Braunite

id: braunite-257-8528440
title: Braunite
text: Braunite is a silicate mineral containing both di- and tri-valent manganese with the chemical formula: Mn2+Mn3+6[O8|SiO4]. Common impurities include iron, calcium, boron, barium, titanium, aluminium, and magnesium. Braunite forms grey/black tetragonal crystals and has a Mohs hardness of 6 – 6.5. It was named after the Wilhelm von Braun (1790–1872) of Gotha, Thuringia, Germany. A calcium iron bearing variant, named braunite II (formula: Ca(Mn3+,Fe3+)14SiO24), was discovered and described in 1967
brand slug: wiki
category slug: encyclopedia
description: Nesosilicate mineral of manganese
original url: https://en.wikipedia.org/wiki/Braunite
date created:
date modified: 2024-01-10T21:48:10Z
main entity: {"identifier":"Q413391","url":"https://www.wikidata.org/entity/Q413391"}
image: {"content_url":"https://upload.wikimedia.org/wikipedia/commons/f/f8/Braunit_-_San_Marcel%2C_Piemont.jpg","width":2600,"height":2000}
fields total: 13
integrity: 15

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