Strunz classification 6.AB.30 Space group Pbam | Formula(repeating unit) Mg2FeBO5 Crystal system Orthorhombic | |
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Crystal class Dipyramidal (mmm)H-M symbol: (2/m 2/m 2/m) | ||
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 forma a solid solution series with the iron(II)-iron(III) borate mineral vonsenite.
It was first described in 1874 for an occurrence in Ocna de Fier, Banat Mountains, Caras-Severin, Romania and named for Ernst Ludwig (1842–1915), an Austrian chemist at the University of Vienna.
References
Ludwigite Wikipedia(Text) CC BY-SA