Ask the Experts
December 2013 by Chris RalphOre testing and other advice for starting up a mining operation.
I had never run an impact mill before, but anything involving rocks, water and a big electric motor sounded great.
Over the years, I've noticed a pattern in the type of rocks associated with the best gold deposits in Midwestern glacial gravel.
Depending on the ore and if significant sulfides are present, a hard rock miner may be able to get away with simply using a flux to digest the other minerals that may be present.
A Wilfley table works best when all of the mineral being run across it (the pulp) is about the same size. For this reason, I took a good look at each of the samples.
Ore testing and other advice for starting up a mining operation.
Setting up a gravity dredge
Even with the decades of mining and exploration, much of the Comstock is still underdeveloped and its potential not fully tapped.
The Bawl Mill • Ask the Experts • Ask the Experts • Sierra County Gold—Part I • ICMJ's Annual Index • Ophir—Possibly the Best Kept Secret in Alaska—Part II • Hunting for Hardrock: The Basics • Gold in the San Francisco District Oatman, Mohave County, Arizona • Heavy Glacial Rocks and Gold in the Midwest • Strategic Metals—Part II • The Amazing Mineral Tourmaline • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices