experimental

Entry: fine grained igneous rock

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

Igneous rock in which the framework of the rock consists of crystals that are too small to determine mineralogy with the unaided eye; framework may include up to 50 percent glass. A significant percentage of the rock by volume may be phenocrysts. Includes rocks that are generally called volcanic rocks.

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is a Concept
submitted bySophie Chaduteau
accepted on 16 Jul 2026 11:53:11.112

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date accepted 16 Jul 2026 11:53:11.112
date submitted 16 Jul 2026 09:17:49.823
definition
entity fine grained igneous rock
source graph graph

item class Concept
label fine grained igneous rock
notation 2faba3c8-78b5-457e-9be1-c51d5502e6fd
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 igneous rock
definition Igneous rock in which the framework of the rock consists of crystals that are too small to determine mineralogy with the unaided eye; framework may include up to 50 percent glass. A significant percentage of the rock by volume may be phenocrysts. Includes rocks that are generally called volcanic rocks.
narrower high magnesium fine grained igneous rock | trachytoid | tephritoid | foiditoid | phonolitoid | andesite
notation fineGrainedIgneousRock
pref label fine grained igneous rock
type Concept