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- Fine-grained
rock formed by grinding during intense
folding or
faulting
associated with cataclastic metamorphism.
Source: Leet, L. Don. 1982.
Physical Geology, 6th Edition. Englewood Cliffs, NJ: Prentice-Hall
- A compact, chertlike rock without cleavage, but with a streaky or banded
structure, produced by the extreme granulation and shearing of rocks that
have been pulverized and rolled during overthrusting or intense dynamic
metamorphism. Mylonite may also be described as a microbreccia with flow
texture. See also: cataclasite; protomylonite; mylonite gneiss;
ultramylonite. AGI
Source:
Dictionary of Mining, Mineral, and Related Terms
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