KhmerTimes-Sept 29, 2026

Archaeologist Thuy Chanthourn has reported discovering more than three kilograms of gold-colored metal after smelting a 14.66-kilogramme sample of ancient iron ore. The metal is being prepared for laboratory analysis to determine its composition. In an interview with Khmer Times last weekend, he said the experiment was a personal research initiative aimed at understanding the composition of ore samples recovered from ancient iron-mining sites and identifying Khmer smelting techniques. Chanthourn began researching the ancient Khmer iron industry in 2010 and has identified more than 700 mining sites across the country. His work contributed to the establishment of the Royal Academy of Cambodia’s Techo Sen Russey Treb Park in Preah Vihear province. For this experiment, he selected a northern Cambodian ore sample weighing approximately 14.66 kilograms, broke it into smaller pieces and smelted it in a furnace reaching 1,200 degrees Celsius. After eight hours of heating and gas supply, he poured the molten material into a mold. When cooled and broken open, it revealed a reddish-yellow metal resembling gold and weighing more than three kilograms. A preliminary acid test suggested the presence of metallic elements, but Chanthourn stressed that visual inspection and basic testing cannot confirm pure gold. He is contacting the Royal University of Phnom Penh for scientific analysis. The original sample separated into several materials, with the gold-like portion weighing more than three kilograms and the remainder consisting of iron-based metals and other substances. Chanthourn emphasised that the findings are preliminary and require further analysis.

The experiment, he said, deepened his appreciation for the technical capabilities of the ancient Khmer in mineral and metal processing. His research indicates that Khmer communities utilized iron before the Angkorian era, with production techniques dating to around AD 760. “Khmer people of that time possessed truly advanced techniques. Yet, even in modern times, we have not been able to match the capabilities of our ancestors,” he said. Chanthourn explained that ancient Khmer iron was used for construction, stone cutting, canal excavation and major projects. Read more at:

https://www.khmertimeskh.com/502032096/archaeologist-discovers-gold-like-metal-in-ancient-khmer-ore/