9

Raw crystallized pyrolusite

Weight 75 gr
CHARACTERISTICS
Weight 75 gr
Size 555x50x25 mm
Reference 220908362
Mineral mineral Pyrolusite
Category Crystals and geodes
Group Crystals on ganges
Country Country Morocco Morocco
Contractual photos showing the object you will receive when ordering. the photos were taken in order to obtain the most faithful possible rendering of the object.
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Formula MnO2] PYROLUSITE
Mn Manganese Transition metal 63.19%
O Oxygen Other no metal 36.81%
100%
Pyrolusite is a mineral composed primarily of manganese dioxide and is considered the most important manganese ore. Its crystal structure is tetragonal, and its crystals are usually acicular or fibrous in shape, although more massive shapes are also common. Pyrolusite varies in color from steel gray to jet black, with a metallic or submetallic luster. It has a hardness of 6 to 6.5 on the Mohs scale. Pyrolusite is often associated with other manganese minerals and typically forms in oxidizing environments of manganese deposits. In addition to its use as a manganese ore, pyrolusite also has applications in glass bleaching, dry cell manufacturing, and as a bleaching agent in ceramic production.

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