- a mineral, bismuth telluride and sulfide, Bi2Te2S, occurring in soft-gray to black foliated masses.
Origin of tetradymite
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Historical Examples of 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
Word Origin for tetradymite
C19: from Late Greek tetradumos fourfold, from Greek tetra- + didumos double
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012