$275Median
139Sold (12 mo)
$235Last sale
Chalcocite with Prehnite
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Metallic crystals of chalcocite to 0.1 cm in size scattered richly across the top of a botryoidal green prehnite crystal matrix. In good condition. A neat thumbnail specimen for this mining district.
Product details
SpeciesPrehnite, Chalcocite
SizeMiniature
Dimensions3.0 x 2.3 x 2.0 cm
Added on05/27/2026
LocalityUSA, Michigan, Keweenaw County
Current owner
Unknown Owner
- Acquired
- Oct 2026
Previous owners
| Date | Collector | Acquisition price |
|---|---|---|
| — | Weinrich Minerals | Not disclosed |
Learn more
Mineral guide
Learn about Prehnite
apple- to mint-green crystals and sculptural botryoidal/rosette forms; a calcium aluminum silicate formed in low-temp hydrothermal environments.Regional guide
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