mineral

Tektite (Indochinite)

Tektite (natural glass, SiO2 + Al2O3)

Hardness: 5.5-6.5 (Mohs scale); Color: Black, dark green or brown when backlit; Luster: Vitreous to dull; Crystal structure: Amorphous (non-crystalline glass); Specific Gravity: 2.3-2.5

Hardness: 5
Color: Black, dark green or brown when backlit
Luster: Vitreous to dull

Identified April 22, 2026More mineral →

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Physical properties

Hardness: 5.5-6.5 (Mohs scale); Color: Black, dark green or brown when backlit; Luster: Vitreous to dull; Crystal structure: Amorphous (non-crystalline glass); Specific Gravity: 2.3-2.5

Formation & geological history

Formed from terrestrial debris ejected into the atmosphere during a meteorite impact and cooled into glass as it fell back to Earth. Indochinites are part of the Australasian strewn field, dated to approximately 790,000 years ago.

Uses & applications

Primarily used as collector specimens, in metaphysical practices, and occasionally carved into jewelry or beads.

Geological facts

The word tektite comes from the Greek word 'tektos', meaning molten. Despite their appearance, they are not meteorites themselves, but the result of the Earth's surface melting and splashing into space during an impact.

Field identification & locations

Identify by the characteristic 'pitted' or 'dimpled' surface (lechatelierite inclusions often present). They are commonly found across Southeast Asia (Thailand, Vietnam, Cambodia). Search in fields or areas with high erosion.

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