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Rocks and Minerals seen through the Petrological Microscope
Normal Light
Polarised Light
(Scale: Each image approx. 0.75 mm across)
Quartz, Feldspar, Biotite and Myrmekite. Locality unknown.Mostly Quartz. Scattered brown Biotite Mica. Twinned Feldspar at bottom and one showing Myrmekitic texture (exsolved Quartz lamellae) at right.
