Silent Auction

The Pinal County Geology and Mineral Society meets every 3rd Wednesday at the Pinal Geology and Mineral Museum in the Artisian Village, Coolidge, AZ, September through May!


PCGMS holds nine informational and fun meetings a year, and usually has several field trips to collecting localities and other geological sites of interest. Nine email newsletters are sent out annually, and the Society also acts as a Friends organization for the Pinal Geology and Mineral Museum.

It is a place where you can meet other rockhounds of all levels of experience, from those of us just starting our interest in rocks to professional geologists.

Recent meeting topics have included an overview of Meteor Crator, near Winslow, AZ, dinosaurs and other fossils, and a travelogue of worldwide geological travels.

Everyone is welcome to join us in our Facebook Group.

Founding and current President: Dr Ray Grant.


Meeting presentations are livestreamed on YouTube until further notice.

Livestream opens at 6:30pm. Meeting begins at 7:00pm.

Meetings consist of a small amount of business, , and a speaker or presentation. Meetings usually last about one hour.

Location: Meetings are held on the Pinal Geology Museum YouTube Channel. No sign in is requred to view the meeting. Comments/Questions for the speaker can be made by anyone with a free Google/YouTube account. When possible, the meeting presentations remain up on the YouTube channel.

 Everyone is welcome!!

Adults, families, children are all invited. Begining hobbyists and seasoned professionals should find something of interest.

Membership is not required to attend meetings!

2020/2021 Meeting List

If you'd like to join the society, please fill out the form linked below and mail it or drop it off at the Coolidge Chamber of Commerce (351 N Arizona Blvd, Coolidge).

(Download Membership Form PDF)


PGMS MembershipApp