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