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Britannica 11th

Encyclopaedia Britannica · 11th edition

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Erubescite

Britannica 11th

ERUBESCITE, a native copper-iron sulphide, Cu4FeS4, of importance as an ore of copper. It crystallizes in the cubic system, the usual form being that of interpenetrating cubes twinned on an octahedral plane. The faces are usually curved and rough, and the crys ...

Vol. 9, pp. 757-757 OCR text aligned to scanned pages Relevance 330.0

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