All Articles
Breccia Pipes
December 2001 by Edgar B. Heylmun, PhD
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.
Additional articles that might interest you...
Eolian Placer Gold
February 2012
I would first like to mention that I am not a geologist. I have, however, spent the last 8 years intently searching for gold nuggets with a metal detector. I have found gold in numerous locations, and in several different types of gold deposits.
I would first like to mention that I am not a geologist. I have, however, spent the last 8 years intently searching for gold nuggets with a metal detector. I have found gold in numerous locations, and in several different types of gold deposits.
Attention to Detail - Part II
September 2016
Ditches almost always started in the high country and contoured the mountainsides, making a long drop, usually many miles away, to the goldfields. There are ditches in Trinity County that originate at seven and eight thousand feet in the Trinity Alps that carried water almost thirty miles.
Ditches almost always started in the high country and contoured the mountainsides, making a long drop, usually many miles away, to the goldfields. There are ditches in Trinity County that originate at seven and eight thousand feet in the Trinity Alps that carried water almost thirty miles.
Discovery of the Silver Bullets
April 2001
In 1926, Carl W. Chilson wrote the authentic history of his family and the discovery of the legendary Apache Mine of the Silver Bullets. The story starts out in 1868 when Steve L. Chilson leaves Bandera, Texas, with his family en route...
In 1926, Carl W. Chilson wrote the authentic history of his family and the discovery of the legendary Apache Mine of the Silver Bullets. The story starts out in 1868 when Steve L. Chilson leaves Bandera, Texas, with his family en route...
The Art of Finding Coarse Gold—Part III
February 2005
In the first part of this article, we took a look at the special geology required to form coarse gold. In the second part, we looked at field examples of coarse gold occurrences and the geology of residual placers.
In the first part of this article, we took a look at the special geology required to form coarse gold. In the second part, we looked at field examples of coarse gold occurrences and the geology of residual placers.
ICMJ Visits Virginia City, Nevada
September 2023The Bawl Mill
October 2007
• Something smells fishy
• Australian government underestimates its youth...
• Membership has its privileges
• Bridge over troubled waters
• Something smells fishy
• Australian government underestimates its youth...
• Membership has its privileges
• Bridge over troubled waters
Subscription Required:
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
