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Placer Gemstones
December 2001 by Edgar B. Heylmun, PhD
Only the so-called “precious gems” will be considered in this article. They are diamond, ruby, sapphire, and emerald. A “gem” must be rare, hard, and durable, and possess a unique color or quality in order to be classified as a gem.Melman on Gold & Silver
Our initial thought is simply this: why create these artificial currencies, unbacked by any material wealth, when the two items that worked so well century after century—namely gold and silver—are still fully available?
Ask The Experts - How does gold form?
Sage-Grouse Listing Denied
The federal government decided not to add the greater sage-grouse to the list of endangered species. A listing would certainly have resulted in countless new restrictions across the Western states.
MINExpo 2004 Convention Report
Unquestionably, the first impression received from touring the exhibition areas at “MINExpo International 2004,” sponsored by the National Mining Association and held at the Las Vegas Convention Center from September 27-30, is one of sheer size. While other gatherings are delighted to host a couple of hundred exhibitors and attract three or four thousand attendees...
Journeys in the Kingman Quadrangle—Part II
In the northwest section of the Kingman Quadrangle, the Kingston Range rises out of the alluvium of the Pahrump and Mesquite valleys. Kingston Peak, rising to an altitude of 7,320 feet, towers high above its foothills.
Melman Reports From PDAC—News About India, China, and a Potential Shortage of Nickel
PDAC’s (Prospectors and Developers Association of Canada) annual convention held each spring in Toronto, Ontario, Canada is generally regarded as the largest and most impressive annual gathering of the mining industry in the world.
Building the American Dream
What goes into making a home? For starters, about 439 pounds of copper!
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