Spanish Silver in Arizona
October 2001 by Edgar B. Heylmun, PhDWhen Spaniards entered what is now Arizona, they encountered diggings made by Opata Indians. The Opata Indians, who now live and mine in the northeastern part of the state of Sonora, Mexico, were one of the few Indian tribes that was...
Melman on Gold & Silver
Talk about “déjà vu!” Americans woke up early morning Tuesday, November 6 with a Democratic President; a Senate with a narrow Democratic lead and a House with a strong Republican majority. They went to bed late Tuesday night with a Democratic President; a Senate with a narrow Democratic lead and a House with a strong Republican majority.
Ask the Experts: various mining courses
Q: What classes should one take if planning on majoring in mining engineering or geology?
Exploring Iron Oxide Copper Gold Deposits
The excitement over IOCG deposits began with the discovery of a monster deposit at Olympic Dam in Australia in 1976. The discovery was accidental as the operator was searching for strata-bound copper deposits.
Detecting: Small Creek Yields Good Gold
Most of our gold recoveries have been in the cracks of the bedrock. Hot rocks in the form of dikes cross the creek at various locations, causing us to skip those areas.
Gold Circle (Midas) Gold District
Many prospectors thought that Nevada was all prospected out following all the rich discoveries of the 1860s and 1870s, and what was there to be found had already been found.
The Bawl Mill • Our Readers Say: • Placer & Lode Gold Deposits • Hog Mountain Mining, Past and Future • Picks & Pans: Dredging Costa Rica • Gold in Texas • The Goldhill Mining District • New Arsenic Study Supports Tougher Standards • Miners Resume Search for Platinum Near Platinum • Discoloring Assay Beads • Tons of Gold Buried Under World Trade Center • Gold Rush Ship Uncovered in San Francisco • Mining Stock Quotes and Mineral & Metal Prices • Melman on Gold & Silver • The Financial Repercussions of the WTC Tragedy • Permit Appears Likely for Rock Creek Mine