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Member
American Federation of
Mineralogical Societies
www.amfed.org
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Member
Rocky Mountain Federation of Mineralogical Societies
www.rmfms.org
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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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site require Adobe Acrobat Reader (free)
Click
here to download
Make sure you
uncheck the option offers if you already have antivirus protection
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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 90th Year!
1936 - 2026
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Colorado
Mineral Society
January 2026 Meeting and Presentation
Friday, January 2nd, 2026 at 7:00pm
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The
meeting starts at 7:00pm at St. Paul’s Episcopal
Church, 9200 W 10th Ave, Lakewood, CO 80215 (10th
and Garrison). Feel free to bring snacks to share
with the attendees. Mark Jacobson will be talking
about gem pocket pegmatites of Maine (see abstract
below), which he will be presenting in Tucson.
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.
Happy New Year!!
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Gem pocket (miarolitic) pegmatites of Maine
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Mark
Ivan Jacobson
Denver, CO
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Although pegmatites are scattered throughout
New England, gem-bearing pegmatites are rarer and those
where the gems are found in crystal cavities –
clay-filled pockets or miarolitic pockets are rarer
still. Maine of all the New England states has the highest
concentration of gem pocket-bearing pegmatites. Colored
tourmaline (elbaite), beryl, topaz are the most well-known
gems. Fluorapatite, hydroxl-herderite, pollucite, and
phenakite are rarer gemstones but not as well appreciated
except for purple apatite. The least appreciated but
most common gems are the quartz varieties: rose, smoky,
yellow and clear quartz.. Although Maine has the most
occurrences, they are still not abundant enough to make
obtaining these specimens, whether faceted or as crystals,
easy. This presentation will highlight some of the better
colored gem minerals of Maine.
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Maine
1. Dunton, Crocker,and Rose quartz crystal
2. Black Mt. quarries
3. Emmons, Tiger Bill
4. Tamminen-Waisanen, Hayes, Harvard, and BB
5. Deer Hill, Colton Hill, Lord Hill
6. Mt Mica
7. Mt. Marie
8. Bennett and Orchard
9. Mt. Rubellite
10. Havey - Berry,
11. Mt. apatite quarries: Pulsifer, Wade, Keith, Maine
Feldspar and Greenlaw
12. Trenton and Fisher
13. Golding and Harvard cut
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Figure 1. Roebling purple apatite, Pulsifer Quarry
Mined circa 1913, Smithsonian Collection, 4.3 x 3.8
cm
Photo: Mark Jacobson |
The fieldtrip website link is: https://fieldtrips.coloradomineralsociety.org/.
The 2025 Field Trip list is below.
If you need to renew your 2026 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.
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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.
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You
must be a member to attend any fieldtrips and you can
join or renew at the link above.
Thanks!
Amber,
CMS President
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2025 Field
Trip List
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This year's Trip List is usually available around May 2026
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