홈 > Term: norm system
norm system
A system of classification and nomenclature of igneous rocks based on the norm of each rock. It is used in detailed petrologic studies rather than in ordinary geologic or mining work.
- 품사: noun
- 분야/도메인: 광업
- 카테고리: 일반 광산; Mineral mining
- Government Agency: USBM
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- ed.young
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