Concept
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- Preferred Labelskos:prefLabel
syenitoid
- URI
- http://resource.geosciml.org/classifier/cgi/lithology/syenitoid ↗Go to the persistent identifier link
- Within Vocab
- Simple Lithology
| Preferred Labelskos:prefLabel | syenitoid |
|---|---|
| Definitionskos:definition | Phaneritic crystalline igneous rock with M less than 90, consisting mainly of alkali feldspar and plagioclase; minor quartz or nepheline may be present, along with pyroxene, amphibole or biotite. Ratio of plagioclase to total feldspar is less than 0.65, quartz forms less than 20 percent of QAPF fraction, and feldspathoid minerals form less than 10 percent of QAPF fraction. Includes rocks classified in QAPF fields 6, 7 and 8 and their subdivisions. |
| Exact MatchexactMatch |
http://inspire.ec.europa.eu/codelist/LithologyValue/syenitoid
|
| Narrowernarrower |
alkali feldspar syenitic rock
monzonitic rock syenitic rock |
| Broaderbroader |
phaneritic igneous rock
|
| See AlsoseeAlso | Simple Lithology |
| Is Defined ByisDefinedBy | Simple Lithology |