One of the world's oldest orbicular granites is in India: The 2.56-billion-year-old Pichhore rock is baffling scientists with its mysterious spherical structures

A new study published in the journal Geosystems and Geoenvironment has identified the 2.56-billion-year-old Pichhore orbicular granite in Madhya Pradesh as one of the world's oldest known orbicular granites. The ancient rock has drawn geologists' attention because of its unusual spherical structures, known as orbicules, which are rarely found anywhere in the world.

Raccontata datimesofindia.indiatimes.com