mineral
White quartz-rich rock, possibly milky quartz
Quartz (SiO₂), likely massive milky quartz; identification is uncertain from the image
AI-generated identification · may be incorrectPale white to translucent with a vitreous luster and irregular fracture; quartz has Mohs hardness 7, a trigonal crystal structure, and no cleavage. The dark patches may be inclusions or surface staining.
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Physical properties
Pale white to translucent with a vitreous luster and irregular fracture; quartz has Mohs hardness 7, a trigonal crystal structure, and no cleavage. The dark patches may be inclusions or surface staining.
Formation & geological history
Quartz commonly crystallizes from silica-rich fluids in veins and cavities, or occurs in igneous and metamorphic rocks. Its age and specific formation setting cannot be determined from the photograph.
Uses & applications
Quartz is used in glassmaking, electronics, abrasives, and as a decorative or collectible mineral; attractive pieces may be cut or polished.
Geological facts
Milky appearance typically results from microscopic fluid or gas inclusions that scatter light.
Field identification & locations
Look for hardness sufficient to scratch glass and absence of cleavage; a closer view or hardness test would help distinguish quartz from other pale rocks. Quartz occurs worldwide in veins and many rock types.
