The Franklin-Ogdensburg Mineralogical Society, Inc. (FOMS)
provides programs designed to benefit the community, mineral collectors,
and others interested in the minerals, mineralogy, and geology of the
Franklin-Ogdensburg area of New Jersey

Our Mission:
  • To establish and maintain, in cooperation with other interested groups, a permanent museum in Franklin, New Jersey for the minerals of Franklin and Ogdensburg.
  • To develop new information on the minerals and mineralogy through cooperative programs with universities and other scientific organizations and individuals.
  • To obtain and make available accurate, up-to-date information on the minerals and mineralogy of the areas.
  • To facilitate collecting of the local minerals while conserving material for future collectors.
  • To facilitate accurate identification of the local minerals.
  • To promote fellowship and the advancement of mineralogy and geology by providing meetings for members of the Society.

Become a Member

Our yearly activities consist of seven scheduled meetings and field trips. Meetings are open to the public, and are held at 1:30 PM, usually in Kraissl Hall at the Franklin Mineral Museum, Evans St., Franklin NJ. Members receive our official publication, The Picking Table, which is issued twice a year in the Spring and Fall. It features articles of interest to the mineralogical community that pertain to the Franklin-Ogdensburg area and will advise you of the dates of meetings, field trips, and other activities of the Society. The FOMS Activities Schedule is also posted on the Franklin-Ogdensburg Mineralogical Society public group on Facebook. To become a member, please fill out and print the membership form.

Our Next Field Trip and Meeting: June 15, 2019

9:00 AM - Noon - FOMS Field Trip - Collecting at the Hamburg Mine/Lang Shaft (private property)
Meet at the Franklin Mineral Museum at 8:30 am sharp, where participants will be escorted to the location.

Noon - 1:15 PM - Future Rockhounds of America
Meet in Franklin Mineral Museum’s Kraissl Hall
Parents are welcome to sit in the meeting room
For questions please contact Mark Dahlman at: or 301-428-0455

1:30 PM - 3:30 PM - FOMS Meeting, Franklin Mineral Museum.
Lecture: The New Jersey Zinc Company Mining in the West, by Bernard Kozykowski.

Bring your specimens for show-and-tell, and discussion.

For all upcoming events go to our Events Page

Last Field Trip Report - Collecting at the Balls Hill iron mines, November 21, 2015

On our last dig of 2015, the club had a special field trip. Thanks to the efforts of our field trip coordinators Bernie Kozykowski and Rich Keller, we visited the Ball's Hill Iron Mine for the first time in decades. Members reported finding good examples of magnetite ore, lots of epidote, pyrite, quartz, and microcline feldspar.
For the full report with descriptions go to our Past Field Trips page.

Fluorescent Franklin Mineral

Aragonite coating on calcite / willemite ore collected at the Franklin Buckwheat Dump, November 2015 night dig.
The willemite fluoresces green, the calcite red, and the aragonite blue to blue-green in shortwave UV light.

Use Use the buttons below to see the rock fluoresce.

image in white light image in UV light


Newly Added Images of Franklin Minerals, Franklin-Ogdensburg area.