Quartz dolerite
A rock subtype
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A variety of dolerite composed mainly of plagioclase and pyroxenes with interstitial quartz or micropegmatite. The rock has tholeiitic affinities and its pyroxenes are usually subcalcic augite accompanied by pigeonite or orthopyroxene.
Unique Identifiers
Mindat ID:
50617
Long-form identifier:
mindat:1:1:50617:5
GUID
(UUID V4):
(UUID V4):
735680c4-fe85-40a0-8d42-54082f36c717
Classification of Quartz dolerite
- Rock
- Igneous rock
- Normal crystalline igneous rock
- Fine-grained ("volcanic") normal crystalline igneous rock
- Dolerite
- Quartz dolerite
- Dolerite
- Dolerite
- Quartz dolerite
- Fine-grained ("volcanic") normal crystalline igneous rock
- Normal crystalline igneous rock
- Igneous rock
Mineralogy of Quartz dolerite
Essential minerals - these are minerals that are required within the classification of this rock:
Feldspar > Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Pyroxene | A petrological term for Pyroxene Group. |
Silica > Quartz | SiO2 |
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Pyroxene > Clinopyroxene > Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Pyroxene > Clinopyroxene > Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Pyroxene > Orthopyroxene | A petrological term for Orthopyroxene Subgroup. |
Internet Links for Quartz dolerite
mindat.org URL:
https://www.mindat.org/min-50617.html
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