برونیت
Sign in to saveBraunite 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.
Key facts
- Mineral.name
- Braunite
- Mineral.image
- Braunit - San Marcel, Piemont.jpg
- Mineral.imagesize
- 260px
- Mineral.caption
- Braunite, from San Marcel, Piemonte, Italy
- Mineral.category
- Nesosilicates
- Mineral.formula
- Mn2+Mn3+6[O8
- Mineral.IMAsymbol
- Bnt
- Mineral.strunz
- 9.AG.05
- Mineral.dana
- 7.5.1.3
- Mineral.system
- Tetragonal
- Mineral.class
- Ditetragonal dipyramidal (4/mmm) H-M symbol: (4/m 2/m 2/m)
- Mineral.symmetry
- I41/acd
- Mineral.color
- brownish black, steel-grey
- Mineral.cleavage
- {112} perfect
- Mineral.mohs
- 6–
- Mineral.luster
- sub-metallic
- Mineral.streak
- black
- Mineral.diaphaneity
- opaque
via Wikipedia infobox
Wikidata facts
- Image
- Braunite-195641.jpg
Show 9 more facts
- IMA Mineral Symbol
- Bnt
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.AG.05
- Commons category
- Braunite
- Nickel-Strunz 9th edition (updated 2009)
- 9.AG.05
- type locality (geology)
- Friedrichroda
- streak color
- black
- crystal system
- tetragonal crystal system
- chemical formula
- Mn²⁺Mn³⁺₆(Si₈O₄)
- Strunz 8th edition (series ID, updated)
- VIII/A’.05
Sources (1)
via Wikidata · CC0