The Bawl Mill

May 2001 by Scott Harn

Our Readers Say

May 2005
Re: "Synclinal Oil"

Ask The Experts: What to do with scheelite

June 2017

Q: What can be done with scheelite? Why does the ICMJ never list tungsten in the metals prices?

Spencer Opal Deposits, Idaho

July 2003
In order to give the reader a better appreciation of some alternative valuable minerals that can be found by the average prospector, we visited Bob Thompson’s Opal Mountain Mine located in Spencer, Idaho.

Minnesota Delays Decision on Mineral Leases

November 2011
Landowners complained that mineral mining on or near their property could damage property values while leaving them without a cut of potential profits.

VMS Deposits in Central Arizona

October 2004
Volcanogenic Massive Sulfide (VMS) deposits in the Central Arizona Precambrian volcanic belt occur within a felsic package of volcanic rocks capped by an exhalite unit comprised of cherts, iron formations and siliceous members.

Breccia Pipes

December 2001
A breccia pipe, or chimney, is an irregular cylindrical mass of breccia that is often silicified and stands out as an iron-stained knob. They can be from a few feet to several hundred feet in diameter, and may or may not be mineralized.

Judge Rules Against Oregon Miner

December 2009
A federal judge convicted Oregon miner Clifford Tracy of illegal mining while digging for gold on US Forest Service land.

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