Radiating crystals of thin, elongated crystals of Pyrolusite with a high metallic luster. The crystals are on a matrix composed of bands of iron oxides and cherty quartz. In places, there are druze Quartz crystals on the Chert. Some of the massive, black material in the matrix may be Manganite.
Flaws: None of the Pyrolusite crystals are terminated.
This mineral is also found in the following galleries: Minerals From Michigan | Oxides and Hydroxides | Quartz | Minerals Priced Between 25 and 49 Dollars