The Nittany Lion looks out from a 
Central Pennsylvania doubly terminated quartz crystal.  Artwork © John Passaneau.
Nittany Mineralogical Society, Inc.
State College, Pennsylvania

Eastern Federation of Mineralogical and Lapidary Societies logo

American Federation of Mineralogical Societies logo
Your local non-profit mineral, gem and rock club
generally meets the third Wednesday of each month, August through May (except Nov. 14, 2018, second Wednesday).
We now meet in Penn State's Earth and Engineering Sciences Building, on White Course Drive off North Atherton Street.
See driving directions and campus maps.
All are welcome to attend our meetings!
Parents must provide supervision of minors.

Mineral collectors and rockhounds, earth scientists and dinosaur lovers will all enjoy our activities.

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Field Trips Junior Rockhounds Meetings Minerals Junior Education Day April 7 2018

Download and print a meeting flyer.

NMS October 17th meeting program:

Minerals on the Eastern Flank of the Berkshire Massif near Westfield, Massachusetts

by
Dr. Robert Altamura

Our October meeting will be held Wednesday the 17th in 114 Earth & Engineering Sciences Building (EESB) on the west side of the Penn State campus in State College, PA. Maps are available on our web site.
    6:45 to 7:45 p.m.: Social hour, special refreshments
    7:45 to 8:00 p.m.: nnual Membership Meeting, Elections
    about 8:00 p.m.: featured program

The event has free admission, free parking, and free refreshments, and is open to all; parents/guardians must provide supervision of minors. Bring your friends and share an interesting evening!


A string of serpentinites crops out on the eastern limb of the Berkshire massif. These masses are in the western belt of a double belt of ultramafic (rocks composed of mostly magnesium and iron minerals) pods that follow the Appalachian axial zone. In the Westfield area the serpentinites occur in amphibolites and mica schists with minor dolomitic marble. Serpentine minerals (polymorphs, having the same chemistry but different crystal structure) include antigorite, lizardite and chrysotile.

The serpentinites have relatively high contents of chromium and nickel, indicating an origin as ultramafic masses of mantle origin or as igneous melts. Whole rock chemical compositions of the serpentinites suggest that the original ultramafic rocks were of two types: harzburgite (an orthopyroxene-rich ultramafic rock) and dunite (an olivine-rich ultramafic rock)..

Foot-long pseudomorphs of serpentine (lizardite and antigorite) after olivine suggest the dunite was metamorphosed to produce these spectacular metamorphic crystals (porphyroblasts) that were subsequently converted to serpentine during a later retrograde (lower pressure/temperature) metamorphic event...

The presentation will discuss the processes and geological history involved in creating the minerals and complex and interesting rocks we see today.

See the full illustrated article in the October Bulletin (link at top of sidebar at left).

DRIVING DIRECTIONS and PARKING for Earth & Engineering Sciences Building meetings on the Penn State campus (NOT Minerals Junior Ed. Day): After 5:00 p.m. and on weekends, free parking is available immediately across the street from the building. From North Atherton St. (Business Rt. 322) between College Avenue and Park Avenue, turn west (toward the golf course) off North Atherton at the traffic signal marked "White Course Drive." Go past the parking attendant's booth, follow the curve to the left, then turn right into the parking lot before reaching the stop sign. The building entrance is a little beyond the center of the lot, at the crosswalk. Enter the building, then go all the way across the lobby for our social hour & meeting room. We have a simple map at http://www.nittanymineral.org/EESBmap.jpg. For official campus maps see http://www.geog.psu.edu/print-campus-maps .

T-shirts in Galapagos Blue and Texas Orange
NMS has in stock the new order of T-shirts in Galapagos blue, Texas orange (both shown here) and royal blue.


A station at our Minerals Junior Education Day
A station at our Minerals Junior Education Day


Celestine crystal cluster 2016: CELESTINE: Pennsylvania State Mineral?


Collecting in a quarry
Collecting crystals in a quarry


Five different posters
We have 2013 (and other) posters for sale!

©2018 Nittany Mineralogical Society, Inc.      Main page last modified 14 October 2018      webmaster