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.

결정계 Trigonal
광물 분류 09 Silicates
모스 경도 7.0
비중 2.65
색상 Colorless, white, purple, pink, brown, black
광택 Vitreous
조흔색 White
벽개 None
단구 Conchoidal
투명도 Transparent
결정 습성 Prismatic, massive, druzy

모스 경도

Mohs Hardness: 7.0 – 7.0
1 Soft10 Hard

결정계

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.