Curious about the earth's 4000+ minerals?

Interested in how they formed?

So are we!

MSDC PURPOSE – to promote interest in mineralogy, geology, and related earth sciences, and to encourage mineral collecting.

MEMBERS – from curious novices to expert geologists. We’re a friendly group, happy to have you visit anytime.

FIELD TRIPS – fun ways to learn & collect. See Field Trips tab.

AWARD-WINNING NEWSLETTER – often with award-winning articles by members. See Newsletters tab.

ORIGIN – founded as a not-for-profit organization in 1942 by members who included Smithsonian mineralogists.

NETWORKS – MSDC is a founding member of the Eastern Federation of Mineralogical and Lapidary Societies, and a member of the American Federation of Mineralogical Societies. We value our collaboration with other clubs. Many members belong to multiple clubs.

Admiring a mineral at a meeting

MEETINGS – monthly at the Smithsonian Natural History Museum.

Great presenters – Smithsonian scientists, USGS geologists, field collectors, expert members, university profs, etc. Sample past topics at bottom of Calendar page.

Time for socializing and sharing your finds – door prizes – more.

First Wednesday of each month except July and August. December date may vary.

Be in museum lobby at Constitution Avenue and 10th Street NW before 7:45 p.m. so security officers can take us to the meeting room.

Metro (Federal Triangle station - Blue/Orange line) and on-street parking (ask for tips).

Next meeting - See below on this page..

Examples of past programs - Scroll to the bottom of our Calendar.

JOINING – annual dues $20 per person, $25 per family. Join at a meeting or mail us your membership form and check.

OFFICERS – David Nanney (president), David Hennessy (vice president), Andy Thompson (secretary and Eastern Federation liaison), John Weider (treasurer), Yury Kalish (officer), Steve Johnson (newsletter editor), Ed Fisher (hospitality), Casper Voogt and Betty Thompson (website managers).

New rockhound? Collector? Learner or expert about minerals and geology?

For your calendar:

Next MSDC MEETING – Wed., May 4:  John Weidner will present the organizing principles by which silicates are classified - almost 50% of the Dana mineral classification system! See full description on our Calendar page. Let us know (email thompson01 at erols dot com) if you want to join us for dinner beforehand at 6 pm at the nearby Elephant and Castle Restaurant, a 2-block walk from the Smithsonian Natural History Museum. Or just be in the Natural History Museum lobby at 10th and Constitution Avenue NW, Washington, DC, by 7:30 pm so that a security officer can lead us to the meeting room.

May 9 - Rockville, MD - GLMS-MC meeting, 7:30 pm at the Rockville Senior Center, 1150 Carnation Drive, Rockville, MD 20850. Visitors always welcome.

May 9 - DC - GLMSDC meeting, 7-9 pm, Chevy Chase Community Center, Lounge conference room, 5601 Connecticut Avenue, NW. Free parking in back of the building and on side streets. Visitors always welcome.

May 9-15 - Wildacres with the Eastern Federation of Mineral and Lapidary Societies - a week of fine hands-on workshops, speakers, field trip option, great companionship, and good times - at a modern mountain-top retreat 40 miles north of Asheville, NC. $400 includes room, meals, and all programs.

May 21 - Towson, MD - 27th Annual Chesapeake Gem and Mineral Show, presented by the Chesapeake Gem and Mineral Society. Rohl Armory, York Road at I-695, Towson, MD.

May 23 - Arlington, VA - Micromineralogists of the National Capital Area club meeting, 7:30-10 pm at Long Branch Nature Center, 625 South Carlin Springs Road, 703-228-6535.Visitors always welcome.

May 25 - Northern Virginia Mineral Club meeting.7:45 pm at Long Branch Nature Center, 625 South Carlin Springs Road, 703-228-6535. Visitors always welcome.


June 1 - DC - MSDC MEETING - Susan Fisher on Mississippi Type fluorite deposits. If you can join us for dinner beforehand, email thompson01 @ and come to the Elephant and Castle Restaurant at 6 pm (1201 Pennsylvania Ave. NW). Or just meet at 7:30 pm in the Constitution Avenue lobby of the Smithsonian Natural History Museum (10th and Constitution Ave. NW), so a security officer can lead us upstairs. Visitors always welcome.

More at Calendar-Meetings tab.

Opportunity! – Help scientists search for 145 carbon-bearing minerals! They're relying on us, the mineral-collecting community. For real.

CONTACT  US anytime at thompson01 at erols dot com.

MSDC is based in Washington, DC, and is convenient to the Maryland and Virginia suburbs.