mineral
Milky quartz fragment
Quartz (silicon dioxide, SiO₂)
AI-generated identification · may be incorrectWhite to translucent, glassy-to-dull luster, with irregular fracture and no obvious cleavage; Mohs hardness 7, trigonal crystal structure, specific gravity about 2.65. The small, rough fragment is consistent with quartz, though the image alone cannot confirm the identification.
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Physical properties
White to translucent, glassy-to-dull luster, with irregular fracture and no obvious cleavage; Mohs hardness 7, trigonal crystal structure, specific gravity about 2.65. The small, rough fragment is consistent with quartz, though the image alone cannot confirm the identification.
Formation & geological history
Quartz forms in many settings, including cooling silica-rich magma and mineral-filled fractures in rocks; the specimen’s age and exact origin cannot be determined from the image.
Uses & applications
Quartz is used in glassmaking, electronics, construction aggregate, and decorative objects; attractive pieces may be collected or used in jewelry.
Geological facts
Milky appearance results from microscopic fluid or gas inclusions that scatter light.
Field identification & locations
Look for its hardness (it scratches glass), lack of cleavage, and irregular fracture. Quartz is widespread in many rock types and occurs globally.
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