Srukturbestimmung
komplexer Sulfide. I. Die Struktur von Zinnsulfür SnS und Teallit PbSnS2 . Zeits. Krist., 92,161–185 (in German). (3) Mosburg, S., D.R. Ross, P.M. Bethke, and P. Toulmin (1961) X-raypowder data for herzenbergite, teallite, and tin trisulfide. U.S. Geol. Sur. Prof. Paper 424-C,C347–C348. (4) Berry, L.G. and R.M. Thompson (1962) X-ray powder data for the ore minerals.
Geol. Soc. Amer. Mem. 85, 75. (5) Ramdohr, P. (1969) The ore minerals and their intergrowths,(3rd edition), 660–662. (6) Criddle, A.J. and C.J. Stanley, Eds. (1993) Quantitative data file forore minerals, 3rd ed. Chapman & Hall, London, 549.
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