• 3D Virtual Exhibit

    This is a 3d exhbit giving an overview of the areas the museum covers. Not everything you see here can be found at the museum, though most of it can, but it's an opportunity to take some of our ideas out of our heads, and show what we'd like to do.

    Please feel free to run the quick Guided Tour, and then wander around the exhibit on  your own.

    There is not yet any sound activated, but that and other surprises are coming.



  • Exhibits - Arizona Minerals

    Wulfenite is the State Mineral of Arizona

    Of course we feature minerals of Arizona!

    In addition to display cases of Arizona specimens, we have others spread throughout the Museum.


    Antlerite, Cuprite, Diabase, Hemimorphite, all from Arizona

    Please Donate Today!

  • Meetings List

    The Pinal County Gem And Mineral Society meets every 3rd Wednesday at the Pinal Geology and Mineral Museum, 351 N Arizona Blvd, Coolidge, AZ, September through May!

    Everyone is welcome!!

    Please see our channel for past meetings. Previous meetings remain up on YouTube. Have a talk to give? Contact This email address is being protected from spambots. You need JavaScript enabled to view it.

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

    Public Welcome, membership is not required to attend meetings!

    Doors open at 6:30 pm, meeting starts 7:00pm

    2022-2023 Meeting Schedule (in Person unless otherwise noted - Masks are recommended)

    • September 21: Dr Susan Leib will present an introduction to the Alfie Norville Gem & Mineral Museum Collection
    • October 19: David Tews, Geology of Tucson Mtns, Bob Hole, Geological Destinations in AZ
    • November 16: Mesa Community College, Earthquakes
    • December 21: Dr Robert McCord, Late Cretaceous of Arizona
    • January 18: David Tews, Trailside Geology in Southern AZ 
    • February 15: Mike Henry, Mining Operations
    • March 15: Sophie Dessart, Introduction to Florence Copper
    • April 19: Ray Grant, Australian Opal
    • May 17: TBA

    2021-2022 Meeting Schedule (TBA & on YouTube unless otherwise noted)

    This year we have several great speakers lined up, but we're not set on dates yet. Please check back or watch for announcements on our social media accounts.

  • Turquoise of Tonapah, Nevada

    A gift of the Otteson family of Tonapah, Nevada, this group of Turquoise specimens along with some Dolomite are from their family claims near Tonapah, Nye County, Nevada.

    Turquoise has been prized for thousands of years by cultures around the world. It was one of the first gemstones to be mined. It has been mined and used in Egypt for at least 5,000 years, and in Iran for over 2,000 years.

    Turquoise is the State Gem of Arizona.

    Mineral Properties:

    • Formula: CuAl₆(PO₄)₄(OH)₈·4H₂O
    • Color: green, blue, “turquoise”
    • Luster: waxy
    • Crystal System: Triclinic
    • Hardness: 5-6


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