$75Median
1Sold (12 mo)
$75Last sale
Tyrolite specimens for sale
10 for sale · $165–$3,000 USD
11 in the gallery
Tyrolite is a hydrated copper-arsenate hydroxide mineral that forms in secondary copper-rich environments. It typically occurs as green to blue, translucent crystals or botryoidal aggregates with a vitreous to pearly luster and a pale, occasionally satiny surface. Habit varieties include tabular, radiating, and botryoidal forms, often displaying a pleasant, glassy sheen and a softness that reflects its low hardness.
- Formula
- CaCu5(AsO4)2(CO3)(OH)4·6(H2O)
- Rarity
- Uncommon
- Stability
- Moderately Stable
- Collector interest
- High Interest
- Classification notes
- Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
Key characteristics
- Crystal system
- orthorhombic
- Mohs hardness
- 1.5–2
- Specific gravity
- 3.1–3.2
- Luster
- vitreous, pearly
- Transparency
- translucent
- Color
- green, blue
- Streak
- blue
- Cleavage
- perfect
- Fracture
- uneven
- Crystal habit
- botryoidal, tabular, radiating
- Classic / historic
Buy Tyrolite specimens
View all 10Where Tyrolite is found
Top localities
- Centennial Eureka Mine2 specimens
About Tyrolite
Notable specimens have come from copper deposits in Chile and China, with additional occurrences in the United States. The mineral’s composition and hydration make it a marker of alteration zones where copper and arsenate-bearing fluids interacted with carbonate or phosphate-bearing rocks. Collectors prize Tyrolite for its color range, delicate forms, and the way its blue streak under reflected light enhances the mineral’s visual appeal under display lighting. Its relatively rare occurrence adds to its desirability among specialists who seek hydrated copper-arsenates and minerals demonstrating interesting hydration-related morphology.
