Case 11

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

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

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

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

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 SOLD

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