Colorado Mineral Society Patch

American Federation of
Mineralogical Societies

Rocky Mountain Federation of Mineralogical Societies

CMS Members Jeff Self and Donna Ware featured on Colorado Public Radio's “Colorado Matters”

CMS members Jeff Self and Donna Ware were featured in an interview on the “Colorado Matters” program on Colorado Public Radio. The recorded interview with Ryan Warner can be listened to online via the CPR website at the link below, along with a story and photos about them.

Click Here for Interview

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A Visitor’s Guide to
Colorado Gemstones

On International Gem Society's
Website mentions the
Colorado Mineral Society

Click here to read

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COVID-19 Update: Please do not attend field trips, meetings or events if you are feelng ill or were exposed to someone who tested positive within 14 days of the trip. We will observe physical distancing on all CMS sanctioned events or trips.

Welcome to the Colorado Mineral Society

Celebrating our 88th Year!
1936 - 2024

Colorado Mineral Society
May 2024 Meeting and Presentation
Friday, May 3rd, 2024 at 7:00pm

Colorado Mineral Society General Meeting, Friday, May 3, 2024 7:00pm

Please join us Friday, May 3rd at 7:00pm at St. Paul’s Episcopal Church, 9200 W 10th Ave, Lakewood, CO 80215 (10th and Garrison) map. We will be discussing the upcoming 2024 field trips, including logistics and specimen samples of what you can find on the trips. If you are new to rockhounding, we will go over basic tools that are needed on a field trip. A field trip list is attached (click on link to view and download). If you are coming to the meeting tomorrow night, please print out the list and bring with you. There will be some extra copies of the list at the meeting. There are still some trip dates that need to be finalized and they are in italics. Field trips will be posted on the CMS website starting Sunday morning (5/5/2024) at 10am for May and June trips.

During the meeting tomorrow night, there will be a raffle of 6 nice specimens at 8:30pm with $1 tickets (cash only) that benefit the CMS education program. We will also have a rock sale with specimens, gems, and faceting material that was donated to the club (cash, check, or credit card accepted).

This is also a reminder that the CMS Annual Auction is Satruday, May 4th at the Wheatridge Methoist Church at Wadsworth and 38th St. The silent auction starts at 11:00am. A verbal auction starts at 1:30pm and will include the specimens, gemstones, and a fossil shown in the attached file (click on link to view and download).


Amber Brenzikofer
CMS President

Colorado Mineral Society's
Silent and Verbal Auction
Saturday May 4, 2024
11:00am to 4:30pm

Minerals, fossils, faceted stones, lapidary materials, books,
jewelry, and fluorescent minerals

° Verbal auction at 1:30 pm of museum quality specimens donated by supporters
° One auction table reserved for only children to bid on
° Special fluorescent minerals room
° Free parking and easy handicap access
° Limited refreshments so, if needed, bring your own lunch
° Cash, Check, and Credit Card will all be accepted at the auction

Wheat Ridge United Methodist Church,
7530 W. 38th Ave, Wheat Ridge CO.

Directions: from Wadsworth head east on 38th to first street (Vance St).
Turn right onto Vance St; parking is behind the building or on Vance St.

11:00am to 4:30pm
Checkout will begin at 3:00pm

**A special invitation is extended to non-CMS members to participate as sellers and buyers**

Sellers Setup:
Starts at 10:00am (must go through check in desk, so arrive early)

Note for sellers:

Limit of sales to three flats of materials.
Sellers can get copies of bidding slips on our club website:

Contact Leslie Osgood, for a bidder number and/or seller letter, preferably by email at or at 303-986-4488 (leave a message and she will call you back)

General questions about the auction should be directed to Lesley Sebol by email at:

Entire site contents © 2024 Colorado Mineral Society, a Colorado non-profit, educational organization

To attend field trips and join the Colorado Mineral Society
please go to the
New Membership and Fieldtrip Signup Page below
and create your account online

Click here for the user guide. ~ * ~ Click here for the Introduction to the new site.

You must be a member to attend any fieldtrips and you can join or renew at the link above.


Amber, CMS President

2023 Filed Trip List

*Updated 5/3/2024


Entire site contents © 2024 Colorado Mineral Society, a Colorado non-profit, educational organization