FaithfullJohn, 2 months ago

#ThinSectionThursday A gloriously vivid eclogite-facies rock from the Eastern Glenelg gneisses. First image is between crossed polars, with large bright flakes of muscovite mica, with grey quartz +feldspar, plus a zoned yellow-to-purple crystal of epidote in the centre of the view. Second image is same, in plane polarized light. Field of view about 2mm wide. #Geology #Metamorphic #Microscopy

A thin slice of rock viewed using a polarizing microscope, and plane polarized light. Most of the field of view is colourless, with come vague cloudy areas, and some lines. The centre of the view is occupied by an intense clear greyish crystal.

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