Grandidierite
Grandidierite
Grandidierite

Grandidierite

€8,00
SKU: A798
Behara, Amboasary Sud District, Anosy, Madagascar
A small, elongated partial crystal of grandidierite with a few slightly shiny crystal faces.
1.9 x 0.6 x 0.3 cm
0.33 g

Grandidierite is a rare orthorhombic crystallizing nesosilicate, consisting of both SiO4 and BO3 elements (a borosilicate). This greenish-blue mineral is relatively hard (Mohs = 7.5), mostly opaque, and rarely translucent or transparent. A higher iron content results in a greener color of the grandidierite. End-faced crystals are rare.