![11.1 Gabbro. Bishops Castle, Shropshire, England. Brownish gray plagioclase surrounds dark green augite and minor Fe-bearing oxide minerals. Sample courtesy of Sonoma State University Geology Department. [Scale is standard GSA scale with cm divisions.]](../11.1.JPG)
11.1 Gabbro. Bishops Castle, Shropshire, England. Brownish gray plagioclase surrounds dark green augite and minor Fe-bearing oxide minerals. Sample courtesy of Sonoma State University Geology Department. [Scale is standard GSA scale with cm divisions.]