Concept
Alternate Profiles
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- Preferred Labelskos:prefLabel
anorthositic rock
- URI
- http://resource.geosciml.org/classifier/cgi/lithology/anorthositic_rock ↗Go to the persistent identifier link
- Within Vocab
- Simple Lithology
| Preferred Labelskos:prefLabel | anorthositic rock |
|---|---|
| Definitionskos: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'. |
| Exact MatchexactMatch |
http://inspire.ec.europa.eu/codelist/LithologyValue/anorthositicRock
|
| Narrowernarrower |
anorthosite
foid bearing anorthosite quartz anorthosite |
| Broaderbroader |
phaneritic igneous rock
|
| See AlsoseeAlso | Simple Lithology |
| Notenote | Anorthositic rock term invented to label the combined QAPF fields 10, 10*, and 10', in order to construct hierarchy in this vocabulary. |
| Is Defined ByisDefinedBy | Simple Lithology |