Case 11

Datolite

Quincy Mine, Houghton County, Michigan Beautiful deep yellow translucent Datolite. 6.3 x 3.5 x 1.0cm SOLD TM21-1301

Silver Crystals

Lake Superior Copper District, Michigan Superb thumbnail of sharp, well-defined Silver crystals. My pics don't do this specimen justice. 2.3 x 2.0 x 1.0cm SOLD TM45-250

Datolite

Superior Mine, Ontonagon County, Michigan Large translucent green Datolite with red veining running inside the Datolite. Large and unique from this location. 7.5 x 4.8 x 5.5cm SOLD TM21-1302

Calcites/Analcimes

Northwestern Mine, Keweenaw County, Michigan Several Calcite crystals sitting on white Analcime crystals with Adularia and native Copper also present. Self collected 40 years ago. 3.6 x 2.2 x 2.3cm SOLD TM75-644

Datolite

Caledonia Mine, Ontonagon County, Michigan Gorgeous pair with the darker areas being caused by a heavy copper concentration. 5.2 x 2.8 x 1.6cm SOLD TM21-1303

Copper

Crystals

Central Mine, Keweenaw County, Michigan Awesome crystallization on this excellent cabinet specimen. The specimen is all crystals with no matrix. A very good Copper! 9.0 x 7.4 x 3.5cm SOLD TM19-976