Clear translucent Libyan glass fully windblown.... Lot 5
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Clear translucent Libyan glass fully windblown. Impact glass (Libyan glass). Vitrification of a pure siliceous sand by the disintegration of a meteorite or a comet. Dating of the impact about 28 million years (Oligocene). Sahara, "great sea of sand". Length : about 7 x 6 x 5,5 cm. Weight : approx 147 g.
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