tetradymite

(redirected from Bismuth tritelluride)
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tetradymite

[tə′trad·ə‚mīt]
(mineralogy)
Bi2Te2S A pale steel-gray mineral that usually occurs in foliated masses in auriferous veins; has metallic luster, hardness of 1.5-2 on Mohs scale, and specific gravity of 7.2-7.6.