History & Geology
Ask The Experts
June 2015 by Chris Ralph
Sulfides and oxides—what's the difference between the two?Flood Plain Gold Deposits—What Are They Really?
We just completed a trip to another river, and yes, there was definite movement and redistribution of gravels, and other prospectors have seen this as well.
Picks & Pans: Gold Recovery in Placer Mining Operations
Two of the major factors affecting the profitability of a placer mining enterprise are the relative efficiency of the mining equipment, and the rate and percentage of recovery obtained while conducting mining operations.
Ask The Experts
Q: Is there a correlation between fault zones and mineralization of economic metals?
Diary of a Diamond Prospector
I couldn’t wait to get started. With no field budget, an assay budget of $100/year, a 1975-Ford Bronco that was a road hazard, a gas card, a topo map and full support of the director, I headed to the State Line district near Tie Siding along US Highway 287 to begin mapping kimberlite.
Sulfides and Intergrain Gold Wire Nuggets
...these nuggets have not traveled far from the lode because the golden wire lattices would have been torn apart or flattened during weathering of rock and deposition by violent stream action.
Natural Gold Alloys
Natural gold is never 100% pure; all natural nuggets contain at least some impurities. We're going to take a look at just what some of those impurities might be.
The Significance of Nuggets in Placers
Chances are better that both types of gold did not come from the same source. Let's look at the probable conditions to cause two types of gold in a placer.
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
