ludwigite

Ludwigite is a magnesium-iron borate mineral: Mg2FeBO5.

Key facts

Mineral.name: Ludwigite
Mineral.category: Borate mineral
Mineral.image: Ludwigite-242641.jpg
Mineral.imagesize: 260px
Mineral.caption: Radial aggregates of lustrous, black, metallic, acicular ludwigite crystals to 0.5 cm, from Alta Stock, Salt Lake County, Utah, USA.
Mineral.formula: Mg2Fe3+BO5
Mineral.IMAsymbol: Ldw
Mineral.molweight: 195.26 g/mol
Mineral.strunz: 6.AB.30
Mineral.system: Orthorhombic
Mineral.class: Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m)
Mineral.symmetry: Pbam
Mineral.unit cell: a = 9.26, b = 12.26 c = 3.05 [Å]; Z = 
Mineral.color: Pitch-black, olive-black
Mineral.habit: Massive – fibrous commonly in fanlike to felted aggregates
Mineral.cleavage: [001] Perfect
Mineral.fracture: Brittle – Conchoidal – Very brittle fracture producing small, conchoidal fragments.
Mineral.mohs: 5.5

via Wikipedia infobox

Wikidata facts

Image: Ludwigite - Brosso, Piemonte, Italia.JPG

Show 6 more facts

IMA Mineral Symbol: Ldw
chemical formula: Mg₂Fe³⁺O₂(BO₃)
Strunz 8th edition (series ID, updated): Vc/A.03
Commons category: Ludwigite
Nickel-Strunz 9th edition (updated 2009): 6.AB.30
Nickel-Strunz '10th ed', review of (9th ed/ 2009 update): 6.AB.30

Sources (1)

wikidata.org

via Wikidata · CC0

~1 min read

Article

1 sections

Contents

References

Ludwigite is a magnesium-iron borate mineral: Mg2FeBO5.

Ludwigite typically occurs in magnesian iron skarn and other high temperature contact metamorphic deposits. It occurs in association with magnetite, forsterite, clinohumite and the borates vonsenite and szaibelyite. It forms a solid solution series with the iron(II)-iron(III) borate mineral vonsenite.