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Biotite-hornblende gneiss

A rock subtype
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A gneiss containing biotite and hornblende.


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Unique IdentifiersHide

Mindat ID:
52699
Long-form identifier:
mindat:1:1:52699:3

Classification of Biotite-hornblende gneissHide

Mineralogy of Biotite-hornblende gneissHide

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
Mica > BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2

Internet Links for Biotite-hornblende gneissHide

References for Biotite-hornblende gneissHide

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