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Quartzolite
A rock classification type
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About Quartzolite
A rare coarse-grained crystalline igneous rock in which quartz comprises more than 90% of the felsic minerals, and has <90% mafic minerals. It usually includes some feldspars and micas and/or amphiboles, and grades into quartz-rich granitic rocks with increasing feldspars.
In many cases these rocks may be hydrothermally altered granitoids (i.e greisen) rather than true igneous rocks.
In many cases these rocks may be hydrothermally altered granitoids (i.e greisen) rather than true igneous rocks.
Unique Identifiers
Mindat ID:
48123
Long-form identifier:
mindat:1:1:48123:8
Classification of Quartzolite
Rocks in section 1a of the QAPF diagram.
Sub-divisions of Quartzolite
- Quartzolite
Mineralogy of Quartzolite
Essential minerals - these are minerals that are required within the classification of this rock:
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
| Amphibole | A petrological term for Amphibole Supergroup. |
| Feldspar > Alkali Feldspar | A subgroup of the Feldspar Group, poor in calcium, and mostly rich in potassium. |
| Feldspar > Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Mica | A petrological term for Mica Group. |
Common Associates
Associations Based on Photo Data:
| 1 photo of Quartzolite associated with Rickardite | Cu7Te5 |
Internet Links for Quartzolite
mindat.org URL:
https://www.mindat.org/min-48123.html
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Please feel free to link to this page.
Nightmare Claim, Ranchland, Alberta, Canada