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Mineralati

Minerals

Pyrolusite

pyrolusite

MnO2

Natural Specimen Pyrolusite Nodule Mineral Consisting Stock Photo ...

Natural Specimen Pyrolusite Nodule Mineral Consisting Stock Photo ... — via www.shutterstock.com · Source

Overview

Pyrolusite is a mineral consisting essentially of manganese dioxide (MnO2) and is important as an ore of manganese. It is a black, amorphous appearing mineral, often with a granular, fibrous, or columnar structure, sometimes forming reniform crusts. It has a metallic luster, a black or bluish-black streak, and readily soils the fingers. The specific gravity is about 4.8. Its name is from the Greek for fire and to wash, in reference to its use as a way to remove tints from glass.

Scientific references

  1. Pyrolusite — Wikidata. https://www.wikidata.org/wiki/Q413293 Link
  2. Pyrolusite — Wikipedia. https://en.wikipedia.org/wiki/Pyrolusite Link