Tongbaite
A variety of Minerals
What is Tongbaite?
Tongbaite is a rare mineral that has the chemical formula Cr3C2, or chromium carbide. It was first described in 1983 for an occurrence in Liu village, Tongbai County (桐柏县), Henan Province, China and named for the locality. It occurs in an ultramafic rock deposit. It has also been reported from the Tibet Autonomous Region and from the Isovsky District in the Urals of Russia.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Tongbaite before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Quick Facts
Physical Properties
- Color
- Brownish yellow
- Hardness (Mohs)
- 8.5
- Rock tumbling
- Not recommended
Chemical Properties
- Chemical Formula
- Cr3C2
- Elements
- C, Cr
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Tongbaite FAQs
How do I identify Tongbaite?
Tongbaite can be identified by its hardness of 8.5 on the Mohs scale, Brownish yellow color. Look for these key characteristics when examining specimens.
What color is Tongbaite?
Tongbaite typically appears in Brownish yellow. Color can vary depending on impurities and formation conditions.
How hard is Tongbaite?
Tongbaite has a hardness of 8.5 on the Mohs scale. This makes it a relatively hard mineral suitable for jewelry.
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