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Apotroctolite

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A term used for a coarse-grained rock consisting essentially of alkali feldspar and olivine, with minor pyroxene, biotite and chlorite.


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Classification of ApotroctoliteHide

Mineralogy of ApotroctoliteHide

Essential minerals - these are minerals that are required within the classification of this rock:
Feldspar > Alkali FeldsparFeldspar Group minerals rich in Potassium or Sodium.
OlivineEquivalent to Fayalite-Forsterite Series; usually a more or less Fe-bearing forsterite.
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
ChloriteA name commonly used for undifferentiated members of the chlorite group.
Mica > BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
PyroxeneA petrological term for Pyroxene Group.

References for ApotroctoliteHide

Reference List:
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Le Maitre (ed.) (2002) Igneous Rocks - A Classification and Glossary of Terms. Cambridge Press

Internet Links for ApotroctoliteHide

 
Mineral and/or Locality  
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