Lode or Placer: What Difference Does It Make?
September 2014 by Keith BowenThis explains the large difference in particle sizes between placers and hydrothermal lode deposits, but also means that while the mining may be similar in some cases, the sampling and recovery techniques are usually quite different.
With eight loads processed, a pumpkin-size rock fell into the hopper, stopping the whole operation until I could lift it out.
Our testing over the past 15 years was to confirm or deny the USGS report completed in 1978. Besides the half acre test dig, we completed many additional test digs by hand and with the backhoe.
Micro blasting can be used to take down hanging rock, separate minerals from overburden, and collect gemstones and other high-value product with minimal damage.
The Gold Eye placer claims, located in the La Cholla district of Arizona, are still producing some beautiful gold. From the days of the Spanish explorers and Mexican miners, men have tunneled into the earth in search of gold in this area.
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 evaluation must also consider the gold fineness or purity. The purity of the Sugardaddy nuggets is estimated at 850 fineness, meaning 85% is gold (Au), 12% is silver (Ag) with 3% being other gangue alloyed metal.
They… create negligible fumes and much less fly rock than blasting. Below are some tips on maximizing your effectiveness with these tools.
The Bawl Mill • Ask the Experts • Ask the Experts • Taking on the EPA, Sasquatch, Ratchilla and Gold Dredging • Gully Prospecting and Mining • Wilfley Tables—Repair, Rebuild & Set Up • Designing and Evaluating Placer Gold Recovery Plants • Finding Streams of Gold • This is Why You Check Your Tailings • New Rules to Impact the Lease/Buy Decision • There's a First Time for Everyone • Appeals Court OKs Permits for Upper Peninsula Mine • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices