last edited: 5/15/13 number of photos: 11
Hornfels is a fine-grained non-foliated metamorphic rock.
It is a baked rock. If formed from basalt or dark shale, it
will be almost black in color.
hornfels: A B C D E F G H
hornfels from California: 1 2 3
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Just credit photos to R.Weller/Cochise College.