$170Median
57Sold (12 mo)
$50Last sale
Analcime with Copper
Help improve this record
No owner is registered for this specimen yet. If it's yours or you know more about it, you can add the owner, provenance, publications and other details.
Fairly large sharp crystal of analcime with crystallized native copper. In good condition, nice miniature for the species and locality. Collected in 1998.The Seneca #3 Mine, located in Keweenaw County, Michigan, was part of the historic copper mining operations north of Mohawk in Allouez Township. Initially developed around the early 1900s (with major corporate operations spanning periods such as 1909 to 1921 and later reactivations), the broader Seneca properties experienced intermittent production before final operations permanently ceased in 1966. Geologically, the mine is situated on the Keweenaw Peninsula's rich native-copper bearing strata, specifically targeting the Kearsarge Amygdaloid lode, a prominent basaltic lava flow top characterized by native copper deposits filling ancient vesicular cavities and fractures.
Product details
Current owner
Unknown Owner
- Acquired
- Sep 2026
- Price paid
- $40.00
Previous owners
| Date | Collector | Acquisition price |
|---|---|---|
| — | Weinrich Minerals | Not disclosed |
Learn more
Mineral guide
Learn about Analcime
trapezohedral crystals in basalt cavities and alkaline rocks; colorless to white, sometimes pink, prized for crisp geometry and broad localities.Regional guide
Comments