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bournonite
A mineral of a steel-gray to black color and metallic luster, occurring crystallized, often in twin crystals shaped like cogwheels (wheel ore), also massive. It is a sulphide of antimony, lead, and copper.
- 词性: noun
- 行业/领域: 语言
- 类别 字典
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创建者
- spencer12
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(Germany)