
Supergene Gold Class 102 – Module 4
Title: Supergene Clues in Weathered Rock Textures
The most reliable clues to finding supergene gold may not sparkle — they crumble.
Supergene enrichment alters the host rock, creating telltale textures that signal where metals like gold have moved and redeposited. Field prospectors who can recognize these signs gain a powerful advantage in targeting shallow enrichment zones.
One of the most common features is crumbly limonite. When sulfide minerals like pyrite oxidize, they turn into red, brown, and yellow iron oxides. These zones often feel brittle and can break apart easily. If your fingers come away stained, you’re likely in a chemically altered zone.
Black manganese oxides also signal metal migration. They appear as dark coatings or soft crusts and often form where fluids once moved downward. Combined with limonite, they suggest supergene activity just below.
Weathered clay layers are another key. Acidic fluids can alter feldspars and other minerals into soft white or yellow clays like kaolinite. These zones are chemically active and often sit above gold enrichment layers.
Brecciated or shattered zones filled with silica also stand out. These may feel harder, but they are often laced with supergene minerals where fluids re-deposited gold in open spaces.
Pay attention to the transition zones. If you’re digging and notice a shift from soft oxidized rock to firmer, darker material — stop and sample. That’s often where enrichment begins.
Every change in texture is a story in stone. Read it right, and you’ll find where gold once moved… and where it now rests.
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Let me know when you’re ready to proceed with Module 5 – the 9-minute long-form conclusion for the Supergene Gold Class 102 series.
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