Schist, Garnet mica, Glenborrodale Scotland.

This is a thin section of a Garnet Schist from Glenborrodale on the Ardnamurchan peninsular. Moine Schists form the bedrock underlying the volcanic rocks. This sample is a remarkably clear and interesting example. Mineralogy is what you would expect, Muscovite and Biotite micas, chlorite, recrystalised quartz and garnets, which are particularly interesting as they contain 3 zones and significant internal texture, including evidence of rotation during growth. Clear, colourful and unusual. Recommended.


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