Blackstone Mine, Shullsburg, Upper Mississippi Valley Dist., Lafayette Co., Wisconsin

14.7 x 7.9 x 4.4 cm
5.8 x 3.1 x 1.7 in

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circa 1965

A mass of well formed Marcasite crystals with a high metallic luster. The color is a brassy/silvery color with a slight hint of green. There appears to be no Marcasite disease present wih no sulfuric smell although there is a ring of iron oxide staining on the bottom of the matrix.

Condition: Fairly Good

Flaws: There are a dozen or so incomplete crystals with no terminations along one edge of the specimen.

This mineral is also found in the following galleries: Minerals From the United States | Sulfides and Sulfosalts | Minerals Priced Between 50 and 99 Dollars