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Columbia Hall Association Calumet Michigan 0019
Arnold mining co Keweenaw Michigan 0017
Orange Ahmeek Copper Mine Certificate Kew Michigan 0016
Michigan Copper Mining Company Stock Certificate 0015
Meadow Mining Company certificate Keweenaw Michigan mi 1899 .. 0014
Mohawk copper mining company certificate Keweenaw Michigan 1923 0007
Humboldt copper company Keweenaw Michigan 1904 - 0006
The Albion mining co of Eagle River Lake Superior Michigan 1845 005
Keweenaw Copper Co Keweenaw Michigan certificate 1922 0004
Delaware copper mining co certificate Keweenaw Michigan 1865 0003
The Henwood mines Michigan copper co certificate 0002
Portage lake mining company Michigan stock certificate 0001
3.5” Nice Blocky Copper Crystal Group w Green Matrix - Keweenaw, Michigan
Reddish-Brown Translucent Datolite Specimen - Mandan Gravel Pit, Copper Harbor,
6.5cm Fantastic Herringbone Style Copper Crystal Group - Central Mine, Michigan
Orange Datolite w Copper Flecks & Epidote - Franklin Jr Mine, Mich
Dark Red-Orange Datolite Pair - Franklin Jr Mine, Michigan
Silver Crystal Group - Copper Falls Surface Deposit (Prehnite Pit) Michigan
Green Prehnite Crystals In Basalt - Iroquois Mine, Keweenaw MI
