Over the Divide: John A. Miscovich
October 2014 by StaffMining “giant” John A. Miscovich died August 22, 2014, at the age of 96. He was the well-known inventor of the “Intelligiant” water cannon.
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.
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.
It also happens sometimes that glaciers will bury valuable placer deposits. This occurs when the glacier goes over the top of an existing placer deposit.
The specific gravity of chalcedony is 2.58 to 2.64. This is slightly lower than coarsely crystalline quartz because of slight porosity in chalcedony. Being so light, it will easily wash out of a gold pan.
There are several common ways that new mineral crystals form and grow. Perhaps the simplest is when minerals form through the cooling of molten rock and the atoms bond together into mineral crystals.
An example of some of this extraordinary ore was a lot of about four tons from the Florence mine during the last days of a lease that averaged over 300 ounces of gold per ton.
The Bawl Mill • Ask the Experts • Ask the Experts • Ask the Experts • Ganes Creek After The Flood • Operation And Application Of Magnetometers • A Trip to Morgan-Monroe State Forest of Indiana • The Pedro Gold Dredge • Detecting Alone -- What to Look For • What Equipment Do I Need? • Why Did This Silver Mine Close? • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices