mineral
Milky quartz
Quartz (silicon dioxide, SiO₂)
AI-generated identification · may be incorrectWhite, opaque to translucent piece with a vitreous-to-waxy luster; hardness 7 Mohs, trigonal crystal structure, and no cleavage, breaking with curved or irregular surfaces. The image alone does not show enough detail to assess specific gravity or confirm the identification.
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Physical properties
White, opaque to translucent piece with a vitreous-to-waxy luster; hardness 7 Mohs, trigonal crystal structure, and no cleavage, breaking with curved or irregular surfaces. The image alone does not show enough detail to assess specific gravity or confirm the identification.
Formation & geological history
Quartz commonly crystallizes from silica-rich fluids in veins and cavities, and also forms in igneous and metamorphic rocks. Quartz is geologically widespread and occurs in rocks of many ages.
Uses & applications
Quartz is used in glass and electronics; attractive pieces are collected or used in decorative objects and jewelry.
Geological facts
Milky appearance results from microscopic fluid or gas inclusions that scatter light.
Field identification & locations
The small white specimen appears consistent with milky quartz, but identification from this photo is uncertain. Check for hardness near 7 and a glassy, conchoidal fracture; it is common worldwide.
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