Colorado Mineral Society Patch

Last Chance to Sign up for the April 2017 Gem Identification Course!!!

There is still availability in the Gem Identification Course that will be held every Monday night this April. Don’t miss it! Cost is only $35 per person for 4 fun-filled, informative classes! Please ASAP to express interest and to confirm your spot in the class.

Dates: April 3, 10, 17 and 24.
Location: School of Mines, General Research Laboratory (GRL) building, 1310 Maple St., Golden
Time: 6:30 pm to 8:30 pm
Age – Minimum age 16
Per person Cost – $35, CMS Members ONLY (Total cost is $70 – CMS will cover other $35/person)

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

2017 Field Trip

Available at the May 5th Meeting

American Federation of
Mineralogical Societies

Rocky Mountain Federation of Mineralogical Societies

Welcome to the Colorado Mineral Society

Celebrating our 81st Year!
1936 - 2017

80th Anniversary Party
- CMS 80th Anniversary Party -

Next meeting:
Friday, April 7th, 2017
CMS General Membership Meeting
at St. Paul's Episcopal Church, Lakewood
7:30 pm

Larry Havens
Pyrite: "All that Glitters . . ."

Pyrite has proved to be a utilitarian mineral for mankind, serving him in many an imaginative way, increasing in sophistication as he developed his arsenal of scientific tools. Probably the earliest application of pyrite was as a fire-starter. No smart, early human would go anywhere without his kit of pyrite and tinder.

A logical adaptation of the "pyrite makes sparks" technology to the human tendency to apply benign processes to the tools of war is seen in the evolution of firearms. In the 1500's the clumsy matchlock firearm gave way to the "wheel lock" mechanism. In simple terms, a piece of pyrite was levered against a spinning, grooved wheel that shot sparks into a pan of powder that, in turn, touched off the main charge. Finally, a weapon that could be concealed under clothing. This leap forward in firearm design led to the first gun control laws. Fear of assassination among the nobles of the day led to the wheel lock being banned throughout the Holy Roman Empire. Fortunately for the nobles, the wheel lock was too expensive to manufacture in any practical numbers.

Pyrite cubic crystals on marl from Navajún, La Rioja, Spain

Pyrite cubic crystals on marl from Navajún, La Rioja, Spain - Photo by Carles Millan

More info in the April 2017 CMS Newsletter Coming Soon
Kids, guests and visitors are always welcome
Map to St. Paul's Church

Colorado Mineral Society's
Silent and Verbal Auction
Saturday - May 6, 2017 - 11am - 2:45pm
Minerals, fossils, faceted stones, lapidary pieces, books, jewelry, and fluorescent minerals. Door prizes every half hour, raffle at 2:45pm. Special verbal auction at 1:00pm of museum quality specimens donated by special dealers. Abundant parking, refreshments, and easy handicap access. A few auction tables reserved for only children to bid on. Location: Holy Shepherd Lutheran Church, 920 Kipling Street (3 blocks north of West 6th Ave.) Lakewood, CO 80215. Checkout will begin at 2:45pm (Cash or Check Only)
**A special invitation is extended to non-CMS members to participate in this auction as sellers and buyers**
Limit of sales to three flats of materials. Sellers can get copies of bidding slips on our club website (fillable and printable pdf file): Bid Slips
Checkout will be by bidder number, so contact Leslie Osgood at 303- 986-4488 for a bidder number and/or seller letter. Any questions about the auction should be directed to Ben Geller by phone at 303-550-5993 or by email at

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