Showcase  13
May 8, 2019

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  Datolite

Caledonia mine
Ontonagon County
Michigan

Excellent "zoned" datolite with the darker ring filled with native copper. Old piece, collected  in 1957.
3.9 x 3.3 x 1.4cm

TM 21-1091


SOLD
     
     
     
     
     
     
     
     
     
     
     
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  Copper crystals

Northwestern mine #3
Keweenaw County
Michigan

Fine miniature of cuprite-coated copper crystals that displays great, both front and back.
4.0 x 3.5 x 1.6cm

TM 19-847


$45.00
     
     
     
     
     
     
     
     
     
     
     
  TM 19-847
     
     
     
     
     
     
     
     
     
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  Prehnite

Centennial #3 mine
Houghton County
Michigan

A great find by a local collector. #3 was a conglomerate mine not known for minerals. He was following a bulldozer cut through the rock pile and notice that it cut through a zone of basalt that was full of mineralization. He carefully examined the basalt and recovered some very fine prehnites.
6.2 x 4.0 x 1.8cm

TM 75-527


SOLD
     
     
     
     
     
     
     
     
     
     
     
     
  TM 75-527
     
     
     
     
     
     
     
     
     
     
     
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  Datolite

Delaware mine
Keweenaw County
Michigan

Beautiful stone with great color that you just can't find anymore since the pile's been crushed.
4.0 x 2.7 x 1.4cm

TM 21-1092


SOLD
     
     
     
     
     
     
     
     
     
     
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  Copper crystals

Cliff mine
Keweenaw County
Michigan

Gorgeous miniature of well-crystallized copper from the famous Cliff fissure mine.
4.5 x 2.0 x 1.5cm

TM 19-848


$55.00
     
     
     
     
     
     
     
     
     
     
     
     
  TM 19-848
     
     
     
     
     
     
     
     
     
     
     
     
     
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  Calcite crystals

White Pine mine
Ontonagon County
Michigan

Excellent group of calcites that are filled with cuprite and hematite inclusions. A couple of crystals are bruised, not detracting from overall aesthetics.
5.3 x 4.3 x 3.0cm

TM 75-528


SOLD
     
     
     
     
     
     
     
     
     
     
     
  TM 75-528
     
     
     
     
     
     
     
     
     
     
     
     
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