Mylonite
A rock classification type
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About Mylonite
A cohesive fault-rock which is characterised by tectonic reduction of grain size and recrystallisation in shear zones, and commonly contains lensoidal to rounded porphyroclasts and lithic fragments of similar composition to minerals in the matrix.
A compact, chert-like rock without strong cleavage, but with a streaky or banded structure, produced by the extreme granulation, shearing and recrystallisation 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
A compact, chert-like rock without strong cleavage, but with a streaky or banded structure, produced by the extreme granulation, shearing and recrystallisation 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
Unique Identifiers
Mindat ID:
48668
Long-form identifier:
mindat:1:1:48668:6
GUID
(UUID V4):
(UUID V4):
a97cab70-1aa7-4262-80c6-f6bcc632fa21
Classification of Mylonite
Sub-divisions of Mylonite
Synonyms of Mylonite
Common Associates
Associated Minerals Based on Photo Data:
Internet Links for Mylonite
mindat.org URL:
https://www.mindat.org/min-48668.html
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Cap de Creus, Cadaqués, Girona, Catalonia, Spain