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6 results for “late veneer hypothesis” in Industry
Industry · 6 August 2026
The Scrap Trade
…ying in volume pay far closer to it. · Handheld XRF reads the surface only, which is why plated and filled items are caught by density checks, file tests or a destructive assay. · Recycled gold is chemically identical to mined gold after refining — the distinction survives only a…
Ingrid Sørensen · 15 min read
Industry · 7 August 2026
How Fake Gold Is Detected
…a bar? No. X-ray fluorescence excites atoms only in the outermost tens of microns, so a plated or shelled fake reads as pure gold. XRF is excellent for detecting alloy fraud in jewellery and for confirming surface fineness; it is structurally incapable of seeing a core. · What d…
Tomas Herrera · 15 min read
Industry · 2 July 2026
Nine Nines: Inside a Modern Gold Refinery
…peed: a Miller run takes roughly ninety minutes to two hours per charge. Ceiling: purity plateaus around 99.5 per cent — good, and not good enough. Limitation: platinum-group metals do not chlorinate usefully and remain in the gold. Byproduct: silver chloride skim is reduced and…
Tomas Herrera · 12 min read
Industry · 4 August 2026
The Gold Inside Your Phone
…disappears when someone wiggles the plug. Gold does not form these films at all. A gold-plated contact behaves in year fifteen approximately as it did on the assembly line. · We are not buying conductivity. Copper wins on conductivity. We are buying the guarantee that the surfac…
Tomas Herrera · 15 min read
Industry · 28 July 2026
Urban Mining: The Richest Gold Ore on Earth Is in Your Old Phone
…nt individually. The economics only work in bulk: it takes thousands of handsets to accumulate a meaningful quantity, which is why collection logistics dominate the business model. · Is e-waste really richer than gold ore? By concentration, frequently yes. Modern underground ore…
Tomas Herrera · 13 min read
Industry · 7 August 2026
After the Cyanide
…ed by bonds; where bonds are underpriced, the shortfall lands on the public purse decades later. · Why is cyanide used to extract gold? Because gold in ore is present at parts per million and locked in rock. A dilute alkaline cyanide solution — typically well under 0.05% — dissol…
Tomas Herrera · 17 min read
