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Prospecting & Detecting

Hard Rock Milling: A Matter of Scale

Most prospectors understand placer mining a lot better than hard rock mining and don’t realize the amount of work that goes into processing different types of hard rock ore.

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Putting Together A Small Free Gold Mill—Part II


There are many smaller old hard rock mines out there—more than you might think. There are some small hard rock properties that are even open to be claimed if one does the right amount of research to find them.

Gold in Quartz


Because quartz and gold may be deposited together across a considerable range of temperatures, not all quartz veins are the same, and there are several different types of gold-quartz deposits.

Twenty Minutes on a Five-inch Dredge


The first thing I realized was this was not a toy—this thing had power and I needed to really pay attention. I got into position, took a deep breath, and pushed that monster into the hard pack.

Moore Creek, Alaska—Then and Now


The gold was very chunky and much of it had quartz attached. Even back then I knew that the gold was very close to its source.

Drywashing in Black Canyon, Arizona


After the hike and a quick snack break we gathered a few buckets of material to really dial in the drywasher for the most efficient recovery. This involves leveling the unit, setting the riffle box drop angle and regulating the speed in which the material is processed.

The Half-Mile Claim


We dug and extracted for two more hours. This time, as I dumped the concentrates, I saw a piece of gold three-fourths of an inch long and as big around as a pencil.

Hunting for Gold in the Quartzsite Area of Western Arizona


Winters are a great time to explore the hills in the area of the Middle Camp, Oro Fino and La Cholla placers on the southern flank of the Dome Rock Mountains.

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The Bawl Mill   • Ask the Experts - processing plants that can extract rare earth metals   • Ask the Experts - what does MDB&M stand for?   • Ask the Experts - proper mining claim procedures   • The Hughes Creek Placers, Montana   • Benefits of a Detecting Partner   • Excavator Testing Wet Placer Ground   • Paperwork Guy—A Cautionary Tale   • ICMJ Online Forum Now Available   • Detecting For Gold—Are You Up For It?   • A Trip Down the Yukon River   • Selenium, Mercury and Suction Dredging—Studies Contradict CA State Water Resources Board   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices

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