Home > Term: primary gneiss
primary gneiss
A rock that exhibits planar or linear structures characteristic of metamorphic rocks, but lacks observable granulation or recrystallization, and is therefore considered to be of igneous origin.
- Kalbos dalis: noun
- Pramonės šaka / sritis: Mining
- Category: General mining; Mineral mining
- Government Agency: USBM
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- ed.young
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(Milwaukee, United States)