![56.0 Glaucophane phyllite. Healdsburg Quadrangle, California. This sample displays classic phyllitic structure with wavy, aphanitic to very fine-grained layers of minerals, in this case, predominantly blue glaucophane and silvery-white white mica (muscovite-paragonite). A few tiny red garnets are present. [Scale shows mm and cm divisions.]](../56.0.JPG)
56.0 Glaucophane phyllite. Healdsburg Quadrangle, California. This sample displays classic phyllitic structure with wavy, aphanitic to very fine-grained layers of minerals, in this case, predominantly blue glaucophane and silvery-white white mica (muscovite-paragonite). A few tiny red garnets are present. [Scale shows mm and cm divisions.]