metamorphic
Quartz Vein Quartzite
Metamorphic Quartzite with Quartz Veining
AI-generated identification · may be incorrectHardness 7 on Mohs scale, grayish-brown color with a white quartz vein, vitreous to dull luster, massive crystal structure, specific gravity around 2.65.
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Physical properties
Hardness 7 on Mohs scale, grayish-brown color with a white quartz vein, vitreous to dull luster, massive crystal structure, specific gravity around 2.65.
Formation & geological history
Formed through the regional metamorphism of quartz-rich sandstone under high heat and pressure, often featuring later hydrothermal quartz infill.
Uses & applications
Used in landscaping, aggregate, and occasionally as a decorative stone or lapidary material.
Geological facts
The prominent white vein indicates secondary hydrothermal fluid movement through fractures that subsequently healed with crystalline silica.
Field identification & locations
Identify in the field by its extreme hardness which scratches glass and lack of effervescence with acid; commonly found in mountainous or metamorphosed terranes.
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