Clades:
Borates.
Chemical: Mg2FeBO5; magnesium-iron borate.
MineralogyLudwigite 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
Vonsenite.