plagioclase मीनिंग इन हिंदी

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The main minerals are quartz, perthitic orthoclase, and plagioclase.
A greater amount of plagioclase would designate the rock as tonalite.
At greater depth plagioclase is unstable and is replaced by spinel.
Myrmekite is a globular or bulbous symplectite of quartz in plagioclase.
Microprobe analysis showed that the plagioclase was very calcium-rich.
Phenocrysts in the postglacial rocks are biotite, plagioclase and quartz.
In the example of plagioclase, there are three cases of substitution.
It can be found in igneous rocks containing potassium feldspar and plagioclase.
The mineral assemblage is typically dominated by plagioclase plus pyroxene or hornblende.
It is black with phenocrysts of plagioclase in a medium grained lamination.

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