Large Botryoidal Prehnite Crystals w Copper - Iroquois Mine, Keweenaw, Michigan
RM 313.16
Mineral Specimens
8.7cm Nice Calcite Crystal Group - Adventure Copper Mine, Ontonagon, Michigan
RM 521.94
Nice Copper Crystal Group prospected from White Pine Mine, Ontonagon co Michigan
RM 521.94
Crystallized Copper On Prehnite - Iroquois Mine, Keweenaw, Michigan
RM 146.14
124g Cuprite Crystal Octagedron Group - Rubtovsk Mine, Altai Krai, Russia
RM 772.47
8.5cm Incredible Botryoidal Hematite Crystal Group - Montreal Mine, Wisconsin
RM 2,083.57
3cm Dark Purple Marcasite Crystals w Calcite on Dolomite - Felch Road Cut, MI
RM 146.14
2.3cm Interesting Botryoidal Copper Crystal Group - Arcadian Mine, Michigan
RM 187.90
Bright Green Prehnite Botryoidal Crystals - Iroquois Copper Mine, Keweenaw, Mich
RM 246.35
3.5cm Great Copper Crystals On Natural Basalt Base - Centennial #2 Mine Michigan
RM 1,457.25
12.5cm Big Copper Crystal w Green Prehnite - Iroquois Mine, Keweenaw, Michigan
RM 1,043.88
9cm Gorgeous Clear Quartz Crystal Group - Goose Lake, Marquette, Michigan
RM 1,878.98
5.4cm Gorgeous Pink Rose Quartz Crystals w Green Epidote - St Louis Mine, Mich
RM 271.41
4cm Quartz Crystal Group w Green Epidote & Basalt - Osceola Mine, Michigan
RM 50.11
3.3cm Copper Crystals On Green Chlorite Included Quartz Crystals- Quincy Mine MI
RM 313.16
5cm Quartz w Green Prehnite & Pink Feldspar - Osceola Mine, Michigan
RM 62.63
113g Dark Orange Scheelite Crystal Specimen - Sichun Provence, China
RM 313.16
12cm Elongated Copper Crystal Group - Dover Mine, Houghton Co, Michigan
RM 354.92
4cm Silver Crystal Group - Copper Falls Surface Deposit (Prehnite Pit) Michigan
RM 1,666.02
6.5cm Dense Copper Crystal Group w Adularia & Quartz - Indiana Mine, Michigan
RM 747.41
6.7cm Copper Crystal Group w Golden Domeykite Coating - White Pine Mine Michigan
RM 521.94
8cm Gorgeous Quartz Crystal Group on Specular Hematite - Republic Mine, Michigan
RM 1,043.88
Copper Cube Crystal On Copper - Quincy Mine, Michigan
RM 709.84
4cm Great Blocky Copper Crystal Group - Delaware Mine, Keweenaw, Michigan
RM 1,148.26
4cm Green Prehnite & Epidote w Quartz Crystals on Red Feldspar - Osceola Mine MI
RM 125.27
Clear Analcime Crystals On Matrix 6cm Specimen - Keweenaw Peninsula, Michigan
RM 622.15
15.5cm Huge Golden Pyrite Crystals w Limonite & Quartz - Hiawatha Mine, Michigan
RM 1,983.36
4.5cm Outstanding Copper Smelting Artifact Specimen - Calumet & Hecla Mining MI
RM 730.71