"Tetrahedrite" is a word in ENGLISH

tetrahedrite ENGLISH
Definition:

A sulphide of antimony and copper, with small
quantities of other metals. It is a very common ore of copper, and some
varieties yield a considerable presentage of silver. Called also gray
copper ore, fahlore, and panabase.

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bornite ENGLISH

A valuable ore of copper, containing copper, iron, and sulphur; -- also called purple copper ore (or erubescite), in allusion …

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bournonite ENGLISH

A mineral of a steel-gray to black color and metallic luster, occurring crystallized, often in twin crystals shaped like cogwheels …

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brood ENGLISH

Heavy waste in tin and copper ores.

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chalcopyrite ENGLISH

Copper pyrites, or yellow copper ore; a common ore of copper, containing copper, iron, and sulphur. It occurs massive and …

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cuprite ENGLISH

The red oxide of copper; red copper; an important ore of copper, occurring massive and in isometric crystals.

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magistral ENGLISH

Powdered copper pyrites used in the amalgamation of ores of silver, as at the Spanish mines of Mexico and South …

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matte ENGLISH

A partly reduced copper sulphide, obtained by alternately roasting and melting copper ore in separating the metal from associated iron …

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melaconite ENGLISH

An earthy black oxide of copper, arising from the decomposition of other ores.

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olivenite ENGLISH

An olive-green mineral, a hydrous arseniate of copper; olive ore.

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ore ENGLISH

The native form of a metal, whether free and uncombined, as gold, copper, etc., or combined, as iron, lead, etc. …

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polybasite ENGLISH

An iron-black ore of silver, consisting of silver, sulphur, and antimony, with some copper and arsenic.

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