March 2000 by StaffExcerpts from California Mining Journal, our original title, published 50 years ago this month.
A breccia pipe, or chimney, is an irregular cylindrical mass of breccia that is often silicified and stands out as an iron-stained knob. They can be from a few feet to several hundred feet in diameter, and may or may not be mineralized.
Most small-scale miners want to know how they can set up a system much more cheaply. The difficulty is in the balance of putting together a decent small-scale system at a reasonable cost.
The future is still good for anyone wishing to use a metal detector to nuggetshoot residual and hillside eluvial placers. Since these placers are easily overlooked, the key to opening the door marked "success" is the willingness to do research.
Dale's research of known gold producing districts in southern California and his knowledge of metal detecting produced these large gold-quartz specimens. This certainly would make any trip a very good one, but it turned out to be just the...
Australia’s Perth Mint currently holds the record for the world’s largest gold coin.
Swedes were the first to note variations in the Earth's magnetic field, circa 1640, and they were the first to use the dip needle. They made the first magnetometer in 1870.
This article deals with massive sulfide deposits in the Klamath Mountains of southwestern Oregon, but it applies to massive sulfides found in California as well.
The Bawl Mill • Group Sues Feds Over New Nat'l Monuments • Tribe Joins Idaho in Roadless Suit • 10,000 Shovels Back Protest • Letter to the Editor—From Mike Miller, President, Original Sixteen to One Mine • U.S. Dept. of Interior Inspectors in Arizona • Wyoming Tops in Royalties • Sunnyside, Arizona • Evaluating a Placer Discovery • Company Notes • Treasures for Sale • "Gold" Coin Debuts • Picks & Pans: Prospecting at Mills Creek, Alaska • Delamar District, Nevada • Millie's Tailings • Adventure at the 420 Level • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices