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Hornblende-biotite granodiorite

A rock subtype
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A granodiorite containing hornblende and biotite.


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Unique IdentifiersHide

Mindat ID:
50514
Long-form identifier:
mindat:1:1:50514:9

Classification of Hornblende-biotite granodioriteHide

Sub-divisions of Hornblende-biotite granodioriteHide

Mineralogy of Hornblende-biotite granodioriteHide

Essential minerals - these are minerals that are required within the classification of this rock:
Amphibole > HornblendeAnCa2(Z2+5-mZ3+m)(Si8-(n+m)Al(n+m))(OH,F,Cl)2
Feldspar > Alkali FeldsparA subgroup of the Feldspar Group, poor in calcium, and mostly rich in potassium.
Mica > BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Silica > QuartzSiO2

Internet Links for Hornblende-biotite granodioriteHide

References for Hornblende-biotite granodioriteHide

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