Ornöite
A rock subtype
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A local name for a variety of diorite consisting essentially of sodic plagioclase with minor hornblende, microcline, biotite and quartz.
Unique Identifiers
Mindat ID:
50533
Long-form identifier:
mindat:1:1:50533:4
GUID
(UUID V4):
(UUID V4):
b0d79fb8-b5c6-4332-abf8-3b9f86117863
Classification of Ornöite
Diorite is in section 10 of the QAPF diagram.
Mineralogy of Ornöite
Essential minerals - these are minerals that are required within the classification of this rock:
Amphibole > Hornblende | An informal name for dark green to black amphiboles, mostly ferro-hornblende or ... |
Feldspar > Alkali Feldspar > Microcline | K(AlSi3O8) |
Mica > Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
Silica > Quartz | SiO2 |
Sodic plagioclase | A petrological term for plagioclase feldspars dominant in sodium. |
References for Ornöite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Le Maitre (ed.) (2002) Igneous Rocks - A Classification and Glossary of Terms. Cambridge Press
Internet Links for Ornöite
mindat.org URL:
https://www.mindat.org/min-50533.html
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