August 2012

ON THE COVER
The Coors Hall of Gems & Minerals holds an amazing collection of gem and mineral specimens, including this 2.5-inch by 2-inch lazurite (provenance unknown). (©Denver Museum of Nature & Science/Rick Wicker photo)

 

 

 

 

 

FEATURES

The Denver Museum of Nature & Science
Visit Colorado’s gem and mineral showplace
by Steve Voynick

Azurite through the Ages
Millennia of mining have not depleted its sources
by Bob Jones

CLUB WORKSHOP SERIES
Networking to Cut Costs
How the Ventura Gem & Mineral Society found a bargain building
by Jim Brace-Thompson

IN THE WORKSHOP
Build a Portable Water Supply
A nuisance-free setup for your home shop
by Douglas Klieger

Rock & Gem Kids
Barite, a Junior Rockhound Spotlight, and a quiz

Color in Minerals
Part II: The crystal field group
by Bob Jones

The Natural History of Cephalonia and Ithaca
Fine museums illustrate the geology of these Greek islands
by Helen Serras-Herman

The Land of Amethyst
Brazil is the most important source
by Bob Farrar

REGULAR COLUMNS

Picks & Pans
Museum exhibits, book reviews, hobby news

Lapidary of the Month
Silver and turquoise bola
by Bob O’Donnell

Show Dates
Mark your calendar!

Shop Talk
Dealing with Defects
by William A. Kappele

Rock Science
Anhydrite, Gypsum, and the Naica Mine
by Steve Voynick

Many Facets
DJG Omni Barrel
by David Groncki

On the Rocks
Featured Exhibits at the East Coast Show
by Bob Jones

Field Notes
Reader letters

Price: $7.99

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