- a mineral, bismuth telluride and sulfide, Bi2Te2S, occurring in soft-gray to black foliated masses.
Origin of tetradymite
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Examples from the Web for tetradymite
It is also found in some comparatively rare minerals, such as tetradymite, combined with tellurium, and associated with gold.A Textbook of Assaying: For the Use of Those Connected with Mines.
Cornelius Beringer and John Jacob Beringer
- a grey metallic mineral consisting of a telluride and sulphide of bismuth. Formula: Bi 2 Te 2 S
C19: from Late Greek tetradumos fourfold, from Greek tetra- + didumos double
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