Basalt
Photoswellerr@cochise.edu copyright 2007
amygdaloidal basalt-2
cut slab of silicified basalt
An amygdaloidal basalt is one in with the gas
created vesicles have been filled with a
mineral (amygdules). This amygdaloidal
basalt has also been silicified.

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Just credit R.Weller/Cochise College