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Leucogranodiorite

A rock subtype
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A granodiorite with an M' colour index of less than 5.


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Unique IdentifiersHide

Mindat ID:
48167
Long-form identifier:
mindat:1:1:48167:2

Classification of LeucogranodioriteHide

QAPF_P_4.png

Granodiorite is in section 4 of the QAPF diagram.

Mineralogy of LeucogranodioriteHide

Essential minerals - these are minerals that are required within the classification of this rock:
Feldspar > Alkali FeldsparA subgroup of the Feldspar Group, poor in calcium, and mostly rich in potassium.
Feldspar > Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
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
Mica > MuscoviteKAl2(AlSi3O10)(OH)2

Internet Links for LeucogranodioriteHide

References for LeucogranodioriteHide

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