Metamorphic rock staurolite-garnet schist. Photomicrograph with crossed polars. The width of the view is approximately 3 mm. Main minerals are staurolite (blue), sericie (fine muscovite flakes that cover other minerals making them fuzzy) garnet (upper left corner) and graphite (black).
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Siim Sepp, 2007 Metamorphic rock staurolite-garnet schist. Photomicrograph with plane crossed polars. The width of the view is approximately 3 mm. Main minerals are staurolite (blue), sericie (fine muscovite flakes that cover other minerals