mineral

Quartz crystal with associated mica or feldspar

Quartz (SiO₂), with possible muscovite mica and feldspar inclusions

AI-generated identification · may be incorrect

The specimen appears to be a translucent, colorless-to-cloudy quartz crystal with attached brownish mineral flakes. Quartz has Mohs hardness 7, a vitreous luster, hexagonal crystal structure, no cleavage, and conchoidal fracture; the attached minerals cannot be identified reliably from the image.

Identified September 24, 2026More mineral →

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Physical properties

Formation & geological history

Quartz forms when silica-rich fluids crystallize in veins, cavities, or pegmatites, often alongside mica and feldspar. Its age cannot be determined from the photograph and depends on the host deposit.

Uses & applications

Quartz is used in glass, electronics, and decorative objects; attractive crystals are collected and sometimes used in jewelry.

Geological facts

Quartz is one of Earth’s most abundant minerals and commonly forms six-sided prisms, though the pictured crystal faces are not clearly defined.

Field identification & locations

Look for glassy translucence, hardness sufficient to scratch glass, and absence of cleavage; the specimen may be a quartz cluster on matrix. Quartz occurs worldwide in veins, pegmatites, and geodes.