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History & Geology

Jadeite in California

...two jadeite locations in California have been thoroughly researched by geologists. There are no doubt others that lie in wait.

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Additional articles that might interest you...

Simple Rules of Gold Geology: Comparing Epithermal and Mesothermal Deposits


Geology is a science of general tendencies with frequent exceptions, not one of hard and fast rules that are always true and never vary. For almost every well-accepted rule of gold deposits, I can point you to a number of important exceptions.

Eastern Arizona: Gold and Base Metal Deposits—Part I


Arizona is well-known for its copper-gold porphyries and massive base metal-gold sulfide deposits such that primary gold deposits in the state are often overshadowed.

Gold Deposition and Gradients of Placer Streams—Part I


When placer miners from the gold rush era began experimenting with the slope of their sluices, they must have pondered the ideal slope for trapping gold in a creek bed too. Logic suggests the same is true for streams...

Prospecting for Silver Deposits


In some ways, silver is the forgotten precious metal because it straddles both the world of precious metals and jewelry, while having many important  industrial applications like a base metal. The price of silver reflects both the precious metal investment demand as well as the industrial demand.

Rare Silver Nuggets And Their Origins


Silver nuggets have been described as “ultra-rare,” “prized” and “unique.” Naturally occurring silver nuggets are rare enough to suggest caution when purchasing. Fakes have reportedly been produced and misrepresented for sale as genuine specimens.

Understanding Rock Formations: Petrology for Prospectors


There are times when being able to recognize a type of rock can make you a much more successful prospector.

Unique Rare Earth Mine in Texas


Exploration for and prospecting in search of similar deposits should focus on rhyolite bodies located in fluorite-bearing areas.

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The Bawl Mill   • Our Readers Say   • Ask The Experts   • Ask The Experts   • Exploring Snakehead   • One of the Richest Beaches Ever Mined   • Prospecting for Gold in Baja California   • What's All This Talk About Mining Districts?   • The Power of Mining Districts   • What is a Mining Right?   • The Gold, Silver and Base Metal Mines of Eureka, Nevada   • Tips for Detecting Nugget Patches   • Mining Stock Quotes and Mineral & Metal Prices   • State Lends Help to County in Nevada Road Fight   • Melman on Gold & Silver   • Utah Approves funds to Fight Feds

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