Australite Button — Fragment

$125.67
Chemical FormulaSilica glass (tektite)
Crystal System
Mohs Hardness5.5
Specific Gravity2.38–2.40
LusterVitreous
TransparencyTransparent

Australites are tektites from the Australasian strewn field — impact glass formed 780,000 years ago, likely from a Southeast Asian impact. The distinctive ‘button’ shape — a disk w…

30 in stock

SKU: TC-MET-0766
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Description

Every mineral is a story of chemistry, pressure, and patience. Australites are tektites from the Australasian strewn field — impact glass formed 780,000 years ago, likely from a Southeast Asian impact. The distinctive ‘button’ shape — a disk with a flanged rim — formed as the glass sphere re-entered the atmosphere at an oblique angle, partially melting and being sculpted by atmospheric pressure into this aerodynamic form. They are natural atmospheric re-entry vehicles.

This specimen originates from South Australia, one of the world’s most significant localities for this type of material. Collectors and scientists have drawn from this region for generations, and for good reason: the combination of geological conditions here produces specimens of exceptional quality and clarity.

Every specimen is unique. Photographs approximate the visual experience, but the real thing — its weight, its luster under a raking light, the way it catches the corner of your eye — can only be experienced directly.

Formation

This material formed outside Earth’s atmosphere, in the early solar system. Its arrival on Earth was the conclusion of a journey billions of years and hundreds of millions of kilometers in the making — from protoplanetary accretion to atmospheric entry to the ground beneath your feet.

Locality

Australite Button — Fragment from South Australia. This locality is known for producing specimens of exceptional quality.

Collector Notes

Best displayed where natural light can play across the surfaces at different times of day.