Sarytogan’s soil sampling in Kazakhstan has defined three new multi-element anomalies with strong copper emphasis at Aminbay, ...

Deep beneath Rome’s Domus Aurea, archaeologists have unearthed a rare ingot of Egyptian blue — the world’s first synthetic ...

This monstrous specimen, which came to an untimely end ... libethenite and pseudo-malachite,each of which melts readily before the blow-pipe. It was therefore natural to suppose that a salt ...

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Obsidian was also a key trade commodity, often exchanged for items like salt, jade, and malachite. (1−3) In Mexico, kaolin deposits are widely distributed, with major deposits located in states such ...