grey copper
(US gray copper) Mining
noun
(More fully grey copper ore) a grey sulphide ore of copper; (in later use) specifically = tetrahedrite.
Origin
Late 16th century.
| 单词 | grey copper |
| 释义 | grey copper(US gray copper) Mining noun (More fully grey copper ore) a grey sulphide ore of copper; (in later use) specifically = tetrahedrite. Origin |
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