Copper
specimen number:
1791295
location:
Keweenaw Peninsula, Michigan, USA
description: The copper mining history of the Keweenaw Peninsula and the broader Upper Peninsula of Michigan spans thousands of years, beginning with pre-Columbian indigenous mining and culminating in a massive industrial boom in the 19th and 20th centuries. Geologically, the region is defined by the Midcontinent Rift System, featuring a thick sequence of Keweenawan-age basaltic lava flows and interbedded sedimentary rocks. Unlike most global mining districts that extract copper oxides or sulfides, the central Keweenaw is globally unique for its vast deposits of exceptionally pure native copper housed within amygdaloidal basalt flows and conglomerates.
Nice crystallized grouping of native copper without matrix. In great condition.
Questions about this specimen?
Send an email
or call us: 314-341-1811.
See More
Related by Mineral (Copper):
Copper — Kazakhstan
Origin: Itauz Mine, Zilandy, Satpayev, Ulytau, Kazakhstan
Number: (8911225)
Size: 3.0 x 1.8 x 0.5 cm (thumbnail)
Copper — Kazakhstan
Origin: Dzezkazgan, Karaganda, Kazakhstan
Number: (9273164)
Size: 7.0 x 4.0 x 1.3 cm (small-cabinet)
Copper — Michigan
Origin: Quincy Mine, Houghton Co., Michigan, USA
Number: (8311351)
Size: 18.0 x 16.0 x 6.0 cm (large-cabinet)
Related by Location (Keweenaw Peninsula):
Copper — Michigan
Origin: Keweenaw Peninsula, Michigan, USA
Number: (8311039)
Size: 6.0 x 4.0 x 3.0 cm (small-cabinet)
Copper — Michigan
Origin: Keweenaw Peninsula, Michigan, USA
Number: (2062338)
Size: 3.0 x 2.5 x 1.5 cm (thumbnail)
Copper — Michigan
Origin: Keweenaw Peninsula, Michigan, USA
Number: (2013516)
Size: 11.0 x 5.5 x 4.5 cm (cabinet)