Salton Sea
| Name: | Obsidian Boulders |
|---|---|
| Date: | 8/27/2006 |
| Location: | Obsidian Butte |
Volcanic glass, or obsidian, technically, not considered a mineral as it has no crystal lattice structure. This is due to rapid cooling of the highly silicate magma. The banding of the rock is not sedimentary in nature, rather it is due to frothing of the magma as it was flowing and cooled. This extrusive igneous rock is abundant in this region, in fact much of the trails, and roads are atop obsidian bedrock.
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