Sperrylite

Sperrylite specimens for sale

4 for sale ยท $730โ€“$6,000 USD

57 in the gallery

Sperrylite is a platinum-arsenide mineral with a metallic luster and a typically dense, often euhedral to subhedral crystal habit. Crystals commonly display a bright, silvery-gray appearance and can occur in complex aggregates that reflect light from multiple faces. The mineral crystallizes in the isometric system and is frequently associated with other platinum-group minerals in ultramafic hosts and hydrothermal sulfide assemblages.

Formula
PtAs2
Rarity
Rare
Stability
Stable
Collector interest
High Interest
Classification notes
Arsenide; Pt-As binary (Strunz: 2.AA)

Key characteristics

Crystal system
isometric
Mohs hardness
6โ€“7
Specific gravity
10.6
Luster
metallic
Transparency
opaque
Color
white, gray
Streak
gray, black
Cleavage
none
Fracture
conchoidal, uneven
Crystal habit
cubic, octahedral, dodecahedral, granular, massive
  • Classic / historic

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Where Sperrylite is found

About Sperrylite

Notable specimens come from ultramafic and layered intrusion environments in Russia, Canada, and South Africa, where it occurs alongside other platinum-group minerals and sulfide phases. Collectors prize Sperrylite for its rarity and its crisp, well-formed crystals that can exhibit attractive reflective surfaces and sharp edges. The combination of high metallic luster, rarity, and classical locality associations makes Sperrylite a sought-after target for display-quality mineral specimens and for reference in platinum-group mineral studies.