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Case 2

Datolite

Franklin Mine, Houghton County, Michigan Unusual & very attractive color in this specimen. Ex. Don Kelman Collection. 3.2 x 2.9 x 1.3cm $40 TM21-1338

Quartz w/Calcite

Osceola Mine, Silverton, San Juan County, Colorado Choice Colorado specimen. Very fine group of Quartz crystals with a coating of Calcite that Fluoresces red under SW. Pyrite and Barite crystals are also present. 9.2 x 8.3 x 3.3cm $95 TM54-1613

Crystalline Copper

National Mine, Rockland, Michigan Excellent small cabinet specimen from the National Mine just outside of Rockland. Ex. Seaman Museum #DM15873 with old Michigan College of Mining and Technology label and display tray. 9.5 x 5.3 x 1.3cm SOLD TM19-1003

Rhodochrosite

Capillitas Mine, Catamarca, Argentina Two gorgeous slabs of this beautiful material. Large slab is polished on both sides. Either or both would make beautiful jewelry. Large slab face 6.6 x 10.6cm Small slab face 2.9 x 7.7cm SOLD TM54-1614

Fluorite

Denton Mine, Hardin County, Illinois Excellent miniature of purple zoning over yellow Fluorite. Chalcopyrite crystals are also present. 5.5 x 5.3 x 4.9cm $85 TM54-1615

Quartz

Phoenix Mine, Keweenaw County, Michigan Very fine small cabinet specimen of quartz crystals sitting on a Prehnite matrix. Ex. Seaman Museum #LLH507. Comes with musuem label. 7.7 x 4.3 x 1.8cm SOLD TM75-674

Keweenaw Agates

Keweenaw County, Michigan Nice group of three medium-size Agates from out on Keweenaw Point. SOLD TM75-675

Datolite

St. Clair Mine, Keweenaw County, Michigan Nice example from an uncommon locality. Ex. Seaman Museum #LLH848, comes with museum display label. 4.5 x 2.9 x 1.9cm SOLD TM21-1339

Lake Superior Agate

Grand Marais, Michigan Large whole Agate from the Eastern U>P> with a real unique look. Weighs 11.5 oz. 7.5 x 6.5 x 5.3cm SOLD TM54-1617

Datolite

Centennial Mine, Houghton County, Michigan The much desired blue and green Datolite. Very hard to come by except out of old collections. Ex. Don Kelman Collection. 4.5 x 3.0 x 2.4cm SOLD TM21-1340
Click on any picture to zoom in for closer detail.
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© 2025 Tamarack Mineral Company. All Rights Reserved. Website by North Country Website Design.

Case 2

Datolite

Franklin Mine, Houghton County, Michigan Unusual & very attractive color in this specimen. Ex. Don Kelman Collection. 3.2 x 2.9 x 1.3cm $40 TM21-1338

Quartz w/Calcite

Osceola Mine, Silverton, San Juan County, Colorado Choice Colorado specimen. Very fine group of Quartz crystals with a coating of Calcite that Fluoresces red under SW. Pyrite and Barite crystals are also present. 9.2 x 8.3 x 3.3cm $95 TM54-1613

Crystalline Copper

National Mine, Rockland, Michigan Excellent small cabinet specimen from the National Mine just outside of Rockland. Ex. Seaman Museum #DM15873 with old Michigan College of Mining and Technology label and display tray. 9.5 x 5.3 x 1.3cm SOLD TM19-1003

Rhodochrosite

Capillitas Mine, Catamarca, Argentina Two gorgeous slabs of this beautiful material. Large slab is polished on both sides. Either or both would make beautiful jewelry. Large slab face 6.6 x 10.6cm Small slab face 2.9 x 7.7cm SOLD TM54-1614

Fluorite

Denton Mine, Hardin County, Illinois Excellent miniature of purple zoning over yellow Fluorite. Chalcopyrite crystals are also present. 5.5 x 5.3 x 4.9cm $85 TM54-1615

Quartz

Phoenix Mine, Keweenaw County, Michigan Very fine small cabinet specimen of quartz crystals sitting on a Prehnite matrix. Ex. Seaman Museum #LLH507. Comes with musuem label. 7.7 x 4.3 x 1.8cm SOLD TM75-674

Keweenaw Agates

Keweenaw County, Michigan Nice group of three medium-size Agates from out on Keweenaw Point. SOLD TM75-675

Datolite

St. Clair Mine, Keweenaw County, Michigan Nice example from an uncommon locality. Ex. Seaman Museum #LLH848, comes with museum display label. 4.5 x 2.9 x 1.9cm SOLD TM21-1339

Lake Superior

Agate

Grand Marais, Michigan Large whole Agate from the Eastern U>P> with a real unique look. Weighs 11.5 oz. 7.5 x 6.5 x 5.3cm SOLD TM54-1617

Datolite

Centennial Mine, Houghton County, Michigan The much desired blue and green Datolite. Very hard to come by except out of old collections. Ex. Don Kelman Collection. 4.5 x 3.0 x 2.4cm SOLD TM21-1340
Click on any picture to zoom in for closer detail.
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