Euchroite specimens for sale
5 for sale · $1,200–$12,500 USD
16 in the gallery
Euchroite is a copper arsenate mineral that crystallizes in blue to green hues and forms slender, prismatic crystals often seated on contrasting matrix. The mineral typically exhibits a vitreous to silky luster and can occur as well-formed aggregates, contributing to striking display pieces for a cabinet collection. Crystallization tends to produce delicate, transparent to translucent forms that highlight its color and habit, making it a favorite among collectors seeking unusual arsenates.
- Formula
- Cu2(AsO4)(OH) · 3H2O
- Rarity
- Rare
- Stability
- Moderately Stable
- Collector interest
- Moderate Interest
- Classification notes
- Arsenate mineral, hydrated arsenate with hydroxyl; Strunz 8.DC
Key characteristics
- Crystal system
- orthorhombic
- Mohs hardness
- 3.5–4
- Specific gravity
- 3.39–3.45
- Luster
- vitreous
- Transparency
- transparent, translucent
- Color
- green
- Streak
- green, white
- Cleavage
- good
- Fracture
- conchoidal, uneven
- Crystal habit
- prismatic, tabular, acicular, granular, massive
- Classic / historic
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Where Euchroite is found
Top localities
- Ľubietová2 specimens
About Euchroite
Notable localities include classic occurrences in Slovakia and the United States, where eucrhoite specimens have been described in sedimentary and hydrothermal settings associated with copper minerals. Specimens from these regions are sought after for their distinctive blue-green coloration and the fine, sharp termination of crystals. Collectors value euchroite for its rarity among copper arsenates and for the visual contrast it can provide when paired with other minerals in a display piece, offering an appealing window into secondary copper mineralogy and the diversity of arsenates.