An Arizona Clam Dig, Carnelian-Replaced Clams From the Petrified Forest Area, Apache County, Arizona
by Frank Bain
A new and unique find of carnelian-replaced freshwater clams was recently made east of the Petrified Forest National Park in Arizona.
Abstract
The Conco Mine, North Aurora, Kane County, Illinois
by Jared T. Freiburg and John Rakovan
A discovery of exceptional calcite crystals, concentrically zoned with marcasite and pyrite inclusions, was recently made in the Chicago metropolitan area at the Conco mine, North Aurora.
Abstract
