Tyrolite
A variety of Minerals
What is Tyrolite?
Tyrolite is a hydrated calcium copper arsenate carbonate mineral with formula: CaCu5(AsO4)2CO3(OH)4·6H2O. Tyrolite forms glassy blue to green orthorhombic radial crystals and botryoidal masses. It has a Mohs hardness of 1.5 to 2 and a specific gravity of 3.1 to 3.2. It is translucent with refractive indices of nα=1.694 nβ=1.726 and nγ=1.730. It is a secondary mineral formed by the weathering of associated copper and arsenic minerals. It was first described in 1845 for an occurrence in Schwaz, Tyrol, Austria.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Tyrolite 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.
Tyrolite Localities Map
See where Tyrolite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
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Quick Facts
Physical Properties
- Color
- Turquoise-blue, blue-green; light bluish green in transmitted light.
- Hardness (Mohs)
- 1.5 - 2
- Density
- 3 - 3.2 g/cm³
- Streak
- Paler than unpowdered colour.
Chemical Properties
- Chemical Formula
- Ca2Cu9(AsO4)4(CO3)(OH)8 · 11H2O
- Elements
- As, C, Ca, Cu, H, O
Also Known As
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Tyrolite FAQs
How do I identify Tyrolite?
Tyrolite can be identified by its hardness of 1.5 - 2 on the Mohs scale, Turquoise-blue color. Look for these key characteristics when examining specimens.
What color is Tyrolite?
Tyrolite typically appears in Turquoise-blue, blue-green; light bluish green in transmitted light.. Color can vary depending on impurities and formation conditions.
How hard is Tyrolite?
Tyrolite has a hardness of 1.5 - 2 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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