Case 9
Calcite Crystal
Mass Mine, Ontonagon County, Michigan
Excellent thumbnail in pristine condition. Water clear with minor Adularia attached.
2.6 x 1.8 x 1.5cm
SOLD
TM75-709
Datolite
Caledonia Mine, Ontonagon County, Michigan
Nice medium-sized stone with cool zoning. The outer zone is darker because it is full of copper flecks.
5.0 x 3.0 x 2.3cm
$75
TM21-1367
Copper Crystals
Cliff Mine, Keweenaw County, Michigan
Outstanding copper made up of hoppered cubes. Unusual from the Cliff Mine.
4.0 x 2.5 x 1.0cm
SOLD
TM19-1025
Silver/Copper
Minnesota Mine, Rockland, Michigan
Fine miniature with a couple of silver crystals sitting on a copper crystal on a basalt matrix.
4.5 x 3.0 x 1.1cm
$60
SOLD
Datolite
Bumblebee Mine, Ontonagon County, Michigan
Very fine datolite from this small mine outside of Rockland. Perfect condition, front and back.
4.5 x 3.2 x 3.6cm
$55
TM21-1368
Copper Crystals
Keweenaw County, Michigan
Most likely from the Central Mine as I have had others with the rare “hair formation” from there. None were cabinet size specimens like this, however.
9.8 x 5.5 x 3.5cm
SOLD
TM19-1026
Copper Skull
Centennial #3 Mine, Houghton County, Michigan
Very fine small cabinet specimen of this form of copper. Outer edges have been ground and polished. Mined in 1975.
6.2 x 5.0 x 4.0cm
SOLD
TM75-710
