Home > Term: Johannsen's classification
Johannsen's classification
A quantitative mineralogic classification of igneous rocks developed by the petrographer Albert Johannsen (1939). Compare: Johannsen number
- ส่วนหนึ่งของคำพูด: noun
- อุตสาหกรรม/ขอบเขต: Mining
- Category: General mining; Mineral mining
- Government Agency: USBM
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- ed.young
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