Tonalite Hand Sample Photos. Click on any photo for a larger image. Some of the larger images may be on other web sites and will open in a new window.

Tonalite Hand Sample
tonhs_001. Tonalite from San Diego County California. The sample contains quartz, hornblende, biotite, and plagioclase. The specimen is about 9 cm in longest dimension. University of North Dakota sample. Photograph by Dexter Perkins and students. To see a zoomable, 3D image of this sample click here.