Gabbrodiorite
A rock subtype
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About Gabbrodiorite
A rock which is mineralogically on the boundary of gabbro and diorite, i.e. their plagioclase is An50.
A term originally proposed for a gabbro in which the pyroxene is altered to uralitic hornblende.
A term originally proposed for a gabbro in which the pyroxene is altered to uralitic hornblende.
Unique Identifiers
Mindat ID:
48276
Long-form identifier:
mindat:1:1:48276:9
Classification of Gabbrodiorite
Gabbro is in section 10 of the QAPF diagram.
Sub-divisions of Gabbrodiorite
- Gabbrodiorite
Mineralogy of Gabbrodiorite
Essential minerals - these are minerals that are required within the classification of this rock:
| Feldspar > Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Mafic minerals | A petrological term for dark, rock-forming minerals rich in magnesium and/or iron. |
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
| Amphibole > Hornblende | AnCa2(Z2+5-mZ3+m)(Si8-(n+m)Al(n+m))(OH,F,Cl)2 |
| Mica > Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Internet Links for Gabbrodiorite
mindat.org URL:
https://www.mindat.org/min-48276.html
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References for Gabbrodiorite
Reference List:
Razan County, Hamadan Province, Iran