Case 12

Datolite

Adventure Mine Ontonagon County Michigan Nice example of datolite specimen made up of many nodules that formed a larger stone. Not many datolites around from the Adventure. 4.4 x 3.1 x 1.1cm TM 21-1093 SOLD

Quartz, Epidote, Adularia

Adventure Mine Ontonagon County Michigan Fine example of multi- mineral combinations on this small cabinet specimen. A layer of adularia crystals has epidote and quartz crystals sitting on top. Collected 1985. 8.3 x 4.0 x 2.9cm TM 75-529 SOLD

Datolite

Delaware Mine Keweenaw County Michigan Very unusual specimen with two different colors of datolite present. There are several nodules of pink datolite mixed in with a deep mauve datolite. 5.5 x 3.7 x 1.8cm TM 21-1094 SOLD

Copper Crystals

Central Mine Keweenaw County Michigan Outstanding crystallization on all sides of this small cabinet specimen. 7.5 x 4.6 x 2.3cm TM 19-849 SOLD

Quartz, Epidote, Copper

Quincy Mine Houghton County Michigan A fabulous specimen from "Old Reliable" that has hundreds of sparkling quartz crystals covering both sides of a basalt matrix, along with epidote crystals and native copper. Most of the quartz crystals have bright native copper inclusions and several also encase epidote crystals. A real gem from the Copper District. 7.5 x 5.5 x 2.6cm TM 75-530 SOLD

Datolite

Superior mine Ontonagon County Michigan Beautiful white lacey border surrounds a translucent gray-to-mauve datolite from a small mine in Ontonagon County. 3.7 x 3.7 x 1.4cm TM 21-1095 SOLD