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Gondwana Gold Gravels
June 2000 by Edgar B. Heylmun, PhD
The German scientist, Alfred Wegener, came out with his theory of "continental drift" in 1912. He was considered a crackpot and it was half a century before geologists and planetary scientists began to take a second look at his theory.
Hard Rock Milling: A Matter of Scale
Most prospectors understand placer mining a lot better than hard rock mining and don’t realize the amount of work that goes into processing different types of hard rock ore.
The Fire Assay of Carbon
Carbon, activated charcoal, or “char,” as some old timers refer to it, can be an assayer’s nightmare.
The Golden Highway—Amador County
Leaving sprawling Calaveras County, California, and heading north, the next county along the Golden Highway (Hwy 49) is tiny Amador County. Packed into it’s roughly twenty-five mile stretch of the historical roadway are some of the most charming, scenic towns that will be encountered along the whole way. This stretch was also home to some of the richest gold placers during the gold rush, a fact not lost on those who still try their hand at panning and dredging today.
No Mining / Logging on 40 Million Acres
Roadless areas in 35 states would be affected under the plan.
PDAC 2009 Convention Highlights
...it was impossible not to notice the absence of many junior mining companies that were present last year. Due to the dual circumstances of the world’s credit problems along with the steep declines in base metals prices, many of them, unfortunately, have simply gone broke and closed their doors. Others are so strapped for cash...
Ask the Experts
• Recovering platinum
Alaska Gold: Lisianski Inlet's First Bonanza
In 1967, a local resident showed me a pouch of small gold nuggets and flakes. Several years later I asked the same person where that gold was found. He responded, “From the streambed below the old stamp mill at Apex.”
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The Bawl Mill
• Our Readers Say
• Guest Editorial—Unreasonable Interpretations
• Ruling Awards Giant Nugget to Finder
• Letter to the Editor
• Traditional Adversaries Reach Agreement
• The Gold Belts of Georgia
• Company Notes
• Placer Testing with Large Samples
• Quick Thinking & Rescue Devices Save Two Lives
• Picks & Pans: The Discovery Gulch Diggings
• Prospector Finds Cache of Emeralds in North Carolina
• My Old Carbide Lamp
• Melman on Gold & Silver
• Hands & Pans on the South Yuba River
• Permafrost Tunnel Shows Cross-sections of Past
• Mining Stock Quotes and Mineral & Metal Prices
