$650Median
4Sold (12 mo)
$550Last sale
Cubanite specimens for sale
9 for sale · $200–$7,000 USD
25 in the gallery
Cubanite is a copper iron sulfide mineral that crystallizes in the cubic system and commonly forms metallic, opaque crystals with a dark brass to black coloration and a metallic to submetallic luster. It often occurs in granular aggregates and massives, and can display a scarce, high-reflectivity sheen when exposed to light. Localities such as Canada, Brazil, Russia, South Africa, and the United States have produced notable cubanite specimens, frequently associated with hydrothermal ore veins and other sulfide minerals.
- Formula
- CuFe2S3
- Rarity
- Common
- Stability
- Moderately Stable
- Collector interest
- Moderate Interest
- Classification notes
- Sulfide mineral; copper-iron sulfide (CuFe2S3)
Key characteristics
- Crystal system
- orthorhombic
- Mohs hardness
- 3.5–4
- Specific gravity
- 4.03–4.18
- Luster
- metallic
- Transparency
- opaque
- Color
- yellow, brown
- Streak
- black
- Cleavage
- poor
- Fracture
- uneven
- Crystal habit
- prismatic, tabular, granular, massive
Buy Cubanite specimens
View all 9Where Cubanite is found
Top localities
- Henderson No. 2 mine12 specimens
- Chibougamau4 specimens
- Morro Velho mine2 specimens
About Cubanite
Collectors value Cubanite for its distinctive metallic look and its occurrence with other sulfide minerals in rich ore contexts. While not among the most common sulfides, well-formed crystals or well-documented habit in specific localities can be highly sought after by those building a cubanite-focused cabinet or seeking regional mineral associations. Its presence alongside copper-rich sulfides adds interest for display and study, making cubanite a worthwhile addition to a varied collection.
