Michigan!
A group of specimens mostly from Michigan's Upper Peninsula, specifically the mineral rich Keweenaw peninsula that just out into Lake Superior from the larger Upper Peninsula. There are a couple specimens from Arizona copper mining district as well.
List
Grid
UPM01 Copper
Pewabic Mine, Pewabic, Houghton Co., Michigan, USA
10.8x 6.6x 4.5 cm
UPM02 Copper
White Pine Mine, White Pine, Ontonagon Co., Michigan, USA
39.4x 10.4x 7.8 cm
$3800
UPM03 Copper in Calcite
Quincy Mine, Hancock, Houghton Co., Michigan, United States
5.6x 4.2x 5.0 cm
$1300
UPM04 Copper
Quincy Mine, Hancock, Houghton Co., Michigan, United States
7.0x 5.6x 2.4 cm
UPM04A Copper
Point Prospect, Keweenaw Co., Michigan, USA
13.0x 8.8x 5.9 cm
UPM05 Copper
Caledonia Mine, Ontonagon Co., Michigan, United States
8.2x 7.4x 3.5 cm
UPM06 Copper in Calcite
Quincy Mine, Hancock, Houghton Co., Michigan, United States
5.1x 4.7x 3.0 cm
$585
UPM07 Copper
White Pine Mine, White Pine, Ontonagon Co., Michigan, USAt
15.1x 13.1x 1.9 cm
UPM07A Copper
Champion Mine, Painesdale, Houghton Co., Michigan, USA
6.1x 3.0x 2.0 cm
UPM08 Copper in Quartz
Ontonagon Co., Upper Peninsula, Michigan, United States
9.0x 7.0x 5.2 cm
$625
UPM08A Copper (Spinel Twin!)
Northwestern Mine, Keeweenaw Co., Michigan, USA
5.3x 3.2x 2.0 cm
UPM09 Copper
Point Prospect, Keweenaw Co., Michigan, USA
7.2x 4.6x 1.8 cm
UPM10 Copper
Point Prospect, Keweenaw Co., Michigan, USA
12.0x 6.2x 3.1 cm
UPM10A Copper
Point Prospect, Keweenaw Co., Michigan, USA
5.1x 3.1x 2.8 cm
UPM11A Copper
Point Prospect, Keweenaw Co., Michigan, USA
5.4x 2.5x 0.9 cm
UPM12 Quartz, Malachite, Chrysocolla
Globe-Miami Mining District, Gila County, Arizona, USA
8.4x 3.2x 4.6 cm
UPM13 Quartz and Chrysocolla
Arizona, United States
8.3x 6.6x 1.3 cm
UPM14 Chamosite ps. Almandine Garnet
Michigamme Mine, Marquette Iron Range, Iron Co., Michigan, United States
7.2x 5.0x 2.6 cm
$165
UPM15 Chamosite ps. Almandine Garnet
Michigamme Mine, Marquette Iron Range, Iron Co., Michigan, United States
3.4x 3.1x 3.0 cm
$125
UPM16 Chamosite ps. Almandine Garnet
Michigamme Mine, Marquette Iron Range, Iron Co., Michigan, United States
4.0x 2.8x 2.5 cm
$80
UPM16A Copper
Point Prospect, Keweenaw Co., Michigan, USA
5.1x 4.0x 1.9 cm
UPM17 Anilite
Champion Mine, Painesdale, Houghton Co., Michigan, USA
7.5x 3.7x 2.2 cm
$80