Teruggite
A variety of Minerals
What is Teruggite?
Teruggite is a mineral with the chemical formula Ca4MgAs2B12O22(OH)12·12H2O. It is colorless. Its crystals are monoclinic prismatic. It is transparent. It is not radioactive. It has vitreous luster. Teruggite is rated 2.5 on the Mohs Scale of hardness.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Teruggite 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.
Teruggite Localities Map
See where Teruggite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Colourless to white
- Hardness (Mohs)
- 2.5
- Density
- 2.139 g/cm³
Chemical Properties
- Chemical Formula
- Ca4Mg[AsO4]2[B6O7(OH)6]2 · 12H2O
- Elements
- As, B, Ca, H, Mg, O

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Teruggite FAQs
How do I identify Teruggite?
Teruggite can be identified by its hardness of 2.5 on the Mohs scale, Colourless to white color. Look for these key characteristics when examining specimens.
What color is Teruggite?
Teruggite typically appears in Colourless to white. Color can vary depending on impurities and formation conditions.
How hard is Teruggite?
Teruggite has a hardness of 2.5 on the Mohs scale. This makes it a soft mineral that can be scratched easily.


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