Kutnohorite
Chemical Formula	CaMn2+(CO3)2
Species	Carbonates
Crystal System	Trigonal
Mohs Scale	3-4
Specific Gravity	3.12
Color	White, pale pink or light brown
Streak	White to pale pink
Luster	Vitreous to dull
Refractive Index	n = 1.710 - 1.727 n = 1.519 - 1.535
Diaphaneity	Translucent
Cleavage	PerfectPerfect on
Fracture	Sub-Conchoidal
Crystal Habit：Aggregates of bundled bladed crystals
Geological Setting：Manganiferous sediments