Next Meetup

Interactive Lecture: May the Quartz Be With You
Humans have used quartz since prehistoric times and continue to do so in the present. We use its crystal structure, fracture, and piezoelectric energy in present day technology in ways you might not even think about. During this presentation, Tom Piscitelli will consider: How did quartz help win WWI and WWII? How can you make music with quartz? How does quartz keep your watches and clocks ticking? Why is quartz at the heart of your radio, TV, and computer? How can it make you a star? How can it keep you healthy? Tom Piscitelli will tackle these questions during this interactive and fun talk. We will examine examples of quartz crystals from two famous major localities: Herkimer, NY and Mt. Ida, Arkansas and discover how and when these crystals formed. We will also see geodes from Dugway, Utah and Oregon thunder-eggs, and learn how they were formed. Tom will display many forms of quartz: chalcedony, flint, chert, jasper, agate, onyx, silicified or agatized petrified wood, opal, and obsidian. You'll see some surprisingly unique quartz forms. You don’t want to miss this unique and fun talk! Kids are welcome and encouraged to join! Location: The Natural History Society of Maryland Cost: $10 per person (and kids 16 and under FREE) You can pay in person by cash or check, or online at Who’s Tom? Tom Piscitelli is an avid rock, mineral and fossil collector (and a very dedicated volunteer of NHSM). His passion began while in high school, collecting in Ohio and Pennsylvania. Planned vacations have taken him to world famous collecting sites from coast to coast in the United States. Now retired, he enjoys sharing his collection with school children, senior centers, and at the Maryland Natural History Society. The vast number, varieties, and beauty of quartz minerals has fascinated him. As he has learned of their impact on our past and current everyday lives, he was motivated to prepare a presentation to share them. *** Tom, like most of the people leading NHSM, is a volunteer. The fees you pay will go directly to support the programs, the nature collections, and the building that make this kind of nature education possible. Please consider donating or becoming a member of the Natural History Society of Maryland and visit ( for more information. Thank you for your support!

Natural History Society of MD

6908 Belair Road · Baltimore, MD


Upcoming Meetups

What we're about

Public Group

Join the Natural History Society of Maryland to meet other nature lovers, outdoor enthusiasts, naturalists, and similarly inquisitive minds. We offer a wide variety of programs for the beginner to the advanced naturalist, and from informal social events to in-depth courses.

Everyone is welcome, but membership offers many free programs and discounts on others. So join us in a search for reptiles and amphibians, a canoe trip on the Chesapeake Bay, or to learn everything there is to know about Maryland dragonflies - it's up to you!

The mission of the Natural History Society of Maryland is to foster stewardship of Maryland's natural heritage by conserving its natural history collections, educating its citizenry, and inspiring its youth to pursue careers in the natural sciences.

The Natural History Society of Maryland (NHSM) is a 501(c)(3) nonprofit corporation founded in 1929. Its extensive collections of Maryland flora, fauna, fossils, and minerals, dating back to the early 1800's, are a rare and valuable asset to the State of Maryland. Help us build The Maryland Naturalist Center.

Individual $25.00
Family $35.00
Contributing $65.00
Sustaining $120.00

Join Now! Follow this link to our website and become a member.

Or send a check or money order to:
The Natural History Society of Maryland
P.O. Box 18750
6908 Belair Road
Baltimore, MD 21206

Be sure to include your contact information. Thank you for joining!

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