mineral
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) in matrix
Hardness of 7 on the Mohs scale, white to milky color for the quartz portion with a vitreous to greasy luster, conchoidal fracture, and no cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, white to milky color for the quartz portion with a vitreous to greasy luster, conchoidal fracture, and no cleavage.
Formation & geological history
Formed through hydrothermal processes where silica-rich fluids crystallized within fractures or faults in older host rocks.
Uses & applications
Used primarily as decorative landscape stone, mineral specimen collecting, and occasionally for industrial silica applications.
Geological facts
Quartz veins are the most common source of hydrothermal mineral deposits, often hosting precious metals like gold.
Field identification & locations
Easily identified by the stark contrast between the hard white quartz and the darker host rock matrix; commonly found in mountainous regions and areas with ancient tectonic activity.
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