Grandidierite
Grandidierite
Grandidierite

Grandidierite

€18,00
SKU: A794
Behara, Amboasary Sud District, Anosy, Madagascar
In this grandidierite only one crystal face is visible, the rest are covered with matrix.
2.8 x 2.0 x 1.8 cm
7.6 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.