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termination
In mineralogy, the end of a crystal, esp. crystal faces that intercept the crystallographic axis, as distinguished from a broken or polished end. Crystals are singly terminated if faces appear on one end as in attached crystals or ones lacking the symmetry to require faces on both ends to complete a crystal form; they are doubly terminated if faces appear on both ends.
- 词性: noun
- 行业/领域: 采矿
- 类别 一般矿业; Mineral mining
- Government Agency: USBM
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创建者
- ed.young
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(Milwaukee, United States)