Let us help you recover valuable metals. 888-437-1187

Magazine

All Articles

How PGMs Affect Assay Beads

Most fire assayers are trained to observe the cupelled beads very carefully, noting any discoloring or surface roughness that might indicate that one or more of the platinum group metals (PGMs) are present. The “clues and tests” I have included in this article stem from several sources, including my 35 years of experience performing torch assays...

Online access required. Please .

Add a Comment

Additional articles that might interest you...

Picks & Pans: The Professional Nuggetshooter


I recently returned from a nugget-shooting trip somewhere in the extensive Basin Range of Nevada. While there, I happened to meet “Young Fella,” a professional nuggetshooter.

In Pursuit of Gold & Silver in the Sierra Madres—Up and Running


The day has finally arrived. After five long years, much tribulation and many trial runs, today is to be a full day of production.

How to Interpret Assay Values


This assay system of ounces per ton sounds simple enough, but the use of the metric system and the additional measuring terms of “grams per ton” and “parts per million” (ppm) has created some misunderstanding of ore value.

Champions Crowned at the California State Gold Panning Championships


By the end of the day Sunday there were a lot of tired panners! By then they could have panned more than 10 times to continue to advance. This was not a picnic!

Nevada Miners: Check Your Claim Markers


The Nevada Senate introduced SB108 in 2009 to prohibit PVC piping utilized by miners to stake mining claims.

Strategies for Detecting Heavily Pounded Areas—Pt II


Look around for areas where you don’t see detector holes or drywasher piles and try your test hole at these spots to determine depth to bedrock.

Legislative and Regulatory Update


• Oregon proposed withdrawal
• Vote

Subscription Required:
The Bawl Mill   • A True Endangered Species   • Guest Editorial—Vertical Disintegration   • USGS Reports Increase of Imported Minerals   • The San Juan Mountains, Colorado   • A Silver Opportunity   • Gold in Virginia   • Picks & Pans: DEF Prospectors Rally Was a Huge Success   • News From GATA   • Our Nugget Shooting Adventure   • Fly Fishing the Mine Tailings/Headwaters of the Clark Fork, Montana   • Company Notes   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices

Free:
Legislative and Regulatory Update

Advertisements

Precious Metals Recovery plants and equipment
Fighting to keep public lands open to the public
Specializing in the processing of precious metal ores!
Watch prospecting shows on your computer right now
Free Online Sample Issue