Conrey Dredge No. 4
November 2017 by Don Madore
The large buckets were favorable for the type of ground worked. The gravel was tenacious and compact, due to the existence of irregular pockets of clay.
The steeper the gradient is, the more potential erosive power to move gold and other bedload sediments, and the more power to remove obstacles to flow.
While both zinc and lead deposits also are enriched by the surface weathering process, in part two we will look at the enrichment process for copper and also gold deposits, and at the interpretation of leached outcrops to figure how rich the concentrated deposits below them may be.
The most obvious benches are usually near the valley floor, but they can be thousands of feet above the valley floor. Since benches were made by streams, they can contain placer deposits.
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.
…it was immediately evident the previous owner had not been using a detector. During just a few months of working the dumps part-time, he recovered gold in quartz specimens valued in excess of $40,000.
The Bawl Mill • Legislative and Regulatory Update • Ask The Experts - How do I work this glacial deposit? • Ask The Experts - How do I best recover gold in pyrite? • It Pays to Know Your Bedrock • BLM Cancels 10-Million-Acre Sage Grouse Mineral Withdrawal • Take it to Bedrock • The Beatty Mining District of Nevada • Flood Plain Gold Deposits—What Are They Really? • Exploring Iron Oxide Copper Gold Deposits • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices