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6 results for “XRF analysis” in Industry
Industry · 7 August 2026
How Fake Gold Is Detected
…is within a fraction of a percent of gold's, defeating simple weight-and-volume checks. · XRF is fast, non-destructive and reads only the outer tens of microns — it validates surface composition, never the interior. · Ultrasonic velocity testing is the standard front-line defence…
Tomas Herrera · 15 min read
Industry · 6 August 2026
The Scrap Trade
…the contained gold; specialist refiners buying 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…
Ingrid Sørensen · 15 min read
Industry · 7 August 2026
After the Cyanide
Every ounce of mined gold leaves behind roughly a tonne of processed rock and the water that carried it. What happens to that material after the last shift is the part of the industry with the longest…
Tomas Herrera · 17 min read
Industry · 2 July 2026
Nine Nines: Inside a Modern Gold Refinery
A doré bar arrives at 85 per cent purity and leaves at 99.99. Between those two numbers sit chlorine gas, aqua regia, an electrolytic cell and a chain of custody that is now as valuable as the metal i…
Tomas Herrera · 12 min read
Industry · 4 August 2026
The Gold Inside Your Phone
Industrial demand is the quietest third of the gold market: a few tenths of a gram per handset, multiplied by billions of devices, chosen not for prestige but because nothing else conducts as reliably…
Tomas Herrera · 15 min read
Industry · 28 July 2026
Urban Mining: The Richest Gold Ore on Earth Is in Your Old Phone
A tonne of good underground ore holds a few grams of gold. A tonne of discarded circuit boards can hold two hundred. So why is most of it still going into landfill? · Concentration, not tonnage, is wh…
Tomas Herrera · 13 min read
