mineral
Milky quartz
Quartz, silicon dioxide (SiO₂)
AI-generated identification · may be incorrectHardness 7 Mohs; white to translucent, vitreous luster, with a trigonal crystal structure. The specimen appears massive and irregular, with no obvious cleavage and uneven fracture.
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Physical properties
Hardness 7 Mohs; white to translucent, vitreous luster, with a trigonal crystal structure. The specimen appears massive and irregular, with no obvious cleavage and uneven fracture.
Formation & geological history
Forms when silica-rich fluids crystallize in veins and fractures, or during igneous and metamorphic processes. Quartz is found in rocks of many ages; this loose piece’s age and precise origin cannot be determined from the image.
Uses & applications
Used in glassmaking, electronics, construction aggregate, and ornamental objects; attractive pieces are collected or used in jewelry.
Geological facts
Milky color results from tiny fluid or gas inclusions that scatter light.
Field identification & locations
Look for its glassy shine, lack of cleavage, and ability to scratch ordinary glass; it is widespread in many geological settings. The image alone cannot confirm the identification definitively.
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Epidote
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Unidentified pink-and-gray mineral or rock specimen
Undetermined; the image is too blurry for reliable identification
mineral