Colorado Mineral Society Patch


Member
American Federation of
Mineralogical Societies



www.amfed.org

Member
Rocky Mountain Federation of Mineralogical Societies




www.rmfms.org

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
Article

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


Click here to read


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


Welcome to the Colorado Mineral Society

Celebrating our 89th Year!
1936 - 2025


Colorado Mineral Society
October 2025 Meeting and Presentation
Friday, October 3, 2025 at 7:00pm


The meeting starts at 7:00pm at St. Paul’s Episcopal Church, 9200 W 10th Ave, Lakewood, CO 80215 (10th and Garrison). We will be celebrating the founding of CMS with a cake and refreshments. The first CMS regular meeting was October 9, 1936 (89 years ago!) with 14 founding members from four cities. Feel free to bring snacks to share with the attendees. Dan Mira will be talking about minerals of Romania (see abstract below).

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 of very affordable mineral specimens, gems, cabbing slabs, and faceting rough material that has been donated to the club (cash, check, or credit card accepted). Visitors and guests are welcome to attend the meeting and presentation.

The fieldtrip website link is: https://fieldtrips.coloradomineralsociety.org/. The 2025 Field Trip list is below.
If you need to renew your 2025 membership, please do it online to make sure you can sign up for the field trip when they are posted. Click on Field Trips at the top menu.

You have to be a CMS member to go on our fieldtrips.


Minerals of Romania, Maramures County – by Dan Mira

Maramures (pronounced Maramuresh) is a Romanian county in northern Transilvania, near the border with the modern Ukraine, with a rich mining history. The first records and archeological finds prove mining activities existed in this region before Dacia (the country name before the Roman conquest) was conquered by the Romans. A lot of gold and silver artifacts showing the same characteristics as the ones discovered locally were discovered in other parts of Dacia, proving the quality of the artifacts crafted locally was known and appreciated in a wide area. Gold, silver, lead and zinc were commonly extracted from the area. Manganese and barium were also mentioned since the 1300s. High quality specimens from the area filled collections and European museums since late 19th century, however, the two world wars and the following 50 years of communist regime kept the specimens outside of the reach of collectors (especially in US). The mines that are most familiar to collectors are located in relatively small area around Baia Mare (the Maramures county seat): Cavnic, Baia Sprie, Baiut, Herja and Rosia Poieni. Most sought after specimens include rhodochrosite, barite, black-and-white calcite spheres and stibnite.


Dan’s talk will describe the geology, history, minerals and the culture of this mining area. In addition, Dan participated in the 3rd Cavnic Gem and Mineral Show in 2025, which included a field trip to two local (closed) mines. Dan will also be talking about specimens that developed in a spherical shape (spherulites) that are so abundant in the area. Dan’s personal collection of minerals from Maramures will be displayed, including new additions from this year’s trip to Cavnic and a few specimens self-collected during the field trip into local mines.
Dan's Bio

Dan Mira is a Civil Engineer and passionate rockhound. Born in Romania, Dan developed his interest in minerals from his childhood and spent countless hours inside the Bucharest’s National Geological Museum. He started collecting mineral specimens only after moving to Denver a few years ago. Despite the distance from Romania, he kept permanent interest in Romania’s minerals and geology, and continuous connection with the Romanian rockhounding community. 

 

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

https://fieldtrips.coloradomineralsociety.org

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.

Thanks!

Amber, CMS President

 

2025 Field Trip List

2023 Filed Trip List

Updated 5/5/2025

 

Entire site contents © 2025 Colorado Mineral Society, a Colorado non-profit, educational organization