OFFICIAL WEBSITE FOR THE
CONTRA COSTA MINERAL & GEM SOCIETY
Serving Contra Costa County
of Northern California Since 1950
ABOUT THE CONTRA COSTA MINERAL & GEM SOCIETY
The Contra Costa Mineral & Gem Society is a 501(c)(3) nonprofit organization that is dedicated to supporting geology, gemology, and mineralogy hobby collecting through the promotion of recreational and educational experiences such as prospecting, mining, and the use of public and private lands to our members.
Our organization’s mission is to promote popular interest and education in the earth sciences, including geology, mineralogy, paleontology, lapidary arts, and other related subjects. We strive to foster fellowship among individuals, groups, and associations with similar interests across our local community and beyond.
CLUB MEETINGS ARE THE SECOND MONDAY EVERY MONTH AT 7PM AT ENDEAVOR HALL IN CLAYTON (SEE CALENDAR FOR DETAILS) - VISITORS ARE WELCOME!
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Serving the Greater Contra Costa County of Northern California Since 1950
OTHER ORGANIZATIONS THAT ROCK OUR WORLD
American Lands
Access Association
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Upcoming Shows
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Upcoming Field Trips
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UPCOMING EVENTS
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Visitors Are Welcome!