منگانیت
Sign in to saveManganite 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.
Key facts
- Mineral.name
- Manganite
- Mineral.category
- Oxide mineral
- Mineral.image
- Manganite-180085.jpg
- Mineral.caption
- Manganite, Ilfeld, Thuringia, Germany (size: 5.2×4.1×2.7 cm)
- Mineral.formula
- MnO(OH)
- Mineral.IMAsymbol
- Mnn
- Mineral.strunz
- 4.FD.15
- Mineral.dana
- 06.01.03.01
- Mineral.system
- Monoclinic
- Mineral.class
- Prismatic (2/m) (same H-M symbol)
- Mineral.symmetry
- P21/c
- Mineral.unit cell
- a = 5.3 Å, b = 5.278 Å, c = 5.307 Å; β = 114.36°; Z = 4
- Mineral.color
- Dark steel-gray to black, reddish brown in transmitted light, gray-white with brownish tint, with blood-red internal reflections in reflected light
- Mineral.habit
- Slender prismatic crystals, massive to fibrous, pseudo-orthorhombic
- Mineral.diaphaneity
- Opaque, transparent on thin edges
- Mineral.gravity
- 4.29–4.34
- Mineral.opticalprop
- Biaxial (+)
- Mineral.refractive
- nα = 2.250(2) nβ = 2.250(2) nγ = 2.530(2)
via Wikipedia infobox
Wikidata facts
- Named after
- manganese
- Mass
- 103.9442
- Image
- Manganit - Ilfeld, Harz2.jpg
Show 8 more facts
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 4.FD.15
- Commons category
- Manganite
- Nickel-Strunz 9th edition (updated 2009)
- 4.FD.15
- Mohs' hardness
- 4
- crystal system
- monoclinic crystal system
- IMA Mineral Symbol
- Mnn
- chemical formula
- Mn³⁺O(OH)
- Strunz 8th edition (series ID, updated)
- IV/F.04a – Anhang
Sources (2)
via Wikidata · CC0