July 2010


Power Sluicing for Gold
Greater processing speed means greater recovery
by Marc Davis

The Trap Rocks of New Jersey
An important source of zeolites and associated minerals
by Bob Jones

Rockhounding and Radioactivity
Radiation monitors add a new dimension to mineral collecting
by Steve Voynick

Rock & Gem Kids
Meet Mr. Bones and take our quiz!

Cire Perdue
The art of lost wax casting
by Bob Jones

A Great Find in Gaithersburg
Visit a gem of a rock show in Maryland
by Andrea Stein

Southern Arizona's Mines
Six historic and inspirational tours near Tucson
by Helen Serras-Herman


All She Wrote
The Write Stuff
by Lynn Varon

Craftsman of the Month
Jadeite-agate lampshade
by James M. Lynch

Show Dates
Mark your calendar!

Shop Talk
Polishes and Polishing
by William A. Kappele

Rock Science
Polymorphs: Calcite and Aragonite
by Steve Voynick

Picks & Pans
Museum exhibits, book reviews, hobby news

Off the Dop
by Jim Perkins

Many Facets
Talladega Bonfire
by David Corn

On the Rocks
Krisalle-ized Golds
by Bob Jones

Field Notes
Reader letters

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