Chugach Gem and Mineral Society

Chugach Gem and Mineral Society We are an Anchorage Local Society for rock collectors and geologists alike. We have awarded scholarships to many students and have funded many events.

CGMS provides opportunities for learning more about the Earth Sciences, educational opportunities for students, and promotes social enjoyment of the hobby of "rockhounding." We go on field trips across Alaska. Members welcome on any trip. If you are not yet a member there is a small membership fee due prior to going on any trip. ($20 per individual and $25 for family per year). We have two meeting

a month, bring a rock for show and tell. We generally have a presentation or speaker at each meeting. We invite you to bring your family.

First field-trip of the season: Matanuska River, May 9. About two-dozen hardy folks attended from the combined CGMS and ...
05/10/2026

First field-trip of the season: Matanuska River, May 9. About two-dozen hardy folks attended from the combined CGMS and Mat-Su rock clubs.

With Dr. Patrick Druckenmiller, Alaska dinosaur expert from UAF as our guest speaker, member interest resulted in a mode...
04/24/2026

With Dr. Patrick Druckenmiller, Alaska dinosaur expert from UAF as our guest speaker, member interest resulted in a modern-day record sixty-five attendees at our potluck social last night! He taught about fossils to the R.O.C.K.S. kids before dinner, then gave us all an excellent presentation on the world's northernmost dinosaurs. He continues to lead research expeditions to the dino beds along the Colville River and Denali National Park.

04/10/2026
What's directly on the opposite side of the Earth? Word of the month "antipode".
03/30/2026

What's directly on the opposite side of the Earth? Word of the month "antipode".

The location on the other side of the world from the Yellowstone Caldera is in the southern Indian Ocean—a site near the Kerguelen Plateau, which formed about 130 million years ago and still hosts a few very remote and active volcanoes.

Our latest 2026 trip list. Must be a member of Chugach Gem & Mineral Society, cgmsak.org
03/03/2026

Our latest 2026 trip list. Must be a member of Chugach Gem & Mineral Society, cgmsak.org

04/30/2025
A couple dozen CGMS members toured the Alaska Geologic Materials Center April 22nd. It's quite an impressive facility! M...
04/24/2025

A couple dozen CGMS members toured the Alaska Geologic Materials Center April 22nd. It's quite an impressive facility! More info at: https://dggs.alaska.gov/gmc/index.html
Photos by Phillip & Greg

Here's the first draft of the upcoming 2025 field-trip season. Some changes are likely. Chugach Gem & Mineral Society (C...
02/09/2025

Here's the first draft of the upcoming 2025 field-trip season. Some changes are likely. Chugach Gem & Mineral Society (CGMS) membership is required. Attendees acknowledge that there are inherent hazards involved with our field trips, and agree to hold harmless the trip leaders and the CGMS board for any accidents/incidents beyond their control.

01/26/2025

Next to the current town of the same name, the old Brenda Ghost Town along Hwy 60 is protected by serious fencing. With all the old stuff in plain sight, it's an understandable addition!

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P. O. Box 140112
Anchorage, AK
99514

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