Rockin' in the Northwest Corner!

Information about Rock, Mineral and Fossil collecting in NJ, NY and Pa.


Minerals and fossils found here in the Tri-State area have been an interest of mine for a while now. There are many options in this region for mineral and fossil collecting if you just know where and how to look. I hope to answer some of the questions you may have in this website.

There are collectible rocks and minerals all over the area, but the variety and quality of what you can find right here in New Jersey is incredible!

This quote from an article written in the Mineralogical Record in 1979 says it all:

"Known as the Garden State, New Jersey ranks among the world's 3 most noted gem and mineral producing regions. More than 200 mineral species have been named and described from a single locality in the state(Franklin-Ogdensburg), and a great variety more from hundreds of other spots around the state. Of these, at least 40 were first identified in NJ, and many of those have never been found anywhere else on earth. These are numbers that cannot be matched anywhere else on the planet. While the Franklin deposit may be considered a mineral mecca for collectors, the state's traprock quarries are of equal interest. The NJ traprock quarries lead the world in minerals found in the cavities in the basalt lava. These zeolite cavities are a never-ending source of excitement to discriminating collectors. NJ was also, for a time, a world leader in the production of iron due to its large deposits of hematite and magnetite, and is currently the world leader in the discovery and production of gem quality amber, and a major source of the lapidary minerals datolite, serpentine, and  prehnite."

Hey, don't forget about us rocks up here in New York, either.....

                                           Amity, NY Mineral locality

The purpose of this website is to share information and knowledge about mineral and fossil collecting in the Tri-States area with fellow rockhounds and people who would just like to learn a little about the geology of our wonderful area. I have designed the site to provide the most information available about our hobby. The collecting sites listed on this web site are for informational purposes only. I only post specific information about collecting sites that I am personally comfortable collecting at. I take absolutely no responsibility for what happens at any of these sites. Always check with landowners before entering private property. Never litter or leave a mess, and always respect property owners. Read about my favorite collecting locations on the Rockhounding and Fossil pages.

There is nothing being sold on this website, and I am not a mineral dealer.

A Bit about me....

I'm your webmaster, Jeff. My Rockhounding began when I moved to Montague, NJ in 1997. Soon after, some neighborhood kids showed me a place in the woods near my home where there was a deposit of beautiful water-clear quartz crystals. That find lit the fire in me and  I have been collecting quartz crystals ever since that day, but I became a serious mineral collector in 2005 when I attended my first rock and mineral show in Franklin, NJ, and then my first-ever club sponsored field trip in 2006. After that, I was hooked. I have also discovered fossil collecting when I found out that my house is less than 1000 feet from the best fossil deposit in the state of New Jersey, Trilobite Ridge.  I am very familiar with many sites throughout the tri-state area. I am the former president of the North Jersey Mineralogical Society, and an active member of the Franklin-Ogdensburg Mineral Society, the Orange County, NY Mineral Society, and the Delaware Valley Earth Sciences Society.  I also participate in activities at the Franklin Mineral Museum, and Sterling Hill Mining Museum. I regularly collect minerals and fossils in New Jersey, New York, Pennsylvania and Connecticut. If you have any questions or comments about the website, please contact me.

 E-Mail Jeff


I am honored to be included in the book and to have some of my information published. Thanks, R.B.!


I added a new page to my site. After numerous e-mails and phone calls, I have decided to put up an online guidebook on how to buy and sell minerals and collections. Click on the link below to go to the Buying and Selling page!



For a listing of upcoming Gem, Mineral & Fossil Shows and Events, Click HERE


Rock and Mineral Related Web Links:

"A Location Guide for Rock Hounds in the United States"

A .pdf file of an entire book full of mineral locations throughout the U.S.  Great listings of NY, NJ and Pa. sites!! You will need Adobe to open this file. Well worth saving into your computer. It is older information, and sometimes, a bit confusing, but it can provide valuable insight into numerous collecting sites across the U.S. If you're really interested, you can print it! All you'll need is a ream of paper and a couple gallons of ink! (the book is 520 pages long!!!)

Part 1 - A thru I

Part 2 - I thru N

Part 3 - O thru Z and Appendix

COOL Stuff!

ONLINE Mineral Museum

John Betts created an online mineral museum that shows some of the best specimens that have ever passed thru his hands. Check it out!!


More web links

MinDat.Org - The most comprehensive and complete Mineral Database on the internet.

The Vug - Your one source for all that is rocks, minerals and gemstones Another great mineral reference website

Abandoned Mines website

Iron Miners Website - (abandoned iron mines in the NY-NJ-Pa area)


Join a local Rock &

Mineral Club Today!!

Joining a local mineral club opens the world of rock and mineral collecting up to you in many ways.

-Very inexpensive, usually between $10-20 per year.

-Informative meetings

-Meeting interesting and knowledgeable people

-Club newsletters

-Club members-only field trips, parties and events

-Lectures and discussions

-Rock and mineral shows

-Insurance coverage for club-related field trips

These benefits are offered by most clubs. For the minimal cost of a yearly membership, you can have all this plus more! Check out these great area rock and mineral clubs!


North Jersey Mineralogical Society (NOJMS)

Orange County (NY) Mineral Society(OCMS)

Delaware Valley Earth Sciences Society(DVESS)

Mineral Society of Northeast Pennsylvania

Pennsylvania Earth Sciences Association

St. Lawrence County Mineral Club

Mid-Hudson Gem and Mineral Society

Wayne County Gem and Mineral Club

Franklin-Ogdensburg Mineral Society(FOMS)

Capital District Mineral Club

Danbury, Ct. Mineralogical Society

Central Pennsylvania Rock and Mineral Club 

Syracuse Gem and Mineral Society



Sterling Hill Super Digg Website

Franklin Mineral Museum

Sterling Hill Mining Museum



Geologic Tools Website

Bing Maps (very good mapping site w/ excellent aerial photos)

Mount Ida Chamber of Commerce - The quartz crystal capital of the world!!(just for fun)

Herkimer Diamond Mine

Crystal Grove Diamond Mine and Campground UNDER NEW OWNERSHIP!!

Ace Of Diamonds Diamond Mine and Campground

Paradise Falls Hike-and-Hunts

Gitche Gumee Agate Museum



My personal on-line railroad photo archive site:

Jeff's RR Photo Archives


I will always attempt to keep this site fresh with regular updates as often as possible.

This website last updated on January 7, 2018

This website was "born" on April 6, 2007

Trilobite fossil, Trilobite Ridge, Montague, NJ - Found 2011

Fellow rockhounds that have stopped by...


Thank you for visiting Jeff's Tri-States Rocks and Minerals Website. Come again!