Garrett Electronics - trusted by real miners & prospectors!

Magazine

History & Geology

All About Minerals

There are several common ways that new mineral crystals form and grow. Perhaps the simplest is when minerals form through the cooling of molten rock and the atoms bond together into mineral crystals.

Online access required. Please .

Add a Comment

Additional articles that might interest you...

Benches and Fossil Placers


Unfortunately for us mortal humans, we have a poor perspective on geologic time. When we look at a landscape such as a stream valley, we see it only in two, or at the most, three dimensions. We have poor comprehension of the valley’s fourth and most important dimension—time.

Conrey Dredge No. 4—Part II


These were the men who periodically picked up the gold amalgam from the tables and sluices in the dredge, processed it, and transported the gold ingots to the railroad express office in Alder. Their trustworthiness must have commanded a prominent wage.

Ask the Experts: VMS ore


Q: Are there any mills that handle VMS ore?

The Rochester Mining District of Nevada


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...

Prospecting for Copper—What to Look for on the Outcrop


For the prospector, knowing what oxidized hydrothermal alteration looks like in the field is an important exploration tool.

ICMJ Visits Virginia City, Nevada


The Birimian Greenstone Belts of West Africa


A few years ago I had a tremendous opportunity to visit Australia and hunt for gold there. The geology of the gold deposits there was somewhat different from what I was used to here in the US. I learned a lot about greenstone belt gold deposits while prospecting them in person, and it was an amazing trip.

Subscription Required:
The Bawl Mill   • Ask The Experts   • Ask The Experts   • Our Readers Say   • Gold in Tertiary Gravels   • Detecting Clay Seams   • Associated Gold Placers of the Comstock   • MMAC & PLP Update   • Feinstein Pushes for Million-Acre Land Grab   • Prospecting for Liberated Gold   • The Snapshot   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices

Free:
Legislative and Regulatory Update

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