Ask The Experts - Is platinum usually magnetic?
July 2021 by Chris Ralph
Q: Is this gold or some other metal?
Q: I would like to know how to use a classifier when I dump my gravel into my sluice box. I would also like to know what sizes classifiers come in. I know that they are in sizes like -3/4. What does the “minus” in the size mean? Thanks for any help you can give me.
What are these rocks?
• Determining the amount of gold in a specimen
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