mineral

Small rough quartz crystal or quartz fragment

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

Translucent gray-white with a vitreous to dull luster; quartz has Mohs hardness 7, a trigonal crystal structure, and no cleavage, breaking with irregular or conchoidal surfaces. The image is too small to confirm crystal form or identify inclusions.

Identified October 8, 2026More mineral →

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Physical properties

Formation & geological history

Quartz commonly crystallizes from silica-rich fluids in veins and cavities or forms during igneous and metamorphic processes. Its age and exact formation environment cannot be determined from the photograph.

Uses & applications

Quartz is used in glassmaking, electronics, construction aggregate, and jewelry; this rough fragment appears mainly suitable for a small collection.

Geological facts

Quartz is one of Earth’s most abundant minerals and occurs in many colors and crystal habits.

Field identification & locations

Look for glassy translucence, hardness sufficient to scratch ordinary glass, and lack of cleavage; common sources include quartz veins and pegmatites worldwide. The specimen’s exact identity is uncertain from the image alone.