Libyan glass Impactite - Lot 442

Lot 442
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Estimation :
250 - 300 EUR
Libyan glass Impactite - Lot 442
Libyan glass Impactite Silicon dioxide SiO2 amorphous 5 cm about 77 g Natural glass coming from a pure siliceous sand Presumed vitrified by the disintegration of a comet entering the atmosphere Dating of the impact about 28 million years ago Sahara
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