Mineralogical Society

The Morris Museum Mineralogical Society (MMMS) was founded in 1971 to promote interest and education in the various earth sciences and, in particular, the subjects of geology, mineralogy, paleontology, lapidary and related subjects.

The MMMS meets at the Morris Museum at 7 p.m. on the third Thursday of the month, except in July and August. Most meetings, which are open to the public, feature a speaker who delivers an illustrated lecture.

The society also hosts Rock and Mineral Weekend on Thanksgiving weekend every year at the Museum. Now, after eight years hosting the Gem, Mineral, and Fossil sale on the grounds of Delbarton School in Morristown, the show will be held in August on Museum grounds.

For more information about membership in the club and its activities, email [email protected]


Gems from the Collection of the Morris Museum.

Annual Gem, Mineral & Fossil Sale 
Saturday, August 18, 
11:00AM – 5:00PM

Shop with top mineral, gem and fossil dealers. Thousands of specimens and books, jewelry (including overstock from the Morris Museum Collection) will be available for purchase.

Adults: $5*
Children under 12: $3*

* Includes Museum Admission

The vendor space has currently full, but contact John Sanfaçon at 201.787.0545 to see if  space becomes available.


Rock and Mineral Weekend 

Organized by the Morris Museum Mineralogical Society, this popular, annual weekend event is free to the public with admission to the museum. It is generally held the weekend of the Thanksgiving holiday in November.  Science enthusiasts of all ages will have the opportunity to examine fossils, minerals and fluorescent rocks. Guest speakers, mineral and fossil displays; workshops and games add to the weekend tradition.

Visitors may start or add to their own rock collections with purchases from commercial vendors. Items for sale hail from all parts of the world and include fine, collectible specimens as well as purely ornamental pieces. Those attending are encouraged to bring their own rock, fossil and mineral specimens for traditional and computerized identification. In addition, exhibitors share their own private collections of world-class fluorescent minerals. Children join the fun by participating in crafts and other activities.