experimental

Entry: anorthositic rock

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

Leucocratic phaneritic crystalline igneous rock consisting essentially of plagioclase, often with small amounts of pyroxene. By definition, colour index M is less than 10, and plagiclase to total feldspar ratio is greater than 0.9. Less than 20 percent quartz and less than 10 percent feldspathoid in the QAPF fraction. QAPF field 10, 10*, and 10'.

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is a Concept
submitted bySophie Chaduteau
accepted on 16 Jul 2026 11:53:11.120

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date accepted 16 Jul 2026 11:53:11.120
date submitted 16 Jul 2026 09:17:51.036
definition
entity anorthositic rock
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item class Concept
label anorthositic rock
notation 3c8c9cf7-a3fe-4ed3-9d69-7b85bf1f4c1f
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 phaneritic igneous rock
definition Leucocratic phaneritic crystalline igneous rock consisting essentially of plagioclase, often with small amounts of pyroxene. By definition, colour index M is less than 10, and plagiclase to total feldspar ratio is greater than 0.9. Less than 20 percent quartz and less than 10 percent feldspathoid in the QAPF fraction. QAPF field 10, 10*, and 10'.
narrower anorthosite | quartz anorthosite | foid bearing anorthosite
notation anorthositicRock
pref label anorthositic rock
type Concept

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