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Rikotite

A rock subtype
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A local name for a melanocratic banded variety of diorite composed mainly of clinopyroxene and anorthoclase with minor andesine, hornblende, biotite and opaques.


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Unique IdentifiersHide

Mindat ID:
48234
Long-form identifier:
mindat:1:1:48234:3

Classification of RikotiteHide

QAPF_P_10.png

Diorite is in section 10 of the QAPF diagram.

Mineralogy of RikotiteHide

Essential minerals - these are minerals that are required within the classification of this rock:
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Amphibole > HornblendeAnCa2(Z2+5-mZ3+m)(Si8-(n+m)Al(n+m))(OH,F,Cl)2
Feldspar > Plagioclase > Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Mica > BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2

Internet Links for RikotiteHide

References for RikotiteHide

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