Forsterite
Forsterite is a silicate mineral recognized for its hardness and durability, with notable Chinese occurrences.
About Forsterite
Forsterite belongs to the silicate class in the olivine group and has the chemical formula Mg2SiO4. It crystallizes in the orthorhombic system and ranks among the harder species, with lasting durability.
Identification & care
Specimens usually show tabular, prismatic, massive (dunite, peridotite). Its color range is broad, including colorless, pale yellow, pale green, and gem variety = peridot. The luster is vitreous, the streak is white, and specimens range from transparent to translucent. The cleavage is imperfect {010} and {100}. The fracture is conchoidal, which aids identification.
Collector context
Collector notes
For collectors, Forsterite is a benchmark crystalline species. Documented Chinese occurrences are recorded at Jiama Cu-polymetallic deposit, among others.