mineraloid

Tektite (Indochinite)

Tektite (High-silica natural glass)

Hardness: 6-7 on Mohs scale; Color: Black, dark green or brown; Luster: Vitreous (glassy); Crystal Structure: Amorphous; Cleavage: None (conchoidal fracture); Specific Gravity: 2.3-2.5

Hardness: 6-7 on Mohs scale
Color: Black, dark green or brown
Luster: Vitreous (glassy)

Identified June 30, 2026More mineraloid →

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Physical properties

Hardness: 6-7 on Mohs scale; Color: Black, dark green or brown; Luster: Vitreous (glassy); Crystal Structure: Amorphous; Cleavage: None (conchoidal fracture); Specific Gravity: 2.3-2.5

Formation & geological history

Formed by the rapid heating and cooling of terrestrial silica-rich sediment ejected into the atmosphere during a meteorite impact. Most Indochinites are approximately 700,000 to 800,000 years old.

Uses & applications

Primarily used for gemstone jewelry, metaphysical collecting, and as scientific specimens for studying meteorite impacts.

Geological facts

Tektites are unique because they are almost entirely dehydrated, containing significantly 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

Identified by its pitted, aerodynamically sculpted surface (leathery texture) and glassy black appearance. Found in the 'strewn fields' of Southeast Asia, particularly Thailand, Vietnam, and China. Collectors should look for the characteristic 'pitted' or 'dimpled' surface.

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