TrekGEO > Mineral Trail > Tokai region > Shizuoka pref. > Orthoclase

Japanese page



Hama, Kawazu city, Kamo county, Shizuoka pref., Japan


Width of the center crystal: 5 mm. Phenocrysts of orthoclase. The opaque white tabular crystals are orthoclase. The translucent gray grains are hexagonal bipyramidal crystals of Beta-quartz. The massive parts are a groundmass.

Recovered from a weathered surface of rhyolite erupted from a volcano of an island arc. Formed in the late Miocene (7 Ma).

Orthoclase from this location was described in 1979.

Other localities


Copyright (c) 2017 NariNari, All Rights Reserved.