mineraloid

Tektite (Indochinite)

Tektite (High-silica impact glass)

Hardness: 6-7 (Mohs scale); Color: Black (appears dark green/brown on thin edge); Luster: Vitreous to dull; Crystal structure: Amorphous (non-crystalline glass); Cleavage: None (conchoidal fracture); Specific gravity: 2.3-2.5

Hardness: 6-7 (Mohs scale)
Color: Black (appears dark green/brown on thin edge)
Luster: Vitreous to dull

Identified March 22, 2026More mineraloid →

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Physical properties

Formation & geological history

Formed from terrestrial debris ejected into the atmosphere during a meteorite impact and flash-cooled upon re-entry. Indochinites originate from the Australasian strewn field, dated to approximately 790,000 years ago.

Uses & applications

Primarily used for gemstone jewelry (faceted or cabochon), metaphysical/spiritual collection, and scientific study of impact events.

Geological facts

Tektites contain almost no water (less than 0.005%), making them some of the driest glass on Earth. The name comes from the Greek word 'tektos', meaning molten.

Field identification & locations

Identify in the field by its pitted, scalloped surface (aerodynamic ablation) and glass-like fracture. Often found in Southeast Asia, Australia, and parts of the USA (Texas/Georgia). Collectors look for unique shapes like teardrops or buttons.

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