Gneiss is a common metamorphic rock. This specimen appears to be primarily composed of quartz, feldspar, and biotite, with almandine garnet inclusions.
Garnet-bearing Gneiss
Rocks I've Found on the Beach
Gneiss is a common metamorphic rock. This specimen appears to be primarily composed of quartz, feldspar, and biotite, with almandine garnet inclusions.