mineral

Small transparent crystal fragment, possibly quartz

Quartz (SiO₂), tentative identification

AI-generated identification · may be incorrect

Colorless to smoky gray, transparent, with a glassy luster and apparent conchoidal fracture; quartz has Mohs hardness 7, no cleavage, hexagonal crystal structure, and specific gravity about 2.65. The image is too low-resolution for confident identification and could also show glass or another translucent mineral.

Identified August 22, 2026More mineral →

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Physical properties

Formation & geological history

If quartz, it formed from silica-rich hydrothermal fluids or in igneous and metamorphic rocks; quartz is common from Precambrian to modern geological settings. Its irregular shape suggests a broken crystal or tumbled fragment.

Uses & applications

Quartz is used in glass, ceramics, electronics, abrasives, and construction aggregate; clear crystals may be collected or cut as gemstones.

Geological facts

Quartz is one of Earth’s most abundant minerals and is piezoelectric, producing an electrical charge under pressure.

Field identification & locations

Look for hardness sufficient to scratch ordinary glass, lack of cleavage, and six-sided crystal faces; confirm with a loupe and scratch test. Common worldwide, especially in Brazil, Madagascar, the Alps, and U.S. hydrothermal districts.