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Mineralati

Minerals

Manganite

manganite

Mn³⁺O(OH)

Manganite | Mineral Properties, Occurrence and Uses

Manganite | Mineral Properties, Occurrence and Uses — via geologyscience.com · Source

Overview

Manganite is a mineral composed of manganese oxide-hydroxide, MnO(OH), crystallizing in the monoclinic system (pseudo-orthorhombic). Crystals of manganite are prismatic and deeply striated parallel to their length; they are often grouped together in bundles. The color is dark steel-grey to iron-black, and the luster brilliant and submetallic. The streak is dark reddish brown. The hardness is 4, and the specific gravity is 4.3. There is a perfect cleavage parallel to the brachypinacoid, and less-perfect cleavage parallel to the prism faces. Twinned crystals are not infrequent. The mineral contains 89.7% manganese sesquioxide; it dissolves in hydrochloric acid with evolution of chlorine.

Identification characteristics

  • Mohs hardness 4

Scientific references

  1. Manganite — Wikidata. https://www.wikidata.org/wiki/Q401047 Link
  2. Manganite — Wikipedia. https://en.wikipedia.org/wiki/Manganite Link