History & Geology
The Rochester Mining District of Nevada
August 2017 by Chris Ralph
Only the richest ores could be worked and shipped off for processing at a profit. As a result, early mining in the southern part of the Humboldt Range was short-lived. In the 1880s, placers were discovered in Spring Valley and American Valley on the east side of the range...
Gold From Cemented Gravels
The truth is that cemented gravels are really not all that complex. There is no mystery of how gold grew there or somehow wormed its way into these solid gravels.
$50 Million in Gold From 1857 Shipwreck Approved for Sale
The gold is all for sale. Just one tiny coin alone could go for $1 million because of its combination of rarity and the history behind it...
Jadeite in California
...two jadeite locations in California have been thoroughly researched by geologists. There are no doubt others that lie in wait.
Iron Ores and Iron Mining
For more than 40 years, iron ore prices have been decided by private negotiations conducted between the largest of the iron miners and the largest steel producers. These two sides dominate both the spot and contract iron ore markets.
Silver and Base Metal Deposits of the Pioche District
The areas that were mineralized with the bedded ore were huge and vast tonnages were indicated, although they had no idea at the time.
Exploring and Mining for Uranium
For a time uranium was more popular with prospectors than gold, but this is no longer true, and it has been decades since it was common to see individuals armed with Geiger counters out in the field.
The Goldfield Mining District, Nevada—Part II
The majority of the gold produced in Goldfield has come from ores that are close enough to the surface to be oxidized by the air. This oxidized ore is normally a soft, shattered, earthy material usually stained yellow to brown by oxides of iron.
Subscription Required:
The Bawl Mill
• Ask The Experts: How would you go about evaluating a silver deposit?
• Legislative and Regulatory Update
• How to Make a Rock Sled for Dredging
• More on Detecting Pocket Gold
• Early Summer Mining in Wyoming
• US Rare Earths: We Have & We Have Not
• National Hall of Fame Names 2017 Inductees
• EPA Reopens Comments on Pebble Project
• Over the Divide: Wayne (Jerry) Keene 1934-2017
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
Free:
MMAC Update
