History & Geology
Kennecott Copper Mine, Kennecott, Alaska
October 2017 by Jack Geck
For approximately 30 years, the mines produced good ore, some so rich it was simply sent straight to bagging, bypassing milling and loaded directly on the rail cars.
Gold, Quartz & Chalcedony—Part I
Gold has always been noted to have an affinity for quartz to such a degree prospectors almost always dig on quartz veins in a search for the precious metal.
Prospecting With The Help of Fluvial Geomorphology
Quiz yourself about the stream in figure 5. Based on your previous knowledge of where gold is found in a stream and in this article, where do you think you will find the most gold?
Critical Minerals: Tungsten
Because tungsten minerals are heavy, exploration can be done using stream sediment samples. Prospectors looking for gold have found scheelite or wolframite in their placer concentrates, and in some cases this has led them to make important tungsten finds.
Montana’s Rosetta Stone: Discovering Mines In The Treasure State
This is the intelligent way to start modern prospecting. The value of literary research yields challenging outings, specimens, history and geologic research.
Gold in the San Francisco District Oatman, Mohave County, Arizona
I suspect detailed geological mapping and prospecting would lead to discovery of one or more overlooked gold deposits in the district even though it has been heavily prospected in the past.
Prospector's Guide to Rock Breaking and Blasting
The holes were overloaded with explosives, but I didn’t know it. I was just a green mining engineer fresh out of school and told to watch as the experienced miners set the charge.
The Heavy Minerals in Your Concentrates
The fact that mineral deposits can contribute specific types of heavy minerals is why the analysis of the heavy mineral concentrates in the streams of an area can be an important prospecting technique for finding undiscovered mineral deposits.
Subscription Required:
The Bawl Mill
• Legislative and Regulatory Update
• Ask The Experts - Where should I get my geology degree?
• Ask The Experts - How much rock shall I crush to determine the value?
• Placers Directly Associated with Lode Deposits
• Is It Time for a Change? New Ways to Find More Gold
• MMAC Update
• Silverton's Gold
• Procuring Mine Owner Permission at a Mine Site
• Champions Crowned at the California State Gold Panning Championships
• Drywashing for Fine Gold
• ICMJ Gold Prospecting and Mining Summit Postponed
• High Prices for Gold, Silver & Copper: What Does it Mean for Prospectors?
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
Free:
Ask The Experts - Is there a standard percentage given to land owners who hold the mineral rights?
