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Charnockitic tonalite

A rock subtype
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A pyroxene-bearing tonalite.


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Unique IdentifiersHide

Mindat ID:
48176
Long-form identifier:
mindat:1:1:48176:0

Classification of Charnockitic tonaliteHide

QAPF_P_5.png

Tonalite is in section 5 of the QAPF diagram.

Sub-divisions of Charnockitic tonaliteHide

Mineralogy of Charnockitic tonaliteHide

Essential minerals - these are minerals that are required within the classification of this rock:
AntiperthiteAn intergrowth of orthoclase (often as lamellae) enclosed in a plagioclase host.
MagnetiteFe2+Fe3+2O4
Pyroxene > OrthopyroxeneA petrological term for Orthopyroxene Subgroup.
Silica > QuartzSiO2
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
Mica > BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2

Synonyms of Charnockitic tonaliteHide

Internet Links for Charnockitic tonaliteHide

References for Charnockitic tonaliteHide

Reference List:
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