• Hausmannite - Wikipedia

    en.wikipedia.org/wiki/Hausmannite Hausmannite is a complex oxide of manganese containing both di-and tri-valent manganese. The formula can be represented as Mn 2+ Mn 3+ 2 O 4.It belongs to the spinel group and forms tetragonal crystals. Hausmannite is a brown to black metallic mineral with Mohs hardness of 5.5 and a specific gravity of 4.8.. The type locality is Oehrenstock (Öhrenstock), Ilmenau, Thuringian Forest, Thuringia ...
  • Hausmannite | mineral | Britannica

    www.britannica.com/science/hausmannite Hausmannite, a manganese oxide mineral (Mn2+Mn3+2O4) that occurs as brownish black crystals or granular masses in high-temperature hydrothermal veins and in contact metamorphic zones. It is found associated with other oxide minerals of manganese and other metals at Ilmenau, Ger.; Långban, Swed.;
  • Hausmannite: Mineral information, data and localities.

    www.mindat.org/min-1832.html Hausmannite has a tetragonal distorted spinel structure (due to the Jahn-Teller distortion of the Mn 3+-centred polyhedron). When heated above 1473 K, a cubic high-temperature phase appears (Frenzel 1980). Hausmannite generally forms black granular aggregates or, relatively rare, pseudo-octahedral crystals.
  • Hausmannite Mineral Data

    webmineral.com/data/Hausmannite.shtml General Hausmannite Information : Chemical Formula: Mn++Mn+++2O4 : Composition: Molecular Weight = 228.81 gm Manganese 72.03 % Mn 103.50 % Mn 2 O 3: Oxygen 27.97 % O: 100.00 % 103.50 % = TOTAL OXIDE
  • Hausmannite | Definition of Hausmannite by Merriam-Webster

    www.merriam-webster.com/dictionary/hausmannite Hausmannite definition is - an opaque mineral Mn3O4 consisting of manganese tetroxide found commonly in brownish black tetragonal crystals.
  • Hausmannite - definition of hausmannite by The Free Dictionary

    www.thefreedictionary.com/hausmannite Define hausmannite. hausmannite synonyms, hausmannite pronunciation, hausmannite translation, English dictionary definition of hausmannite. Noun 1. hausmannite - a mineral consisting of manganese tetroxide; a source of manganese atomic number 25, manganese, Mn - a hard brittle grey polyvalent...
  • Hausmannite mineral information and data

    www.dakotamatrix.com/mineralpedia/5974/hausmannite Hausmannite occurs in hydrothermal veins and also forms from the metamorphism of manganese-rich rocks. Localities for Hausmannite include Germany, Sweden, Wales, England, the United States, Canada, Brazil, Australia, South Africa, and Namibia, and others including some of economic importance.
  • HAUSMANNITE - Raven Crystals

    www.ravencrystals.com/HAUSMANNITE_df_1148.html Hausmannite may be helpful to reduce anxiety, feelings of frustration, and release attachment. Hausmannite enhances and facilitates one’s spiritual evolution. Hausmannite facilitates a deeper state of meditation. Hausmannite is also known as a “stone of security.” Hausmannite is a stone that supports manifestation and attracting love.
  • HAUSMANNITE (Manganese Oxide) - Amethyst Galleries

    www.galleries.com/Hausmannite Ergo, hausmannite has a distorted spinel structure that produces a tetragonal symmetry and a basal cleavage not possible in the spinel group of minerals. At much higher temperatures, the structure of hausmannite converts to the isometric spinel structure. Hausmannite is an interesting, and can be (when well-formed) a first-rate mineral specimen.
  • Hausmannite | Etsy

    www.etsy.com/market/hausmannite Manganovesuvianite on Hausmannite 2.68 ct Cushion Cut 9.10 x 6.60 mm Y92776 Black Gray Gemstone Loose Gem Stone Faceted 1001RareGemstones From shop 1001RareGemstones