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Hhound42

A way of collecting gold grains from streams used sheep fleeces attached to wood frames. The frames were submerged in streams where grains of gold were being carried downstream from gold deposits in the mountains, then the fleeces were dried and the gold collected. From ScienceNews Nov 2014 :Jason and the Argonauts’ mythic quest for the Golden Fleece took inspiration from an actual voyage sometime between 3,300 and 3,500 years ago, scientists say. Jason went from Greece to a kingdom near the Black Sea renowned for using sheepskins to collect gold grains and flakes from mountain streams. Mountain streams in the Svaneti region of Georgia carry bits of gold and gold-specked gravel that erode out of bordering rock formations, say geologist Avtandil Okrostsvaridze of Ilia State University in Tbilisi, Georgia, and his colleagues. The locals are still using this technique to collect gold.