Gold, Quartz & Chalcedony—Part II
November 2011 by W. Dan HauselThe specific gravity of chalcedony is 2.58 to 2.64. This is slightly lower than coarsely crystalline quartz because of slight porosity in chalcedony. Being so light, it will easily wash out of a gold pan.
Some of the wire forms are strange and fantastic, with wires sticking out in twisted, seemingly random directions. Others have deformed crystals and all of them have significant value to collectors.
Gold is a fairly widespread mineral in the Italian Alps and in the Northern Apennines. It is found both in primary mineralization and in past and recent floods.
The Wyoming State Geological Survey announced ten new geologic maps have been completed and are now available.
Confluences of placer streams are well known as concentration sites for heavy minerals. The basic reason is that...
Only the richest ores could be worked and shipped off for processing at a profit. As a result, early mining in the southern part of the Humboldt Range was short-lived. In the 1880s, placers were discovered in Spring Valley and American Valley on the east side of the range...
In this second part on cobalt, I will take a look at the various types of cobalt deposits and how you can prospect for them. Who knows—perhaps the next big cobalt strike will be yours.
What also helped keep Coulterville alive was the fact that the town itself happened to be sitting on top of one of the richest veins in the Mother Lode. The ledge itself was three hundred feet wide.
The Bawl Mill • Legislative And Regulatory Update • Ask The Experts—Compensation for closed mining claim? • Ask The Experts—Inconsistent fire assays • Gold From Cemented Gravels • Evolution Of A Gold Prospect • Alaska to Target Rare-Earths • Minnesota Delays Decision on Mineral Leases • Alaska's Cripple Creek Mining District • The Gold Of Horseshoe Bend • Tyrie's Roadway Nugget • Melman on Gold & Silver