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. After many years of hosting the Gem, Mineral, and Fossil sale on the grounds of Delbarton School in Morristown, the show is now held in August on Museum grounds.

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



Saturday, August 1, 2020
10:00AM – 4:30PM

Shop with top mineral, gem and fossil dealers spread throughout the museum*. Thousands of specimens, books, jewelry and more (including overstock from the Morris Museum collection) will be offered for sale.

*Face coverings required at all times while in the museum for patrons over 2 years of age
Social Distancing rules will apply throughout museum and at vendor tables

Members: FREE (access to vendors, all open museum galleries)
Non-Members: FREE with Museum Admission**
(**includes access to vendors, all open museum galleries and a $5 coupon good towards any purchase at the Morris Museum mineral sale tables (excludes gift shop).

All admission tickets must be purchased in advance.


Friday, November 27, 2020
Saturday, November 28, 2020
Sunday, November 29, 2020


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, as well as gallery and special mineral and fossil displays add to the weekend tradition.

Visitors may start or add to their own rock collections with purchases from commercial vendors and Morris Museum overstock. 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 identification. In addition, some exhibitors may share their own private collections of world-class fluorescent minerals.

Members: FREE
Non Members: FREE with Museum Admission