Using Rock Formations to Your Advantage
June 2005 by Jim StraightOver the past twenty or more years, the traditional “seat of the pants” science of using mineral identification tables as a means to identify common ore minerals, their associated rock-forming minerals and rocks, has slowly become a lost art.
For obvious reasons southern California is not known historically for its gold mines. Gold production was concentrated heavily in the Sierra Nevada foothills in the northern part of the state. However, the high mountainous region of eastern San Diego County was the site of a number of productive hardrock gold mines, notably in the late 19th century.
…the excitement passed so quickly that little work was done, but they still have good potential, and I find they are not as well-known and not hit so hard by most prospectors.
A rush of platinum and diamond exploration projects and discoveries is generating renewed interest in the historic gold-producing region of the Yentna-Cache Creek District in south-central Alaska.
This mine was a real wonder of engineering, and the water supply and drifts had to be carefully managed to keep it in operation. In fact, it didn’t close due to lack of gold, but instead closed with the fall of the Roman Empire.
His small business managed to pump millions of dollars over the years into the California economy.
The Bawl Mill • Our Readers Say • Pacific Legal Foundation Gets Significant Win • States to Govern Own Roadless Areas • Corralling Those Pesky Platinum Group Metals • Turquoise Mining—Labor Intensive, But Worthwhile • Goldville, Alabama • Companies Scramble to Boost Copper Production • Mining Sisters Make History • Picks & Pans: The Perfect Paystreak • Significant Oil and Gas on Alaska's Central North Slope • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices