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Basic Geology for the Independent Miner—Part III Understanding Plate Tectonics, Volcanism and Mountain Building

The formation of gold, silver and many other types of deposits depends on a natural segregation of the elements from the earth, so that gold or silver (and other minerals) becomes enriched enough to form a valuable ore.

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Gold in Jasperoid


Jasperoid is a jasper-like siliceous rock, in which chalcedony or cryptocrystalline quartz has replaced limestone, dolomite, or shale. It forms the gangue of many important ore bodies. It is stained by iron and manganese oxides into shades of...

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Q: Is there a special name for this silver and copper alloy?

Ask the Experts


Using GIS systems to aid in mapping.

Melman on Gold & Silver


This was not a month for the weak-hearted. During the past thirty days, we have had an explosive intensification of the Middle East conflict, threats of OPEC using the “Oil Weapon” once again, a growing chain of events flowing out of the Enron collapse and...

Gold Prospecting for Better or Worse: Powerless


My brother Darryl and I had not had a prospecting adventure since January and we wanted to try out our new drywasher, so we decided to go for the weekend and check out some claims near Barstow…

Clarence King, Geologist


Clarence King was born in Rhode Island in 1842, the son of a businessman. His father died when he was 6, so he was raised by his mother. She wanted to have Clarence attend the very best schools, and even moved in order to have him in the best district. She gave him a magnifying glass on his 7th birthday, and this led to his discovery of fossil ferns in neighborhood rocks.

Piggin' for Gold


Take a look at the picture—it’s pretty simple and you can build it yourself.

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