Quartz

SiO2

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Quartz is the second most abundant mineral in Earth's continental crust, after feldspar. It occurs in virtually every geological environment and is a component of almost every rock type. Varieties include amethyst, citrine, rose quartz, smoky quartz, and chalcedony.

晶系 Trigonal
鉱物分類 09 Silicates
モース硬度 7.0
比重 2.65
色 Colorless, white, purple, pink, brown, black
光沢 Vitreous
条痕色 White
劈開 None
断口 Conchoidal
透明度 Transparent
結晶習性 Prismatic, massive, druzy

モース硬度

Mohs Hardness: 7.0 – 7.0
1 Soft10 Hard

晶系

Trigonal

Explore on Science FYI

ChemFYI
Silicon (Si) Primary element in SiO₂
ChemFYI
Oxygen (O) Part of SiO₂ formula
GemFYI
Amethyst Purple quartz variety
GemFYI
Citrine Yellow quartz variety
GemFYI
Rose Quartz Pink quartz variety

Frequently Asked Questions

What is the hardness of Quartz?
Quartz has a Mohs hardness of 7.0.
What crystal system does Quartz belong to?
Quartz crystallizes in the Trigonal crystal system.
What color is Quartz?
Quartz is typically Colorless, white, purple, pink, brown, black.
What type of luster does Quartz have?
Quartz exhibits a Vitreous luster.
What is the chemical formula of Quartz?
The chemical formula of Quartz is SiO2.