Nice Specimen Gold Recovered in Northern California
September 2017 by Scott Harn
Each specimen is carefully examined to determine if it would be beneficial or not to use an acid treatment to reveal more of the gold.
Kimberlite is very difficult for geologists to find, let alone prospectors and rock hounds. This is because kimberlite is rarely exposed on the surface and few people know how to identify the rock.
The pile up on the small hill had to be a couple yards of black sand. I’m not one to ignore a little gold even if it is small in size—I have always believed that gold fever comes in all sizes.
I like to think in terms of “conductive mass” because it is a combination of both the conductivity of the metal and the size of the target that determine how a detector sees conductivity.
Our destination was some old hydraulic workings where the old miners had washed literally mountains of material away to expose gold in ancient river channels.
The nugget was cast aside with larger rocks during the screening process, but it was found later by an employee...
Our research indicated this whole area had been claimed by Newmont mining company for several years, but when the price of gold dropped they let the claims expire, and we confirmed this with the local BLM office.
Once a seam is found it can be traced for miles in either direction. While you are tracing a clay line, you are looking for indicators. The indicators that I look for are ironstone, hematite, different color clays intermingled with the clay line, and a very iron-rich, brown gritty soil.
The Bawl Mill • Our Readers Say • Ask The Experts - Where can I get geological maps? • Ask The Experts - What happens to gold during flash flooding in dry areas? • Ask The Experts - How do gold and silver stocks react in market crashes? • Ask The Experts - I need help with more in-depth mining research • Ask The Experts - Is this gold? • Legislative and Regulatory Update • Entry-Level Metal Detectors for Gold Prospecting • MMAC Update • How to Recognize Hard Rock Gold Ores • The Coeur Rochester Mine • Detecting and Recovering Those Tiny Pieces • EPA Chief to Reconsider Paying Claims Over Mine Waste Spill • Environmental Analysis Starts for Proposed Idaho Gold Mine • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices