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Case 9

Copper in Calcite

Quincy Mine, Houghton County, Michigan Excellent thumbnail with lots of visible copper inside the calcite, plus native copper emerging from the calcite. 3.0 x 2.9 x 2.8cm SOLD TM75-580

Datolite

Drexel Mine, Keweenaw County, Michigan Nice zoning & unusual color in this pair from Drexel. 4.8 x 4.4 x 1.8cm SOLD TM21-1179

Copper Crystals

Phoenix Mine, Keweenaw County, Michigan Excellent stalk of copper crystals protruding from a base of prehnite. 7.0 x 4.0 x 1.7cm $75 TM19-904

Datolite

Nassau Mine, Ontonagon County, Michigan Choice datolite from this small mine in Ontonagon county. Translucent with a pinkish hue and in perfect condition. 4.3 x 3.5 x 1.3cm SOLD TM21-1180

Copper Crystals

Baltic Mine, Houghton County, Michigan Outstanding large crystals on this copper etched out of calcite. One of the best we have had from the Baltic. 6.3 x 5.7 x 2.6cm SOLD TM19-905

Datolite

Isle Royale National Park, Keweenaw County, Michigan Beautiful, good size pair from this locality, with excellent color not usually seen from here. In perfect condition! 6.8 x 5.7 x 2.6cm SOLD TM21-1181

Quartz

Centennial Mine, Houghton County, Michigan Showy cabinet size specimen with quartz, epidote, & calcite crystals set off by oxidized copper. Some of the quartz xls have copper inclusions. This piece has been in our collection for 15+ years. 13.0 x 9.3 x 6.4cm SOLD TM75-581
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© 2021 Tamarack Mineral Company. All Rights Reserved. Website by North Country Website Design.

Case 9

Copper in Calcite

Quincy Mine, Houghton County, Michigan Excellent thumbnail with lots of visible copper inside the calcite, plus native copper emerging from the calcite. 3.0 x 2.9 x 2.8cm SOLD TM75-580

Datolite

Drexel Mine, Keweenaw County, Michigan Nice zoning & unusual color in this pair from Drexel. 4.8 x 4.4 x 1.8cm SOLD TM21-1179

Copper Crystals

Phoenix Mine, Keweenaw County, Michigan Excellent stalk of copper crystals protruding from a base of prehnite. 7.0 x 4.0 x 1.7cm $75 TM19-904

Datolite

Nassau Mine, Ontonagon County, Michigan Choice datolite from this small mine in Ontonagon county. Translucent with a pinkish hue and in perfect condition. 4.3 x 3.5 x 1.3cm SOLD TM21-1180

Copper Crystals

Baltic Mine, Houghton County, Michigan Outstanding large crystals on this copper etched out of calcite. One of the best we have had from the Baltic. 6.3 x 5.7 x 2.6cm SOLD TM19-905

Datolite

Isle Royale National Park, Keweenaw County, Michigan Beautiful, good size pair from this locality, with excellent color not usually seen from here. In perfect condition! 6.8 x 5.7 x 2.6cm SOLD TM21-1181

Quartz

Centennial Mine, Houghton County, Michigan Showy cabinet size specimen with quartz, epidote, & calcite crystals set off by oxidized copper. Some of the quartz xls have copper inclusions. This piece has been in our collection for 15+ years. 13.0 x 9.3 x 6.4cm SOLD TM75-581
Click on any picture to zoom in for closer detail.
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