A Geoscience Digital Image Library

TitleDiorite gneiss, San Bernardino County, California
DescriptionThe light colored layers in this gneiss are mostly quartz and plagioclase, the dark colored layers get their color from hornblende and sphene (but also contain quartz and plagioclase). This specimen is 9 cm across.
LocationUSA ▹ California ▹ San Bernardino
PhotographerMike Davis. 2001-04-26.
CollectionWard’s University Rock Collection #193.
Key wordsdiorite, gneiss, California
Tech details733 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera, 60mm Nikon AF micro lens.
GeoDIL number431