Curious about the world under your feet?

Join with us to explore

the earth's 4000+ minerals and how they came to be!


Mission of the Mineralogical Society of the District of Columbia (MSDC)

  • To learn together and further knowledge about mineralogy and earth sciences
  • To share the pleasure of collecting minerals
  • To welcome you to explore these interests with us

Who We Are

  • We're rockhounds, professional mineral scientists, mineral collectors and enthusiasts, and people with new interests in minerals and earth sciences.
  • We're from DC, the Maryland and Virginia suburbs, and points beyond.
  • You're always welcome!

What we do:

  • Since 1942, we've met at the Smithsonian Institution to discuss all facets of earth sciences and hear  from experts in many related fields.
  • We sponsor or join with other local clubs for field trips.
  • Our monthly newsletters offer diverse articles at all knowledge levels.
  • We support mineral sciences by volunteering at the Smithsonian and elsewhere and by finding other ways to expand interest and knowledge.

When and Where

  • 1st Wednesday of every month except July and August.
  • At the Smithsonian National Museum of Natural History (NMNH), 10th Street and Constitution Avenue NW, Washington, DC.
  • 7:30 p.m. in the Constitution Avenue lobby. A security officer leads us to our meeting room, so please be on time.
  • December time and place may vary.

Next event – everyone welcome! -- DC Mineral Society Rockathon! This Saturday!

When:  Saturday 9/23/17, 10 AM - 3 PM

Where:  The Fisher's garage at 14981 Gold Post Court, Centreville, VA 20121

What:  A rock, mineral, and book sale in the form we’ve enjoyed for years at James Madison University - no prices -  just come, look, pick out some books, rocks, and minerals and leave a donation.  Cynthia Payne donated most of the books. The rocks and minerals are from members and from members’ estates.

Why: To raise funds for a December anniversary party to celebrate our club’s 75th anniversary, and the 50th anniversary of the Micromineralogists of the National Capital Area

Please join us, visit with your friends, and take home some treasures!

Want to know more about any of this?

  • Email us at thompson01 at erols dot com. We’re happy to answer your questions.

  • Check the MSDC newsletter.

  • Visit a meeting any time!