Grandidierite
Grandidierite
Grandidierite

Grandidierite

€36,00
SKU: A792
Behara, Amboasary Sud District, Anosy, Madagascar
A medium-sized grandidierite crystal with a few visible faces. The end faces are covered with matrix.
3.2 x 2.4 x 2.4 cm
16.7 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.