mineral
Milky quartz (rough fragment)
Quartz, silicon dioxide (SiO₂)
AI-generated identification · may be incorrectPale, translucent to cloudy white with a glassy luster and irregular fracture; Mohs hardness 7, no cleavage, and hexagonal crystal structure. The small, rough fragment’s exact properties are difficult to assess from the photo.
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Physical properties
Pale, translucent to cloudy white with a glassy luster and irregular fracture; Mohs hardness 7, no cleavage, and hexagonal crystal structure. The small, rough fragment’s exact properties are difficult to assess from the photo.
Formation & geological history
Quartz commonly forms as silica-rich fluids cool in veins and fractures, and also occurs in many igneous and metamorphic rocks. Its age cannot be determined from appearance alone.
Uses & applications
Used as a silica source in glass and other industries; attractive pieces are collected or used in simple jewelry and crafts.
Geological facts
Quartz is one of Earth’s most abundant minerals and resists scratching by ordinary steel.
Field identification & locations
Look for a glassy appearance, lack of cleavage, and the ability to scratch glass; a streak or scratch test can help distinguish it from softer lookalikes. Quartz is plausible in the region near 15.4°S, 28.4°E, but the photo alone cannot confirm the locality or species.
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