experimental

Entry: phyllonite

URI: http://inspire.ec.europa.eu/codelist/LithologyValue/phyllonite

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.

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is a Concept
submitted bySophie Chaduteau
accepted on 16 Jul 2026 11:53:11.513

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date accepted 16 Jul 2026 11:53:11.513
date submitted 16 Jul 2026 09:17:50.427
definition
entity phyllonite
source graph graph

item class Concept
label phyllonite
notation d6732b72-3d51-447b-a716-9185bf078716
register lithology value
status status experimental
submitter
account name s.chaduteau@brgm.fr
name Sophie Chaduteau

type register item
version info 2
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Definition

broader mylonitic rock
definition 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.
notation phyllonite
pref label phyllonite
type Concept

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Has broader concept