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S-tectonite with muscovite and quartz in thin section
Alkali Feldspar Granite Quartz, alkali feldspar and muscovite.
This rock is predominantly composed of quartz, alkali feldspar, and plagioclase. The alkali feldspar
The plagioclase in this thin section has polysynthetic twinning. The orthopyroxene also has twinning
This rock is composed predominantly of plagioclase feldspar that are large euhedral crystals suggest
Alkali Feldspar crystals are large in this thin section. The alkali feldspar have subhedral crystals
Working on polishing my samples for reflective light microscopy. This sample is a pyroxenite from Ho
Olivine groundmass with an orthopyroxene phenocryst
This thin section shows an amygdule in a sample of amygdaloid basalt. The rock formed due to an erup
Labradorite
Websterite in thin section Clinopyroxene and orthopyroxene with few anhedral plagioclase crystals in
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