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Platinum Group Metals
May 1999 by William M. Clem
Platinum is only one of a group of related metals that are referred to as platinum group metals (PGMs), because platinum in its native state usually contains all six metals of the group along with some iron.Additional articles that might interest you...
Desert Bonanza
July 1999
If you think all the vein gold near the surface has been dug up—think again! A weekend prospector recently came into the lab with a shoe-box full of samples that were from ten to fifty percent native crystalline gold on dirty white quartz.
If you think all the vein gold near the surface has been dug up—think again! A weekend prospector recently came into the lab with a shoe-box full of samples that were from ten to fifty percent native crystalline gold on dirty white quartz.
A New Method for Handling Stubborn Gravity Middlings
July 2016
The solution focused on the relative difference in malleability between gold and waste, rather than the difference in density exploited by gravity circuits.
The solution focused on the relative difference in malleability between gold and waste, rather than the difference in density exploited by gravity circuits.
Accident at Robinson Mine Leaves Two Dead
January 2005
“We are saddened by the loss of two Washington Group employees and our thoughts at this time are with their families,” said Bill Myckatyn, CEO of Quadra Mining.
“We are saddened by the loss of two Washington Group employees and our thoughts at this time are with their families,” said Bill Myckatyn, CEO of Quadra Mining.
Ask the Experts
April 2014
Bismuth oxide for assaying?
Bismuth oxide for assaying?
Melman on Gold & Silver
December 2015
Many observers have questioned why the precious metals have not enjoyed strong rallies despite a growing number of positive indicators.
Many observers have questioned why the precious metals have not enjoyed strong rallies despite a growing number of positive indicators.
Hidden Treasure Mine—Foresthill Divide, California
September 2008
One of the greatest and richest underground placer mines of California was the Hidden Treasure Mine of Placer County.
One of the greatest and richest underground placer mines of California was the Hidden Treasure Mine of Placer County.
Ask The Experts
May 2016
• How small should I crush my hard rock ore?
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