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.

Excellent speaker and program on Wednesday, Sept. 5! Everyone welcome!

Meeting Announcement


September 5, 2018 – The Sculptural Evolution and Predicted Future of Bermuda’s Geologic Landscape


Our September presentation will be made by one of our own members, Amanda Parker.  Amanda is a Fairfax, Virginia artist, mineral collector, and the newest member of our MSDC board of directors.  She has a strong interest in the geology of tropic locations, the surrounding sea life, and how historic climate changes affect Earth’s landscape.  She is especially fond of the island of Bermuda, having traveled there twice during the past year.


In addition to working on her tan, Amanda visited the famous pink beaches and the attractive caverns (stalactites/stalagmites!) that draw many tourists to this island, 600 miles off the coast of North Carolina.  Her talk will explain how Bermuda was formed, including the volcanic activity that sculpted the island and historic elevation changes.  In addition, she will cover the current cave structure, how the population utilizes the limestone, and the Bermudian solution to hurricanes and tidal waves.  She will explain a bit about the coral reefs near the island, how the famous pink sand forms, and how the island is currently evolving geologically and its predicted future.  Although glaciers were not present in Bermuda, Amanda will explain how they affected the island and its history.


Please join us in taking Amanda to dinner on September 5th before the club meeting.  We will be meeting at 6:00 pm at Elephant & Castle Restaurant, 1201 Pennsylvania Ave, NW, Washington, DC, about 2 blocks from the Smithsonian Institution National Museum of Natural History (NMNH) where our club meeting is held.  If you plan to come to dinner, please send an e-mail to me (davidhennessey  at and let me know so I can try to get the number right for the reservation - but do not hesitate to come to dinner if you forget to e-mail.  We can always make room for more around the table.  If you cannot make it to dinner, we will meet in the NMNH lobby at 7:30 pm so a security officer can lead us to room for Amanda’s presentation.


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!