IMA mineral species

Grandidierite

(Mg,Fe²⁺)(Al,Fe³⁺)₃(SiO₄)(BO₃)O₂

Nesosilicate mineral.

GreenTeal

Grandidierite specimen
Grandidierite-169886.jpg · Wikimedia Commons (see file page for author & license)

Properties

🔷 Orthorhombic✏️ streak white
Chemical formula(Mg,Fe²⁺)(Al,Fe³⁺)₃(SiO₄)(BO₃)O₂
ElementsMg, Fe, Al, Si, O, B
Crystal systemOrthorhombic
Mohs hardness—
Density—
Streakwhite
Color—
IMA symbolGdd
Nickel–Strunz class9.AJ.05

“—” means no reliable value in Wikidata yet. Check Mindat for full data.