Case 12

Datolite

Flintsteel Mine, Ontonagon County, Michigan

Beautiful deep color in this stone. In perfect condition, front & back.

3.7 x 3.0 x 1.2cm

SOLD

TM21-1375

Copper Skull

Centennial #6 Mine, Houghton County, Michigan

Great example of this unique form of copper.

10.3 x 7.7 x 6.0cm

SOLD

TM75-714

Datolite

Empire (Iron City) Mine, Keweenaw County, Michigan

Very nice peach color with unusual inclusions.

3.2 x 4.7 x 1.3cm

$70

SOLD

Analcite, Calcite, Quartz, & Copper

Phoenix Mine, Keweenaw County, Michigan

Very fine cabinet specimen, attributed to the Phoenix Mine by George Robinson, curator of the Seaman Mineral Museum. Some crystals have copper inclusions. Comes with Museum label DM 2559.

10.8 x 5.9 x 5.0cm

SOLD

TM75-715

Copper Crystals

Baltic Mine, Houghton County, Michigan

Excellent crystallization on this branching small cabinet specimen. Very few Baltic Mine crystallized coppers are found in the mineral marketplace.

9.4 x 4.5 x 4.2cm

SOLD

TM19-1031

Keweenaw Agates

Keweenaw County, Michigan

Fine group of face-polished agates from different beaches in the Keweenaw.

• Left-Tube Agate, 5.1 x 4.0cm face
• Center-Spider Web Agate, 5.2 x 2.8cm face
• Right-Banded Agate, 4.6 x 5.3cm face

$95/3

SOLD

Datolite

Lake Superior Copper District, Michigan

Very fine datolite with yellow & pink coloring. Flecks of native copper are also present. Ex. Seaman Mineral Museum ETB 11 with labels.

4.3 x 3.5 x 2.7cm

SOLD

TM21-1377