History & Geology
The Tombstone Silver-Lead District, Arizona
April 2016 by W. Dan Hausel
In 1877, a prospector named Ed Schieffelin discovered silver in “the middle of nowhere” and staked two claims: “Tumbstone” and “Graveyard.” Soon a town and mining district were organized and acquired the name “Tombstone” after making a spelling correction.
Know Your District
We have to remember that the earliest miners were not geologists, but came from a variety of backgrounds. Their survival depended on finding enough gold so they worked hard and adapted to whatever challenges these new areas presented.
Strategic Metals—Part I
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.
WSGS Releases New Geologic Maps
The Wyoming State Geological Survey announced ten new geologic maps have been completed and are now available.
Kennecott Copper Mine, Kennecott, Alaska
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.
Green Valley Gold District, Payson, Arizona
Most gold-bearing quartz veins found in the district were fracture fillings in faults enclosed by crushed quartz zones along their margins. Since the host rocks were often extensively weathered, portions of the veins stood out as positive, resistant outcrops. The gold-bearing veins ranged from a few inches wide to the vein at the Gowan mine that was as much as 12 feet wide. The Pearce Mineralized Area, Dragoon Mountains, Arizona
...I would bet considerably more lode gold and silver remains to be found in this area, and there are possibilities for small placers and nugget shooting.
Refractory Gold Processing
After your excitement peaks when you first receive the high gold assay from the vein you just exposed, you ponder how you will extract and sell your gold. You will need to develop a flow sheet for your process to optimize your recovery and minimize your costs and permit requirements.
Subscription Required:
The Bawl Mill
• Legislative and Regulatory Update
• Ask The Experts
• Ask The Experts
• Ask The Experts
• Dry Washer, Wet System or Metal Detector?
• Multiple Use Lands, Symbiotic Relations and Conflict Resolution
• Enrichment of Mineral Deposits by Weathering—Part II
• Vendors Announced for Gold Prospecting and Mining Summit
• Sold: 87-Ounce Nugget
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
Free:
How to Stake Your Own Mining Claims—Part II
• MMAC & PLP Update
