A
#1070
Arsenic Bearing Copper

Mohawk Mine, Mohawk, Keweenaw County, Michigan, USA
6.1 x 2.7 x 2.2 cm
$35
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#648
Lake Superior Agate

Brockway Mountain, Keweenaw County, Michigan, USA
9.8x4.2x7.2 x 10.1x4.1x6.2 x cm
$175
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#164
Anilite with Calcite, Malachite and Azurite

Roadcut near the Champion Mine near Painsdale, Houghton County, Michigan
Cu7S4
3.3 x 3 x 1.5 cm
$25
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C
#1285
Elongated Spinel Twin Copper Crystal

Keweenaw Peninsula, Michigan, USA
4.5 x 0.6 x 0.3 cm
$40 / Reserved
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#1280
Copper Crystals

Keweenaw Peninsula, Michigan, USA
4.6 x 1.2 x 0.7 cm
$25
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#1184
Copper Crystals

Central Mine, Central, Keweenaw County, Michigan, USA
16.4 x 7.7 x 1.4 cm
$175
|
#1170
Celestine

Maybee, Monroe County, Micigan
10.8 x 6.8 x 1.8 cm
$35
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#1150
Calcite with included Copper

Qunicy Mine, Quincy Hill, Houghton County, Michigan, USA
Ex. Jean Peterman Kemp
3.9 x 2.5 x 1.6 cm
$700
|
#1127
Copper included in Calcite

Lake Superior Copper District, Michigan
1930s
5.3 x 4.4 x 4.7 cm
SOLD
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#1093
Celestine

Holloway Quarry, Berlin Township, Monroe County, Michigan, USA
4.7 x 4.5 x 2.2 cm
$15
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#1092
Copper Crystals

Central Mine, Central, Keweenaw County, Michigan, USA
6.4 x 5.7 x 2.7 cm
$200
|
#1087
Chert Arrowhead

Near Lake City, Missaukee County, Michigan, USA
4.1 x 2.5 x 1 cm
$25
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#1073
Calcite with Included Copper

Ontonagon County, Michigan, USA
5 x 2.5 x 2 cm
$30
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#1072
Chamosite pseudomorph after Garnet

Michigamme Mine, Marquette County, Michigan, USA
7 x 5.5 x 5.3 cm
$40
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#838
Copper Crystals

Northwestern Mine, Central, Keweeenaw County, Michigan, USA
4.9 x 3.4 x 3.1 cm
$80
|
#834
Copper Crystals

Keweenaw Peninsula, Michigan, USA
12.2 x 10.5 x 5.2 cm
$100
|
#738
Copper Crystals with minor Silver

Central Mine, Keweenaw County, Michigan
15.5 x 9 x 4.8 cm
$250
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#717
Copper Crystals

Quincy Mine, Quincy Hill, Houghton County, Michigan, USA
9.3 x 5.5 x 4 cm
$85
|
#652
Copper Crystals

Knowlton Mine, Ontonagon County, Michigan, USA
12.2 x 6.4 x 3.6 cm
$100
|
#598
Copper Amygdules

Copper Falls Mine, Copper Falls, near Eagle Harbor, Keweenaw County, Michigan, USA
4.7 x 3.3 x 2.2 cm
$40
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#485
Iridescent Calcite with Selenite

Wallace Stone Quarry, Bayport, Huron County, Michigan
8.2 x 2.7 x 4.5 cm
$20
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#430
Copper with Chisel Marks

Lake Superior Copper District, Upper Peninsula, Michigan, USA
9.2 x 5.2 x 3.8 cm
$45
|
#376
Copper Crystals

Cliff Mine, Phoenix, Keweenaw County, Michigan, USA
4.1 x 4 x 1.4 cm
$250
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#298
Copper included in Calcite

Caledonia mine, Ontonagon County, Michigan
9.6 x 9.3 x 6.5 cm
$300
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#287
Copper included in Calcite

Quincy Mine, Quincy Hill, Houghton County, Michigan, USA
7.7 x 5 x 2.7 cm
$650
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#282
Copper Skull

Lake Superior Copper District, Michigan, USA
10.2 x 6.3 x 4.6 cm
$200
|
#163
Sheet Copper

Caledonia mine, Ontonagon County, Michigan
18 x 12.5 x 1 cmAppx. 1 mm thick
$50
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#162
Copper Crystals

Phoenix Mine, Keweenaw County, Michigan, USA
8.3 x 4.6 x 3.2 cm
$200
|
#161
Copper Wire Crystal on Prehnite with Copper inclusions in Prehnite

