![11.0 Gabbro. Middletown, California. This rock is a medium-grained gabbro consisting of white to green and dark greenish gray plagioclase feldspar with interspersed dark green to black augite and trace amounts of tiny pyrite grains. [Scale is standard GSA scale with cm divisions.]](../11.0.JPG)
11.0 Gabbro. Middletown, California. This rock is a medium-grained gabbro consisting of white to green and dark greenish gray plagioclase feldspar with interspersed dark green to black augite and trace amounts of tiny pyrite grains. [Scale is standard GSA scale with cm divisions.]