Gehlenite
A variety of Minerals
What is Gehlenite?
Gehlenite, (Ca2Al[AlSiO7]), is a sorosilicate, Al-rich endmember of the melilite complete solid solution series with akermanite. The type locality is in the Monzoni Mountains, Fassa Valley in Trentino in Italy, and is named after Adolf Ferdinand Gehlen (1775–1815) by A.J. Fuchs in 1815.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Gehlenite 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.
Gehlenite Localities Map
See where Gehlenite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- yellow-brown, colourless, greenish grey
- Hardness (Mohs)
- 5 - 6
- Streak
- white, grey-white
Chemical Properties
- Chemical Formula
- Ca2Al(AlSiO7)
- Elements
- Al, Ca, O, Si
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Gehlenite FAQs
How do I identify Gehlenite?
Gehlenite can be identified by its hardness of 5 - 6 on the Mohs scale, yellow-brown color. Look for these key characteristics when examining specimens.
What color is Gehlenite?
Gehlenite typically appears in yellow-brown, colourless, greenish grey. Color can vary depending on impurities and formation conditions.
How hard is Gehlenite?
Gehlenite has a hardness of 5 - 6 on the Mohs scale. This gives it moderate hardness.
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