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Lode or Placer: What Difference Does It Make?

This explains the large difference in particle sizes between placers and hydrothermal lode deposits, but also means that while the mining may be similar in some cases, the sampling and recovery techniques are usually quite different.

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PLP Update: The Path for Legally Re-Starting Suction Gold Dredge Mining in 2021


Present conflicts and realizations having to do with dependence on China have illuminated the fact that suction dredge miners have a vital role to play and are an ignored and untapped domestic resource—until now.

The Seven Troughs Mining District


The favorable geology of the northeastern and central parts of the Seven Troughs Range are the parts most interesting to prospectors. They are underlain by a thick sequence of Tertiary volcanic rocks, mostly rhyolites and andesites.

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Montana Gold and Sapphires Revisited


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Proper Assaying of Placer Samples


The whole purpose of sampling mineralized ground is to measure the values in a small volume of material that would be representative of a much larger volume of similar material. The key word is representative. Chemical and fire assaying will not accurately represent placer deposits by themselves.

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