Syenitoid
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A coarse grained felsic igneous rock having an alkali-feldspar/plagioclase ratio from 0.9-0.35 and 0-20% quartz.
Classification of Syenitoid
Rock ➔ Igneous rock ➔ Normal crystalline igneous rock ➔ Coarse-grained ("plutonic") crystalline igneous rock ➔ Syenitoid
Rocks in sections 6,6*,6',7,7*,7',8,8* and 8' of the QAPF diagram.
Sub-divisions of Syenitoid
Mineralogy of Syenitoid
Essential minerals - these are minerals that are required within the classification of this rock:
| Feldspar > Alkali Feldspar | Feldspar Group minerals rich in Potassium or Sodium. |
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
| Amphibole > Hornblende | An informal name for dark green to black amphiboles, mostly ferro-hornblende or ... |
| Mica > Biotite | A series or subgroup of the Mica Group. |
Pronounciation of Syenitoid
Pronounciation:
| Play | Recorded by | Country |
|---|---|---|
| Jolyon & Katya Ralph | United Kingdom |
Synonyms of Syenitoid
Other Language Names for Syenitoid
Internet Links for Syenitoid
mindat.org URL:
https://www.mindat.org/min-48178.html
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Search Engines:
Sagåsen Quarry, Sagåsen, Mørje, Porsgrunn, Telemark, Norway