Biotite-feldspar porphyry
A rock subtype
This page is currently not sponsored. Click here to sponsor this page.
Biotite-feldspar porphyry
Unique Identifiers
Mindat ID:
48435
Long-form identifier:
mindat:1:1:48435:0
GUID
(UUID V4):
(UUID V4):
2145bd24-95a6-4352-9d17-e6b32f90b65e
Classification of Biotite-feldspar porphyry
- Rock
- Igneous rock
- Normal crystalline igneous rock
- Fine-grained ("volcanic") normal crystalline igneous rock
- Porphyry
- Biotite-feldspar porphyry
- Porphyry
- Porphyry
- Biotite-feldspar porphyry
- Fine-grained ("volcanic") normal crystalline igneous rock
- Normal crystalline igneous rock
- Igneous rock
Mineralogy of Biotite-feldspar porphyry
Essential minerals - these are minerals that are required within the classification of this rock:
| Feldspar | A petrological term for Feldspar Group. |
| Mica > Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
| Amphibole > Hornblende | An informal name for dark green to black amphiboles, mostly ferro-hornblende or ... |
| Silica > Quartz | SiO2 |
Internet Links for Biotite-feldspar porphyry
mindat.org URL:
https://www.mindat.org/min-48435.html
Please feel free to link to this page.
Please feel free to link to this page.
