Glaucochroite

Glaucochroite
Glaucochroite found in New Jersey
General
CategorySilicate mineral
Formula
(repeating unit)
CaMnSiO4
Strunz classification9.AC.05
Dana classification51.3.2.3
Crystal systemOrthorhombic
Identification
ColorBluish-gray, pink, brown, or white
FractureConchoidal, sub-conchoidal
Mohs scale hardness6
LusterVitreous, sub-vitreous, resinous
Streakwhite
Optical propertiesBiaxial (−)
References[1]

Glaucochroite is a calcium manganese nesosilicate mineral with formula CaMnSiO4. It occurs in metamorphosed limestones.

It was first described in 1899 in Franklin Furnace, Sussex County, New Jersey.