Let us help you recover valuable metals. 888-437-1187


Ask The Experts

Ask The Experts

Q: I read your articles about gold in quartz with great interest. We have a hard rock mine in Montana that produces gold in small pockets of high grade ore along a contact zone. Much of it is in quartz. The attached photo is representative of how the gold is deposited.
I used the formulas that were included in your article to evaluate several specimens and the results were extremely interesting. I had tried previously to estimate how much gold was in the rock but they were uneducated guesses at best. With these formulas I can now get a reasonable estimate based on science. It’s not perfect, because not all of the rock is either gold or quartz, but pretty close. I really enjoy the magazine and usually read it cover to cover the day it comes. Kudos. I am planning to attend the Prospecting and Mining Summit and am enrolled in the hard rock field training on April 18th. Maybe I’ll get a chance to meet you there? Looking forward to it.
     Bill Stiles
A: I will certainly be at the show in Placerville, and I am always happy to chat with our readers and other folks who are there. That said, during the show I am constantly running around trying to cover all the bases I need to take care of and giving talks on mining related topics. Please be sure to stop me and say hello when you get the chance. I will not be at the hard rock field training as I will be assisting at the placer training event a few miles away on that day.
When there is a significant amount of other minerals in your specimen, the gold estimate is not very accurate because the formula allows only for gold and quartz, not other minerals. Significant amounts of other minerals will result in an over-estimate of the amount of gold in the specimen. 
     Chris Ralph
© ICMJ's Prospecting and Mining Journal, CMJ Inc.
Next Article »« Previous Article

Add a Comment

Additional articles that might interest you...

Our Readers Say

Ask The Experts - How do gold and silver stocks react in market crashes?

Ask the Experts: gold per ton; improving assay method

Q: How much gold do I have per ton and how can I improve my assay method?

Ask the Experts

What are the tell signs of garnet deposits?

Ask The Experts

• Determining the amount of gold in a specimen

Ask the Experts - Old workings & tailings: What are my options?

Q: ...It’s a 2,000-acre property that was mined 100 years ago, still has the old workings, tailings, etc. I am looking to recover gold from the old waste/tailings... plus possibly strip mine some of it. What are my options?

Ask the Experts

Gold out of auqa regia

Subscription Required:
The Bawl Mill   • Legislative and Regulatory Update   • Ask The Experts   • Ask The Experts   • Ask The Experts   • How to Stake Your Own Mining Claims—Part I   • Addressing EPA Overreach: What Dredgers Need to Know   • Green Valley Gold District, Payson, Arizona   • Nevada's Silver City Gold District—Part I   • Enrichment of Mineral Deposits by Weathering—Part I   • Alaska: Kodiak Islands Mineral Resources   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices

MMAC & PLP Update


Garrett Electronics - trusted by real miners & prospectors!
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