December 2001 by Edgar B. Heylmun, PhDA 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.
The Nevada Historical Society's
"This Was Nevada" Series
About a half-hour after everything got underway, James came back to Harley, whispering, “Harley, you’re not going to believe this, but I just detected a vein with gold, lots of gold...I mean lots of gold. You’ve got to come and see this.”
The big interest to prospectors thinking about the effect of erosion is not what might happen long into the future, but what they might find in the rivers later this summer when the water levels go down.
Wyoming is an excellent place for prospectors, rock hounds, and companies to search for a variety of mineral resources.
• It's almost November
• Two federal land managers found guilty of contempt
• A chance to halt additional wilderness in Southern California
• Oregon mineral withdrawal
• A really good reason to get out and vote in Oregon
It turns out the old Anaconda Co. really did have 10,000 miles of tunnels beneath this mining city. That’s one of the findings by researchers who have produced a new map that charts the thousands of underground mine shafts here, providing a detailed look at some of Butte’s mining history.
The Bawl Mill • Our Readers Say • 43 CFR 3809 Update • Newmont Tries to Become World's Largest • The Final Gold Strike of the Alaska Gold Rush—Livengood Stampede, 1914 • GATA Update • Aussie Gold—A Look at Queensland • Montana's Virginia City Has Golden Legacy • Picks & Pans: Lost Below • Placer Gemstones • Gold in Iceland? • Mining Stock Quotes and Mineral & Metal Prices • Melman on Gold & Silver