Professional Equipment for Serious Detectorists!

Magazine

History & Geology

Gold, Quartz & Chalcedony—Part II

The 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.

Online access required. Please .

Add a Comment

Additional articles that might interest you...

Jamestown and Our Mother Lode Gold Rush Adventures


There are many other locations in the area where gold has been found, but Woods Creek is the most famous of the creeks and gulches in the area where the 49ers searched for that elusive yellow metal.

When Legends Were Made and Fortunes Found


Sylvester Smith and his younger brother Nathan were among this group who rode and led their Indian ponies, while climbing the rugged Salmon River breaks and rockhewn mountains, looking for a path that would lead them up and over the uncharted wilderness.

SS Central America Gives Up Millions in Gold Rush Era Gold


A treasure-seeking young man whose name will forever remain anonymous made the months-long journey either over land or by sailing ship to California after word spread about the gold strike in 1849.

All About Lead Minerals, Silver and Gold


Many miners know that lead is very commonly associated with silver values, but the truth is that it is also associated with gold values in many locations as well.

Confluence Placers


Confluences of placer streams are well known as concentration sites for heavy minerals. The basic reason is that...

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.

The Struggle to Reopen Alaska's Largest Gold Mine


The historical AJ mine, located east of Juneau, Alaska, was considered the largest gold mine in the state at one time. Joe Juneau and Richard Harris struck gold there in 1880, and it has been more recently known as a tourist destination.

Subscription Required:
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

Free:
Are Permits Needed For Highbanking In California?   • Prospecting Australia—Part II: There and Back Again

Advertisements

Precious Metals Recovery plants and equipment
Fighting to keep public lands open to the public
Specializing in the processing of precious metal ores!
Watch prospecting shows on your computer right now
Free Online Sample Issue