Story perspectives

Brazil Uncovers New Tektite Field, Revealing Ancient Impact History

2/26/2026

Summary

Story summary

Researchers in Brazil identified a new field of tektites called geraisites in Minas Gerais, the first tektites found in Brazil.
The tektites formed from molten material during a significant impact about 6.3 million years ago and cover over 90 kilometers.
Researchers have collected more than 600 specimens, varying in size and shape.
Isotopic analysis suggests the material originates from ancient continental crust, informing South America’s impact history.

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Story summary

Researchers in Brazil identified a new field of tektites called geraisites in Minas Gerais, the first tektites found in Brazil.
The tektites formed from molten material during a significant impact about 6.3 million years ago and cover over 90 kilometers.
Researchers have collected more than 600 specimens, varying in size and shape.
Isotopic analysis suggests the material originates from ancient continental crust, informing South America’s impact history.