mineraloid

Tektite (Indochinite)

Impact Glass (SiO2 + Al2O3)

Hardness: 5.5-6.5 Mohs; Color: Black, dark bottle green when held to light; Luster: Vitreous (glassy); Structure: Amorphous (non-crystalline); Specific Gravity: 2.3-2.5.

Hardness: 5
Color: Black, dark bottle green when held to light
Luster: Vitreous (glassy)

Identified June 8, 2026More mineraloid →

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Physical properties

Hardness: 5.5-6.5 Mohs; Color: Black, dark bottle green when held to light; Luster: Vitreous (glassy); Structure: Amorphous (non-crystalline); Specific Gravity: 2.3-2.5.

Formation & geological history

Formed from terrestrial debris ejected into the atmosphere during a meteorite impact, which cooled rapidly back to Earth. Indochinites are part of the Australasian strewn field, dated to approximately 700,000-800,000 years ago.

Uses & applications

Primarily collected as geological specimens, used in metaphysical jewelry, and studied by researchers to map prehistoric meteorite impact events.

Geological facts

Tektites are unique because they are almost entirely dry, containing much less water than volcanic glass like obsidian. The Indochinite strewn field is the largest on Earth, covering much of Southeast Asia and Australia.

Field identification & locations

Identify by its pitted, 'leathery' surface texture (sculpting), lack of crystals, and translucency on thin edges. Found in Southeast Asia, China, and Australia. Look for aerodynamic shapes like teardrops or buttons.