$1,200Median
1Sold (12 mo)
$1,200Last sale
Geocronite specimens for sale
15 for sale · $350–$3,500 USD
17 in the gallery
Geocronite is a sulfosalt mineral with a complex lead antimony arsenic sulfide composition. It typically forms opaque to submetallic crystals with a lacquered to adamantine lustre, often displaying a gray to brass-bronze color that can hint at its metallic chemistry. Crystals occur in compact masses or prismatic habits, and its association with sulfide-rich hydrothermal veins yields specimens that catch the eye for their dark, metallic sheen.
- Formula
- Pb14(Sb,As)6S23
- Rarity
- Rare
- Stability
- Stable
- Collector interest
- Very High Interest
- Classification notes
- Sulfosalts; lead-antimony sulfide group (Sulfosalts, sulfosalts with Sb/As)
Key characteristics
- Crystal system
- orthorhombic
- Mohs hardness
- 2.5–3
- Specific gravity
- 6.4–6.5
- Luster
- metallic
- Transparency
- opaque
- Color
- gray, black
- Streak
- gray, black
- Cleavage
- distinct
- Fracture
- uneven
- Crystal habit
- prismatic, tabular, granular, massive
Buy Geocronite specimens
View all 15Where Geocronite is found
Top localities
- Milpo mine8 specimens
- Atacocha Mine3 specimens
- Cerro de Pasco3 specimens
- Pollone Mine2 specimens
- Xanda Mine1 specimen
About Geocronite
Notable localities include Peru and Italy, with additional classic pockets in the Czech Republic and Brazil that have produced significant material for collections. Collectors prize geocronite for its rich color and the way light plays across its facets, revealing subtle hues beneath the surface. Although typically modest in size, well-formed crystals and richly textured masses from these localities can serve as striking centerpieces in a suite of sulfide minerals, offering contrast with lighter minerals in a display case. Its blade-like or stubby prismatic forms, when crisply terminated, add angular geometry that appeals to mineral enthusiasts seeking architectural specimens.
