Quest for Marble

I spent today rambling around the Sierra Nevada foothills collecting rocks for an educational collection that I'm putting together. The rock that inspired the outing is marble. Unlike some states, California doesn't have a lot of limerocks, although there are bodies of limestone and marble scattered all around. When I first visited the historic mining town of Columbia and its remarkable karrenfeld, I fell in love with its marble. It was a pleasure to visit a roadcut today and harvest a few chunks to help train children in rock identification.

I also acquired specimens of granite, slate, conglomerate and gneiss. My collecting is nearly done. So this was a good day.
_{Marble of the Calaveras Formation — Geology Guide photo}