Item talk:Q41959
From geokb
Mindat Description
A mylonite of phyllitic appearance dominated by platy minerals
Geoscience Ontology Description
Mylonitic rock composed largely of fine-grained mica that imparts a sheen to foliation surfaces; may have flaser lamination, isoclinal folding, and deformed veins, which indicate significant shearing. Macroscopically resembles phyllite, but formed by mechanical degradation of initially coarser rock.
