mineral

Quartz crystal-bearing rock

Quartz (SiO₂), likely a milky/clear quartz vein specimen

AI-generated identification · may be incorrect

Hardness 7; mostly colorless to milky gray, with vitreous luster and irregular fracture rather than cleavage. The apparent crystals are coarse and translucent, but the image is insufficient to confirm crystal habit or associated minerals.

Identified September 6, 2026More mineral →

Explore Quartz crystal-bearing rock in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Likely formed when silica-rich hydrothermal fluids deposited quartz in a fracture or vein; age depends on its host geology and cannot be determined visually. Common in igneous, metamorphic, and sedimentary terrains.

Uses & applications

Used for glass, engineered stone, abrasives, electronics, and ornamental specimens; attractive transparent crystals may have modest collecting or lapidary value.

Geological facts

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

Field identification & locations

Identify by glassy luster, lack of cleavage, hardness sufficient to scratch ordinary glass, and conchoidal fracture; common worldwide, especially in hydrothermal veins and pegmatites. The dark material may be host rock or iron staining.