Red Beryl from Wah Wah Mountains, Utah


M & W Minerals

Walter R. Kellogg


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Mineral Specimen #5407    Marcasite Pseudomorph/Cast

Joplin Field, Tri-State District, Jasper Co., Missouri

3.7 x 3.2 x 2.1 cm
1.5 x 1.3 x 0.8 in


Ex. A. Neely, 1960s

A thin mass of underjoined Marcasite crystals which had formed over a now absent crystal of an unknown crystal resulting in a concave shape. The terminations of the crystals have a notched " Cockscomb " habit. The color is golden with a touch of green and the luster is submetallic to metallic. The layer of crystals is thin enough that there are several small gaps and light can be seen through the specimen. The absent, underlying crystal was likely Galena. It is common to see specimens of Marcasite covering Galena crystals from the Tri State district but this is the only time I have ever seen the Marcasite without the underlying Galena. The specimen was actually glued onto an old piece of styrofoam with the concave portion facing downward. It took some delicate work to remove all of the glue.

Condition: Very Good

Flaws: Nothing Appreciable

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