mineral
Likely milky quartz fragment
Quartz (SiO₂)
AI-generated identification · may be incorrectSmall, rough, opaque-to-translucent white fragment with brown staining; quartz has Mohs hardness 7, vitreous luster, and no cleavage, breaking with uneven or conchoidal surfaces. The image is too limited for confident identification; it could also be another pale mineral or rock fragment.
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Physical properties
Small, rough, opaque-to-translucent white fragment with brown staining; quartz has Mohs hardness 7, vitreous luster, and no cleavage, breaking with uneven or conchoidal surfaces. The image is too limited for confident identification; it could also be another pale mineral or rock fragment.
Formation & geological history
Quartz commonly crystallizes from silica-rich fluids in veins and also occurs in igneous and metamorphic rocks. Its age and specific formation environment cannot be determined from the photograph.
Uses & applications
Quartz is used in glassmaking, electronics, abrasives, and decorative stone; attractive pieces may be collected or made into jewelry.
Geological facts
Quartz is one of Earth’s most abundant minerals and occurs in many colors and crystal forms.
Field identification & locations
Look for hardness sufficient to scratch glass, lack of cleavage, and a glassy fracture; brown patches may be iron-oxide staining. Quartz is widespread worldwide.
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Epidote
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Granite
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