Hard Rock 101: Breaking Rock—Part I
May 2020 by John Norman
What do you do when you’ve located a promising deposit of gold or gemstones, but it’s trapped in solid rock?
How many more clays seams lie adjacent to known shear zones and quartz veins in the pocket areas of southwestern Oregon?
If Epd is larger, then the compressor will be spinning faster than the manufacturer’s maximum specified RPM and might destroy itself. If this happens, then the compressor again might not produce enough air to support a diver. Neither is a desired outcome.
Ultraviolet light is divided into three levels, labeled A, B and C depending on the wavelength, with C having the shortest wavelength and the most energy.
While sitting there, I wondered if I should go over the hole again. I did and got a louder signal that turned out being about another twelve inches deep.
Don’t hunker down and just keep digging in one spot where there is very little or no gold—if you don’t find it, you’ve got to get up and move on!
Normally the detector he was using would sound off with a definitive high-to-low tone when passed over a piece of gold, which distinguished the gold from the many high iron content "hot rocks," but this one was different...
As I have always done, I stashed those heavy black rocks in my pack and put them in the garden at home. They never were given a second thought until a half decade later…
The Bawl Mill • Ask The Experts - What does a prospector look for when seeking ores? • Ask The Experts - Is a detector any good at discriminating pyrite or chalcopyrite in ferrous-reject mode? • Ask The Experts - Does the Journal know if any gold mining has been shut down over the Covid-19 virus? • Ask The Experts - Is this a promising assay? • Ask The Experts - How do you utilize magnets in your prospecting equipment? • Ask The Experts - Is using hydrogen peroxide a good indicator for PGMs? • A Note from the Editor • Going Over Old Ground With Newer Technology • Tips and Tricks • Prospecting in the Age of Covid-19 • Sharing Gold Fever with a Friend • Panning on North Fork American Yields Good Gold • Gold Prospecting for Better or Worse: Dum-Dum Dodges a Boom-Boom • 'Wormholes'—Reckless Adventure • All About Lead Minerals, Silver and Gold • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices