ホーム > Term: Iceland crystal
Iceland crystal
A transparent, pure, optically clear variety of calcite principally in Iceland in vugs and cavities in basalt; formerly used in optical instruments such as nicol prisms, but has been replaced by artificial materials such as polaroid plates.
- スピーチの一部 noun
- 産業/ドメイン 炭鉱
- カテゴリ 炭鉱全般; Mineral mining
- Government Agency: USBM
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作成者
- ed.young
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(Milwaukee, United States)
