Our meetings are fun, interactive and educational. A place to gather to hear from geologists, college professors and our very own rockhounds who have stories and treasures to share.

So much is learned at our meetings! Please come! We welcome new visitors who become lifelong friends!

Our monthly meetings are open to the public, but we encourage you to join the club in order to receive additional benefits including field trips, our monthly newsletter, our Annual Rock & Mineral show,  our Annual Holiday Party and mineral auction. 

 We meet on the 2nd Friday of each month at the Chester Senior Center, 81 Laroe Road, Chester, NY  beginning at 6:30 pm all are welcome! Come and Join Us.

Join Us for our Virtual Mineral Meeting, Friday, November 13, 2020. Our Guest Speaker will be Howard Heitner. Due to the current Covid-19 Pandemic, this will be a virtual meeting online. We are using

The Topic Is:
Pseudomorphs, Trickster Mineral Specimens

The word pseudomorph was first used by Hauy in 1801. In Greek it means “false shape” A pseudomorph is a mineral that has the external crystal shape of another mineral. The subject of pseudomorphs was first written about in detail by the 19th century German mineralogist Johann Blum. Pseudomorphs were later classified by the mineralogist Strunz in 1982. The talk covers the various theories of how pseudomorphs form. In some cases the second mineral is similar in composition to the original mineral. In those cases the mechanism is a chemical reaction. In other cases the two minerals are not similar and the mechanism of pseudomorph formation is more complicated. There is still controversy about the formation of some pseudomorphs. The talk is illustrated with pictures of both common and rare pseudomorphs.

Orange County Mineral Society is inviting you to a scheduled Zoom meeting.

Topic: OCMS Zoom Meeting
Time: Nov 13, 2020 06:30 PM Eastern Time (US and Canada)

Join Zoom Meeting 

Meeting ID: 872 0483 3295
Passcode: 030101

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Meetings for 2020

January 10           Speaker  Howard Heitner

February 14        Speaker Doc Bayne

March 13             Speaker Dr. Charles Merguerian

April 11                (This is a virtual meeting)
May 8                   (This is a virtual meeting)

June 12                (This is a virtual meeting)

July 10                  (This is a virtual meeting)
August 14            (This is a virtual meeting)
September 5       No Speaker / Annual Picnic
October 9            (This is a virtual meeting)

November 13     (This is a virtual meeting)

Meetings for 2019

January 11          Speaker Dan Bishuk  "trace fossils"

February 8         Speaker Bill Prehoda

March 8              Speaker Doc Bayne "How Iron is made"

April 12               Speaker Dr. Charles Merguerian

May 10                Speaker Ted Johnson

June 14               Speaker Karenne Snow

July 12                 Speaker Eric Orlowski

August 9             Speaker Dr. Alexander Bartholomew

September         No Speaker/ Annual Mineral Picnic 

October 11        Speaker Jeff Fast

November 8      Speaker Derek Yoost

December 13    No Speaker / Annual Holiday Party