Dims: 0.9 x 0.7 x 0.4" (4.8 x 4.3 x 2.5 cm)
Wt: 9.2 g w/ acrylic base
White Pine Mine, Ontonogan County, Michigan, U.S.A.
Most of this small thumbnail specimen appears to consist of branching, arborescent Native Copper, but this material actually shows impressive crystal form when viewed under magnification, and even has crystalline tendencies to the naked eye. The formations are made up mostly of many tiny, intergrown cubes that show a rather dulled copper-red color and equally dull metallic luster. There is no apparent damage to the piece. One projection in particular is noticeable. This projection extends from the base of the piece upwards and parallel to the main formation. It consists of many intergrown Copper cubes that appear to be stacked on one another- all are directionally aligned, and the cubes increase in size from the bottom to the top of the formation. A small amount of colorless, crystalline calcite is intergrown near the base of the specimen, but there is no host rock present. It is hot-glued to a flat acrylic base which is affixed inside a plastic specimen box with a removable putty.