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5 Piece Lot of Copper Chisel Chips 2.5-5” - Cliff Mine, Keweenaw, Michigan
5.3oz 12 Piece Lot of Copper Nuggets w Colorful Matrix - Keweenaw, Michigan
2.7” Green Prehnite w Copper Crystals & Basalt - Iroquois Mine, Keweenaw, Mich
Huge 12.5 Inch Native Sheet Copper Specimen w Perfect Striations - White Pine MI
Fantastic Golden Mohawkite Slab Algodinite Domeykite, Mohawk, Keweenaw, Michigan
1lb 2.9oz Big Razor Sharp Native Copper w Calcite-Casting- Quincy Mine, Michigan
Grand Rapids Mining and Smelting Co Michigan 0120
Awesome Dendritic Copper Crystal Group- Mohawk Mine, Keweenaw, Michigan
Beautiful Peach Colored Datolite - Quincy Copper Mine, Michigan
Neat Curved Glacial Gloat Copper Nugget prospected from Keweenaw, Michigan
Pink Quartz Crystal Group w Green Epidote - Osceola Copper Mine, Michigan
Gorgeous Dark Red Datolite Specimen - Delaware Mine, Keweenaw, Michigan
Calumet and Hecla Purple Mi
Winona Copper Co Brown Certificate Houghton Mi
Winona Copper Co Houghton Michigan 0137
Algomah Mining Co Ontonagon Michigan 0067
Sharp Crystallized Native. Copper in Quartz & Prehnite Matrix -Keweenaw Michigan
Big 10 Inch Native Copper Specimen prospected from Keweenaw, Michigan
4.6oz Crystallized Native Copper w Green Prehnite - Iroquois Mine, Keweenaw Mich
Seneca Mining Co Keweenaw Michigan Stock Certificate 0141
Mohawk Mining Co Blue Certificate Keweenaw Michigan 0139
10.3oz Very Dense Glacial Float Copper Nugget w Natural Green Patina - Michigan
3.25” Pretty Native Copper Specimen w Natural Matrix - Keweenaw, Michigan
Mayflower - Old Colony Copper Co Calumer Mi 0034
