Close-up of the patterns and structural detail in a polished slab of Sonoran dendritic rhyolite; an igneous volcanic rock from...

Sonoran Dendritic Rhyolite 2

Sonora, Mexico

Close-up of the patterns and structural detail in a polished slab of Sonoran dendritic rhyolite; an igneous volcanic rock from Mexico.

Image #4433

Photo © copyright by Mark Windom.

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