Grandidierite
Grandidierite
Grandidierite

Grandidierite

€39,00
SKU: A791
Behara, Amboasary Sud District, Anosy, Madagascar
This grandidierite shows the paragenesis typical for the locality and contains a few small and a larger phlogopite schist platelet.
4.5 x 3.3 x 2.7 cm
37.5 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.