Osceola Mine, Osceola, Houghton County, Michigan, USA
3 x 2 x 1.1 cm
$35
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#153
Copper Crystals

Copper Falls Mine, Copper Falls, near Eagle Harbor, Keweenaw County, Michigan, USA
3.5 x 3 x 1 cm
$75
|
#70
Copper Crystals

Central Mine, Keweenaw County, Michigan, USA
13.5 x 8 x 1 cm
$175
|
#18
Copper Crystals

Lake Superior Copper District, Michigan, USA
16 x 5 x 3 cm
$250
|
#732
Seam Copper on Basalt

Osceola No. 5, Osceola Mine, Osceola, Houghton Co., Michigan, USA
10.3 x 7.3 x 4.1 cm
$20
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D
#1323
Datolite

Quincy Mine, Quincy Hill, Houghton County, Michigan, USA
5.2 x 4 x 3.7 cm
$50
|
#1089
Datolite

Qunicy Mine, Quincy Hill, Houghton County, Michigan, USA
4.2x3.6x1.1 x 4.0x3.7x1.1 x cm
$90
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#1085
Datolite in Basalt

Flint Steel Mine, Ontonagon County, Michigan, USA
6.2 x 3 x 1 cm
$45
|
#1081
Datolite

Flint Steel Mine, Ontonagon County, Michigan, USA
3.6 x 2.5 x 0.8 cm
$20
|
#1078
Datolite

Qunicy Mine, Quincy Hill, Houghton County, Michigan, USA
3.1 x 2.3 x 0.9 cm
$45
|
#1071
Datolite with Epidote

Flint Steel Mine, Ontonagon County, Michigan, USA
2.4 x 2.4 x 1.1 cm
$35
|
#1069
Datolite

Flint Steel Mine, Ontonagon County, Michigan, USA
4.1 x 3.3 x 1.2 cm
$40
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#1067
Domeykite

Ahmeek Mine, Ahmeek, Keweenaw County, Michigan, USA
Cu2As
6.3 x 5.3 x 2.7 cm250 g
$75
|
#1066
Datolite

Lakebed of Lake Superior near Copper Harbor, Keweenaw County, Michigan
7.4 x 2.7 x 0.5 cm
$30
|
#1065
Datolite and Prehnite

Copper Falls Mine, Copper Falls, near Eagle Harbor, Keweenaw County, Michigan, USA
6.2 x 5.5 x 2.9 cm
$25
|
#1064
Datolite Crytals

Houghton County, Michigan, USA
8.1 x 7.2 x 3.7 cm
$25
|
#1063
Datolite

Lake Mine, Mass City, Ontonagon County, Michigan, USA
5.2x4.0x1.6 x 4.4x4.2x1.3 x cm
$70
|
#902
Datolite

Delaware Mine, Keweenaw County, Michigan, USA
2.5 x 2.4 x 0.9 cm
$50
|
#851
Datolite

Centennial Mine, Houghton County, Michigan, USA
3.7 x 1.8 x 1.9 cm
$25
|
#850
Datolite in Basalt with Microcline

Flint Steel Mine, Ontonagon County, Michigan, USA
4.7 x 4.2 x 0.7 cm
$30
|
#847
Datolite with Copper, Epdiote and Microcline

Mass Mine, Mass City, Ontonagon County, Michigan, USA
5.7 x 3.8 x 1.2 cm
$35
|
#846
Datolite with included Copper

Caledonia Mine, Greenland, Ontonagon County, Michigan, USA
3.5 x 2.2 x 1.3 cm
$20
|
#844
Datolite

Quincy Mine, Quincy Hill, Houghton County, Michigan, USA
3.8 x 2.7 x 0.9 cm
$40
|
#839
Datolite

Lake Mine, Mass City, Ontonagon County, Michigan, USA
4.3 x 3.8 x 0.9 cm
$35
|
#832
Datolte

Lake Mine, Mass City, Ontonagon County, Michigan, USA
4.8 x 4.5 x 0.9 cm
$45
|
#638
Olive Datolite

Flint Steel Mine, Ontonagon County, Michigan, USA
6.4 x 5.3 x 3.5 cm
$45
|
#149
Datolite with included Copper

Quincy Mine, Quincy Hill, Houghton County, Michigan, USA
7.5 x 4.5 x 2 cm
$100
|
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F
#1325
Datolite

