The book had a chapter on “Secondary Dispersion.” While the geophysicists looked for the body of the ore, geochemists looked for its soul . The massive sulfide deposit she was hunting—a deep, blind VMS system—was long gone at the surface, eaten by acid and rainwater. But its chemical ghost remained. Copper, zinc, and lead had been stripped from the primary ore, traveled upward as ions, and been trapped in the iron oxides of the laterite.
The Ghost Anomaly
Elara didn’t answer. She was staring at a single, fist-sized piece of quartz lying in a dry stream bed. It wasn’t the quartz that mattered; it was the faint, rusty stain along a hairline fracture. geochemistry in mineral exploration rose pdf
“Nothing,” said Kwame, her field assistant, kicking a crumbling nodule. “The geophysics gave us a nice magnetic high, but the drill came up empty. Just this… red garbage.” The book had a chapter on “Secondary Dispersion
They drilled the bullseye. At 312 meters, they hit a massive sulfide lens grading 4% copper, 6% zinc, and 45 grams per tonne silver. Copper, zinc, and lead had been stripped from