Sampling, Hydro-Shocking & Cleaning Quartz-Gold Specimens
May 2017 by Reese Townes
Many specimens have a small amount of gold and are not pretty to look at. There is a nifty way to give them a makeover and make them much prettier than they were when you found them.
Before going into an analysis of the ore composition, two other major factors will affect the result. These are the accuracy of the assay and the effectiveness of the mill for the gold recovery.
I am going to suggest dozens of ways you can increase suction power, dredge to greater depths, and improve recovery methods in your sluice box.
Last month I wrote an article entitled “Good Assays and Bad,” which gathered a few comments.
Prospectors have many reasons why they might want to break rocks. These include dividing up a specimen too large to carry.
Q: I am looking for a “trommel machine” that doesn’t separate anything but clay slurry from rock hard clay.
The first and most important thing of the sampling process is to try to be as unbiased as possible. There is a natural tendency to select rock that looks the best—even unconsciously.
Carbon, activated charcoal, or “char,” as some old timers refer to it, can be an assayer’s nightmare.
The Bawl Mill • Legislative and Regulatory Update • Ask The Experts: How many claims can I file in Arizona? • Ask The Experts: What should I do with a large amount of old placer concentrates? • Shaker Tables for Processing Hard Rock Ores • Becoming a Successful Detectorist • Hand Panning Micro-Fine Gold • My Lucky Thirteen Nuggets • Crushing, Grinding and Pulverizing • A Break in the Weather • From the Editor • Prospecting Knowledge -- Pass It On! • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices • Over The Divide: Miles John Mitchell