History & Geology
Ask The Experts
June 2015 by Chris Ralph
Gold in clastic black shaleAdditional articles that might interest you...
Mineralized Faults and Contacts in the Search for Gold
January 2016
Fault zones and rock contacts are important because the vast majority of gold and silver deposits, as well as those of many other metals, are formed by hot, mineralized water solutions.
Fault zones and rock contacts are important because the vast majority of gold and silver deposits, as well as those of many other metals, are formed by hot, mineralized water solutions.The Giant King Mine
July 2014
Most gold-bearing veins in this region are controlled by fractures associated with the Melones Fault, a late Cretaceous structure that is 108 to 127 million years old.
Most gold-bearing veins in this region are controlled by fractures associated with the Melones Fault, a late Cretaceous structure that is 108 to 127 million years old.
The Golden Days of Julian, California
October 2011
Some scattered reports say that gold may have been washed from streams here as early as the 1840s, but the undisputed major discovery came in 1870.
Some scattered reports say that gold may have been washed from streams here as early as the 1840s, but the undisputed major discovery came in 1870.
Eastern Arizona: Gold and Base Metal Deposits—Part I
February 2011
Arizona is well-known for its copper-gold porphyries and massive base metal-gold sulfide deposits such that primary gold deposits in the state are often overshadowed.
Arizona is well-known for its copper-gold porphyries and massive base metal-gold sulfide deposits such that primary gold deposits in the state are often overshadowed.
Strategic Metals—Part I
November 2013
A bill was introduced and passed by the House of Representatives earlier this year that should make the exploration and opening of a mining operation faster and easier.
A bill was introduced and passed by the House of Representatives earlier this year that should make the exploration and opening of a mining operation faster and easier.
Perception of Mining vs. Reality
May 2015
Many modern mining companies have taken to making a special effort to ensure the goods and services they need are supplied as much as possible out of the local economy.
Many modern mining companies have taken to making a special effort to ensure the goods and services they need are supplied as much as possible out of the local economy.Ask The Experts
June 2015
Sulfides and oxides—what's the difference between the two?
Sulfides and oxides—what's the difference between the two?
Subscription Required:
The Bawl Mill
• Ask The Experts
• Ask The Experts
• Ask The Experts
• Ask The Experts
• Companion Gold
• The Smell of Gold—Part I
• A Few Tips and Tricks for Beach Mining
• The Basics of Froth Flotation
• Direct and Constructive Notice
• Moore Creek, Alaska—Then and Now
• Nome Offshore Dredging Creates Challenges
• Mining Journal Wins Again!
• The Montanore Copper and Silver Project
• Family Wins Back Seized Gold Coins
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
Free:
Legislative and Regulatory Update
• Update on MMAC & PLP
