The Colorado Quartz Gold Mine, Mariposa County, California
by Robert B. Cook, Carl A. Francis, Bryan Lees
One of the most difficult specimens for a mineral enthusiast to acquire is a significant crystallized gold. Read Abstract
Mineralogy of the Eldorado Mine, Yankee Boy Basin, Ouray County, Colorado
by Tom Rosemeyer
El Dorado! Derived from Spanish for "the golden one," it was originally believed to be a legendary city in Columbia, South America, that was rich in gold and treasure. Read Abstract
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