Travertine
Travertine from Clear Lake, California
A form of calcium carbonate (CaCO3)
This specimen has fluorescent hydro-carbons within the limestone. It's color-banded crystalline help us to see how sedimentary rocks are formed in layers. The texture or patterns are beautiful. Travertine becomes colored by the minerals in the water and by biological action. Travertine from this region is quarried for use as decorative stone.
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