All Articles
Wall-Rock Alteration
April 2004 by Edgar B. Heylmun, PhD
Wall-rock (country rock) alteration is found in all hard-rock mining districts and has been caused by hydrothermal solutions in the past history of the region. The zones of alteration have a bearing on where one might drill for ore bodies. The weekend prospector does not have the tools nor knowledge to block out ore deposits, but he can narrow down his search dramatically by understanding the zones of wall-rock alteration that he sees.Gold in Vermont
The principal gold belt in Vermont extends south from the Canadian border along the east side of the Green Mountains, as far south as the Massachusetts line. The entire region was glaciated during the Great Ice Age and the glaciers contained streaks of finely-divided gold, so some of the gold found in Vermont originated in what is now Canada.
Investors Take a Shine to Platinum, Palladium
Move over gold and make way for platinum and palladium. Investors are taking a shine to these lesser-known precious metals as their prices rise.
The Bawl Mill
- Senators want you to help to pay California rent
- Someone’s got a bone to pick…
Cripple Creek Gold Mine Exceeding Expectations
At the peak of construction later this year, the mine will generate more than 6,000 direct and indirect jobs across the state with annual wages totaling more than $200 million...
The Trail of ‘98
On June 16, 1897, the steamer Excelsior cruised into San Francisco Bay, completing its long voyage from Alaska. While a ship arriving from the far north was not a particularly unusual event, this one heralded news of something truly big.
Mining Reform and Congress
After years of negotiations between environmentalists and industry groups, observers say efforts to reform the 1872 Mining Law may finally pick up steam in Congress.
Subscription Required:
The Bawl Mill
• Our Readers Say
• Wyoming—A Land That Time (And Explorationists) Forgot
• Two Arrested in Alleged Mining Investment Scheme
• Melman Reports From PDAC—News About India, China, and a Potential Shortage of Nickel
• Picks & Pans: Family's Identity Forged Working Nevada's Gold
• Researching Suitable Areas to Detect for Free-Milling Gold
• A Working Arrastra
• Training Videos From NIOSH
• The Golden Highway—Amador County
• Prospectores Unite in Washington State
• Flexible Circuits Possible From Gold Wire
• Looking Back
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
