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2 results for “Tetradymite”

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Britannica 11th

Encyclopaedia Britannica · 11th edition

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Tetradymite

Britannica 11th

TETRADYMITE, a mineral consisting of bismuth telluride and sulphide, Bi2Te2S, also known as " telluric bismuth." Sometimes sulphur is absent and the formula is then Bi2Tes; traces of selenium are usually present. Crystals are rhombohedral, but are rarely disti ...

Vol. 26, pp. 670-670 OCR text aligned to scanned pages Relevance 330.0
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Tetrahedrite

Britannica 11th

TETRAHEDRITE, a mineral consisting typically of copper sulph-antimonite, CujSbSj, but often of complex composition. The copper is usually isomorphously replaced by variable amounts of silver, iron, zinc, mercury, lead or cobalt, and the antimony by arsenic or

Vol. 26, pp. 670-671 OCR text aligned to scanned pages Relevance 35.22
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