Description
Naturally shaped unpolished pyrolusite specimen. Pieces vary in shape and size, shown with a quarter to illustrate size. Approximately 3 x 4 x 3 cm (1.2 x 1.6 x 1.2″)
Pyrolusite is a mineral consisting essentially of manganese dioxide. It is a black, amorphous appearing mineral, often with a granular, fibrous or columnar structure. Pyrolusite is an essential ingredient in steel and other alloys, it is also used as a colouring material. It is often called the stone of confidence and transformation.
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