Sampling for Success—Part II
April 2020 by Chris Ralph
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.
Mike and Machael dug in just downriver of that boulder pile and right away found good color and a few small pickers.
Then I came to a section of recently exposed gravel that looked unworked. Water seeped out all around, making the ground beneath a sea of slick mud.
Let’s set up a thought experiment: Suppose you had some material that ran one ounce per ton gold, which is generally considered high grade to fantastic grade depending on the circumstances.
My largest nugget from this area is almost one-half ounce. I’ve found several smaller chunks and many pickers in addition to the fines and flakes that I put in my poke.
I decided to dig near it to see if there were any more and immediately uncovered others. In total I found a pocket with over 100 crystals in it. I was hooked.
Looking at the exceptions to the basic rules is sort of an advanced prospecting discussion, but the readers of ICMJs Prospecting and Mining Journal are plenty able to handle it.
I began detecting at the bottom of the gully and started making my way upstream. About mid-way there was a nice, flat stretch for about ten feet.
The Bawl Mill • Ask The Experts - Investing: How do you know which companies have potential? • Miners Fight Back When BLM Says 'Your Claim Is Too Long' • It's Another 'Ben Day' • How to Research Prospecting Locations and Mining Claims • Some Tips and Tricks for Dredgers: Determining Pulley Size and Belt Length • Where Will The Gold Price Go From Here? • Holcomb Valley Gold, Southern California • Gold Prospecting for Better or Worse: The Good Luck and Bad Luck of Prospecting With Animals • Lode Miner Continues to Find Pocket Gold • Judge Backs Minnesota's Twin Metals Mine in Lease Dispute • Over the Divide: Rick Lague • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices