Epithermal Ore Deposits Associated With Tertiary Volcanism—And the Feasibility of Metal Detecting for Them
December 2000 by Jim StraightEpithermal ore deposits are common in regions of late volcanic activity, especially areas associated with Miocene and later Pliocene extrusive volcanics that have not been deeply eroded since the ore was deposited. Many are simple fissure veins, but stock-works and ore-pipes are also common.
The Philippine archipelago, with over 7,000 islands that stretch for 1,100 miles north-south, was settled by Malaysians several thousand years ago. Ferdinand Magellan landed and was killed there in 1521. Spaniards took over the islands in 1571, and founded Manila, which is located on a large natural harbor. After the Spanish-American war in 1898, the United States took over the Philippines, and found itself in a brutal 6-year war before gaining control of all of the islands.
Gold deposits and outer space
How can it make sense to pass legislation to increase the spending power of the citizenry in order to stimulate economic activity and, at the same time, enact a series of new taxes that will diminish spending power?
A federal judge has tossed a lawsuit filed by opponents of a Tucson-area mine that had accused the US Forest Service of violating two federal laws in its handling of the mine issue.
Normally the detector he was using would sound off with a definitive high-to-low tone when passed over a piece of gold, which distinguished the gold from the many high iron content "hot rocks," but this one was different...
• Good news on EPA regs
• California rewards key appointment to dredging foe
• Republicans seek to block creation of National Monuments
• Zimbabwe threatens seizure of mining rights
The Bawl Mill • Letter to the Editor • Potaro District, Guyana • World Gold Council Launches $3 Million Ad Campaign • Prospecting With Color • Prospecting for Platinum in Wyoming • Picks & Pans: More Big River Dredging in Northern California • A Changing Diamond Industry Looks to Canada for Growth • History of Mining—Bradshaw Mountains, AZ—Part II • Company Notes • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices