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
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Physical properties
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
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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