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chrome chert
A variety of chert that has replaced the silicate minerals of a chromite peridotite, the more resistant chromite grains remaining unaltered in the siliceous matrix.
- 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
- 100% positive feedback
(Milwaukee, United States)