Babingtonite
Chemical Formula	Ca2(Fe,Mn)FeSi5O14(OH)
Species	Silicates
Crystal System	Triclinic
Mohs Scale	5-6
Specific Gravity	3.3
Color	Dark green to black
Luster	Vitreous
Refractive Index	n = 1.700 n = 1.710 n = 1.725
Diaphaneity	Opaque
Cleavage	PerfectPerfect on Good on and
Fracture	Irregular/Uneven
Crystal Habit：Prismatic crystals
Geological Setting：Veins cutting granitic pegmatites and diorites, cavities and vugs in mafic volcanic rocks and gneisses, skarns.