Rheniite
Rheniite is a rare selenium sulfide mineral with the formula ReS2. It forms as metallic, lustrous crystals that often exhibit a gray to dark steel hue and a layered, anisotropic habit. The mineral’s structure features rhenium bonded to sulfur in a way that gives it a characteristic rigidity and a bright metallic shine when freshly cut or cleaved. Specimens are typically small but highly prized for their rarity and the presence of rhenium, a dense and uncommon element in deep, sulfide-rich assemblages.
- Formula
- ReS2
- Rarity
- Rare
- Stability
- Stable
- Collector interest
- Very High Interest
About Rheniite
Notable specimens have come from Russia, where late-stage hydrothermal or magmatic processes can concentrate rhenium in sulfide phases. Collectors appreciate Rheniite for its scarcity and the intrigue of a mineral containing one of the rare heavy transition metals. The combination of a striking metallic appearance, localities tied to specialized geochemical environments, and the scientific interest surrounding rhenium-bearing sulfides makes Rheniite a sought-after addition to mature cabinets and reference collections.