![6.2 Biotite-hornblende granodiorite. Slightly weathered. Carson-Iceberg Wilderness near Mosquito Lake, California. Minerals the same as in 6.1, but alkali feldspars are smaller and a clearly zoned, large, plagioclase feldspar grain is present in the lower left center. Equant biotite and diamond-shaped to rectangular hornblendes are subequal. Orange stain on left is limonite or goethite. [Scale is standard GSA scale with cm divisions.]](../6.2.JPG)
6.2 Biotite-hornblende granodiorite. Slightly weathered. Carson-Iceberg Wilderness near Mosquito Lake, California. Minerals the same as in 6.1, but alkali feldspars are smaller and a clearly zoned, large, plagioclase feldspar grain is present in the lower left center. Equant biotite and diamond-shaped to rectangular hornblendes are subequal. Orange stain on left is limonite or goethite. [Scale is standard GSA scale with cm divisions.]