Quincy Mine, Quincy Hill, Houghton County, Michigan, USA
6.5 x 4.3 x 1.6 cm
$45
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G
#1161
Golden Goethtie

Marquette County, Michigan, USA
5 x 1.3 x 0.7 cm
$15
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#849
Gerhardtite

Caledonia Mine, Greenland, Ontonagon County, Michigan, USA
3.2 x 2.4 x 1.7 cm
$35
|
#845
Gerhardtite

Caledonia Mine, Greenland, Ontonagon County, Michigan, USA
3.5 x 2 x 1 cm
$30
|
#836
Gerhardtite

Caledonia Mine, Greenland, Ontonagon County, Michigan, USA
4.8 x 3.8 x 2.2 cm
$35
|
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H
#1091
Hematite

Dickinson County, Michigan, USA
6.5 x 4.8 x 3.7 cm
$100
|
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M
#1094
Mohawkite and Quartz Cabochon

Mohawk Mine, Keweenaw County, Michigan, USA
40 x 30 x 4 mm
$50
|
#1074
Mohawkite and Quartz

Mohawk #5 Shaft, Mohawk Mine, Mohawk, Michigan, USA
11 x 5 x 0.5 cm
$45
|
#56
Millerite

Wallace Stone Company Quarry, Pigeon, Huron County, Michigan
3 x 3 x 1.5 cm
$35
|
P
#1274
Pumpellyite-Mg, Copper, Calcite with included Copper, Quartz and Microcline in Amygdule Basalt

Keweenaw Couny, Michigan, USA
Type Location
Ca2MgAl2(Si2O7)(SiO4)(OH)2·H2O
9.4 x 8.7 x 4.7 cm
$40
|
#1076
Petoskey Stone (Hexagonaria percarinata)

Northern Lower Penninsula, Michigan, USA
State Stone of Michigan
5.4 x 5.3 x 2.7 cm
$15
|
#734
Prehnite and Microcline variety Adularia

Osceola No. 5, Osceola Mine, Osceola, Houghton Co., Michigan, USA
8.2 x 7.4 x 4.5 cm
$25
|
#463
Pyrolusite, Goethite and Druzy Quartz

Taylor Iron Mine, Alberta Township, Baraga County, Michigan
5.5 x 3.9 x 4.4 cm
$20
|
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R
S
#1090
Silver and Copper Halfbreed

Minesota Mine, Ontonagon County, Michigan. USA
5.8 x 2 x 1.5 cm
$100
|
#757
Silver

Copper Falls Mine, Copper Falls, near Eagle Harbor, Keweenaw County, Michigan, USA
2.2 x 1.2 x 0.6 cmappx. 4.5g
$30
|
#700
Silver

Evergreen Bluff Mine, Mass City, Ontonagon Co., Michigan, USA
2.9 x 2.6 x 1.6 cmAppx. 23 g
$85
|
#674
Silver Copper Halfbreed

Houghton County, Michigan, USA
8.7 x 8.6 x 1.3 cm170 g
$200
|
#503
Silver Crystals on Copper Crystal

Lake Superior Copper District, Michigan
5 x 3.8 x 2.8 cm
$475
|
#408
Etched Sulfur

Stoneco Quarry, Maybee, Monroe County, Michigan
3.6 x 3 x 2.2 cm
$45
|
#386
Sulfur and strontian-Calcite on Celestine

Stoneco Quarry, Maybee, Monroe County, Michigan
5.2 x 4.4 x 2.4 cm
$15 / Reserved
|
#373
Silver/Copper Hafbreed with Microcline and Epidote

Adventure mine, Butler Lode, Greenland, Ontonagon County, Michigan, USA
6 x 6 x 6.8 cm
$175
|
#367
Silver/Copper Halfbreed with Epidote

Calumet and Hecla Lode, Houghton County, Michigan, USA
9.3 x 6.4 x 4.8 cm
$150
|
#184
Septarian Nodule / Calcite in Chert

Beach of Lake Michigan, South Haven, Van Buren County, Michigan
12.5 x 8.7 x 0.1 cmTwo Slabs
$75
|
#92
Silver Crystals

White Pine Mine, White Pine, Ontonagon County, Michigan, USA
4 x 3 x 1 cm
$275
|
#91
Silver and Copper Halfbreed

Copper Falls Mine, Keweenaw County, Michigan, USA
6 x 5 x 3 cm
$175
|
#30
Selenite on Red Gypsum

Michigan Cold Storage, Wyoming, Kent Co., Michigan
4.5 x 3.5 x 2.5 cm
$25
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