Olivine

(Mg,Fe)2SiO4

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Olivine is a group of silicate minerals common in Earth's mantle and in mafic and ultramafic igneous rocks. The gem variety is called peridot. Olivine is one of the first minerals to crystallize from a cooling basaltic magma.

晶系 Orthorhombic
鉱物分類 09 Silicates
モース硬度 6.5-7.0
比重 3.22-4.39
色 Green, yellow-green, olive green
光沢 Vitreous
条痕色 Colorless
劈開 Poor
断口 Conchoidal
透明度 Transparent
結晶習性 Granular, prismatic

モース硬度

Mohs Hardness: 6.5 – 7.0
1 Soft10 Hard

晶系

Orthorhombic

Explore on Science FYI

ChemFYI
Magnesium (Mg) Forsterite end-member (Mg₂SiO₄)
ChemFYI
Iron (Fe) Fayalite end-member (Fe₂SiO₄)
ChemFYI
Silicon (Si) Nesosilicate framework
GemFYI
Peridot Gem-quality forsterite olivine

Frequently Asked Questions

What is the hardness of Olivine?
Olivine has a Mohs hardness of 6.5-7.0.
What crystal system does Olivine belong to?
Olivine crystallizes in the Orthorhombic crystal system.
What color is Olivine?
Olivine is typically Green, yellow-green, olive green.
What type of luster does Olivine have?
Olivine exhibits a Vitreous luster.
What is the chemical formula of Olivine?
The chemical formula of Olivine is (Mg,Fe)2SiO4.