mineral

Likely milky quartz

Quartz (SiO₂)

AI-generated identification · may be incorrect

A rough, translucent white-to-gray lump with a vitreous-to-dull surface; likely Mohs hardness 7, hexagonal crystal structure, no true cleavage, and specific gravity about 2.65. The image does not show diagnostic crystal faces, so identification is provisional.

Identified October 7, 2026More mineral →

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Physical properties

Formation & geological history

Quartz commonly crystallizes from silica-rich fluids in veins and cavities, or occurs in igneous and metamorphic rocks; it spans a vast range of geological ages. The reported central Mexico location is compatible with quartz-bearing volcanic and hydrothermal terrain.

Uses & applications

Commonly used as a silica source in glass and industrial materials; attractive pieces are collected or used decoratively and in jewelry.

Geological facts

Quartz is one of Earth’s most abundant minerals. A scratch test against glass (quartz should scratch it) and lack of cleavage can help distinguish it from softer white minerals.

Field identification & locations

Look for glassy fracture surfaces, hardness near 7, and irregular rather than flat cleavage breaks. Regional occurrence is plausible, but the photo alone cannot rule out another pale, translucent mineral.