Discovery of the Mountain Pass REO Deposit
May 2001 by Edgar B. Heylmun, PhDHow does one go about discovering a rare earth oxide (REO) deposit when he is not familiar with the rare and unusual rocks and minerals that are found in such deposits? That was the case at Mountain Pass, California, yet the deposit was eventually discovered and mined.
- And then there was one...
- The humble heros of the CEA
• Vista Gold Corp.
• Latitude Minerals Corp.
• Altair International Inc.
• Homestake Mining Company
• Kinross Gold Corp.
• Rayrock Resources Inc.
• What budget deficit?
• Congressional underdog...
• More than just 12 angry men...
• Judge refuses to grant preliminary injuction to end suction gold dredging moratorium in California
• Proposed listing of Yellow-legged frog and Yosemite Toad in northern California
I mostly nugget hunt within the Great Basin and Mojave desert areas of California and Nevada, and less frequently the Sonoran desert of Arizona. I have discovered the gamma grass, sagebrush and creosote areas of the Great Basin and Mojave are friendlier to nuggetshoot than the vegetation within the Sonoran desert.
Geologists have long realized that the vast majority of gold in typical quartz veins is in the tiny, dust-size range, a lot smaller than the gold nuggets found by placer miners. This is common worldwide in many, many gold districts.
The known iolite deposits are accessed at Palmer Canyon and Grizzly Creek in the central Laramie Mountains 15 to 18 miles west of Wheatland and 60 to 70 miles northwest of Cheyenne.
The Bawl Mill • Original Sixteen to One Goes to Court—Challenges MSHA Citations Part II • The Golden Triangle of Sonora, Mexico • Using Legal Subdivision • Placer vs. Lode Gold • Gold Tellurides: Tellurium, an Assay Impurity • Court Hears Arguments Over Rights to Shipwreck • Picks & Pans: How to Succeed in a Small Mine, A Case History: 1990-2000 • Charcoal Crucible Recipe • Romance of the Old Silver King • Record-Breaking Alaskan Nugget for Sale • Company Notes • Nevada Gold Production Up Despite Lower Prices • Gold in Guatemala • Bush Taps Utah Resident for Labor Post • Looking Back • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices • Honda Pares Down Use of Precious Metals in Autos