The Mother Lode Mineral Society

MLMS Logo

Our Club

We are a 501(c)(3) educational non-profit organization. Established 1936

Our club is devoted to educating and enlightening its members and the public in many areas of the earth sciences and lapidary arts. The club participates in, teaches and promotes classes at the Modesto Junior College in beginning and advanced lapidary, beginning and advanced jewelry making, lost wax casting, stone setting, wire wrapping, beading, gem carving, intarsia and faceting.

Additionally we have programs at our club meetings on fossils, geology and florescent minerals for our junior and regular members as well as participating in regularly scheduled field trips to seek out and collect rocks, minerals and fossils.

Club Meetings

Next Board Meeting

February 1, 2026 12:30PM

Next General Meeting

Juniors Meeting Begins
February 1, 2026 1:30PM

General Meeting Begins
February 1, 2026 2:30PM

General and Board Meeting Location

Tuolumne River Lodge
2429 River Rd., Modesto, CA 95351
Web: TuolumneRiverLodge.com

ANNUAL SHOW
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JUNIOR ROCKHOUNDS
CLASSES
PRESENTATIONS
SHOWS & EVENTS

The Mother Lode Mineral Society is one of the premier gem and mineral clubs in Central California with a prize winning monthly publication called the Ghost Sheet and one of the largest annual Gem, Mineral and Fossil shows in the state.

Rockhounding can take you places.

awesome rock towers

awesome rock towers

star trek

star trek?

ancient petroglyphs

ancient petroglyphs

Where you can make amazing finds.

clear obsidian

clear obsidian

priday plume

priday plume

oregon rocks!

oregon rocks!

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