All Articles
Dry Placers in Southern Baja
June 2003 by Edgar B. Heylmun, PhD
The southern tip of Baja California is dominated by the Sierra de la Laguna, a 70-mile-long mountain range that reaches elevations of 7,095 feet. The range is also known as the Sierra de la Victoria.
Flood Stage—The Key to Reading a River
We knew what to do—we moved our project far enough from the river to escape the two hundred foot shoreline rule. If the old man had been right we could do this and still be over the loop of pay dirt.
Diamond Prospecting in Indiana
My first personal experience with placer diamonds was on a gold prospecting trip in Indiana about 8 years ago, when a fellow prospector was cleaning his gold concentrates.
Mining Journal Contest—How Much Is That Old Mining Journal Worth?
It could be worth $250! We are on a quest to find out who has the oldest surviving copy of our monthly Journal.
Ask the Experts
Can I treat a sample with muriatic acid?
Metal Detecting Old Hard Rock Mine Dumps
The type of mine dump that is best for metal detecting are the ones that consist of mixed sizes of rock and are located near some sort of excavation, commonly a shaft or adit. Sometimes the piles located along a trench dug by the miners can be productive as well.
Ask the Experts
• How do I clean up gold encrusted with iron-sulfides?
Small-Scale Processing of Hard Rock Ores
Depending on the ore and if significant sulfides are present, a hard rock miner may be able to get away with simply using a flux to digest the other minerals that may be present.
Subscription Required:
The Bawl Mill
• City Gives Blessing to Pogo Mine
• Underground at Yankee Jim's
• A Gold Detector Sitting in a Closet Only Finds Dust—More Detector Tips
• Gold in Tennessee
• Old Stock Certificates—Treasures or Trash?
• Payette Forest Sides With Mining Company
• Using Mineral Deposit Models
• Miners Still Waiting for Bonding Recommendations from DOI
• The Old Mine Dump
• A Practical Approach to Dowsing
• Feds Release Opinion on Planned Mine Under Montana Wilderness
• The Lengendary Lost Gold of the Headless Valley
• Looking Back
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
