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Quartz
Quartz is a major-rock forming tectosilicate. Quartz is the second-largest mineral in occurrence. The mineral is composed of two silicon - and oxygen tetrahedra to create a chemical formula of SiO2.
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Properties
Mineral Class
Silicates
7
Trigonal
Luster
Vitreous (Varies when in Massive form)
Chemical Formula
SiO2
Streak
Colorless*
Uses & Applications
One of the most commonly used minerals on Earth, Quartz has a variety of applications:
Glass Production
Industrial Applications
Electrical Uses
Collection & Scientific Value
Associated Minerals
Quartz is associated with many minerals, especially with other silicates.
Notable Localities
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Varieties
Amethyst
A common item of many gift shops, Amethyst is one of the most common varieties of Quartz. The purple hues of the Amethyst are caused by natural Iron irradiation. After heating, Amethyst changes into a yellow color, making it a popular base of Citrine.
Citrine
Rose Quartz
Smoky Quartz
Additional Resources
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Properties
Uses & Applications
Associated Minerals
Notable Localities
Varieties
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