Case 11

Copper Crystals

Northwestern #3 Mine, Keweenaw County, Michigan Superb example of cubic copper crystals. The large cube at one end is hoppered. See photo. 2.8 x 1.3 x 0.9cm SOLD TM19-940

Datolite

Flintsteel Mine, Ontonagon County, Michigan Great color with a white, lacy border. Perfect condition front and back. 5.0 x 3.7 x 1.9cm SOLD TM21-1241

Calcite/Epidote

Centennial Mine, Houghton County, Michigan Very fine miniature of epidote and quartz crystals sitting on a calcite matrix. 6.0 x 4.3 x 3.0cm $65 TM75-614

Datolite

Delaware Mine, Keweenaw County, Michigan Beautiful medium-size datolite with great color and complete backside. 8.0 x 7.0 x 2.2cm $275 TM21-1242

Copper Crystals

Lake Superior Copper District, Michigan Outstanding crystallization all around this fine miniature copper. Appears to come from a fissure mine, most likely the Phoenix. 3.8 x 5.5 x 3.7cm $125 TM19-941

Prehnite/Quartz

Franklin Mine, Houghton County, Michigan Excellent small cabinet combo of quartz crystals sitting on green prehnite. Tiny copper crystals are also present. Ex. Robert Nowakowski Collection #RN126. 8.2 x 6.5 x 1.9cm SOLD TM75-615

Datolite

Caledonia Mine, Ontonagon County Super large pair with deep color that we donated for the Seaman Museum Auction back in 1999. Recently bought the collection this pair had gone into. 6.7 x 5.6 x 2.6cm $275 pair TM21-1243