mineral

Quartz-rich breccia or vein quartz

Quartz (silicon dioxide, SiO₂), likely with iron-oxide staining and other pale gangue minerals

AI-generated identification · may be incorrect

White to translucent, glassy-to-waxy luster, irregular interlocking fragments, and no obvious cleavage; quartz hardness is Mohs 7 and specific gravity about 2.65. The image is blurred, so exact texture and inclusions are uncertain.

Identified September 6, 2026More mineral →

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Physical properties

Formation & geological history

Probably formed when silica-rich hydrothermal fluids filled fractures, possibly brecciating and cementing older rock; iron staining can produce cream, tan, or rusty tones. Age depends on the host deposit and cannot be determined visually.

Uses & applications

Common quartz has low individual value but is used in glass, ceramics, abrasives, electronics, and engineered stone; attractive pieces may be collected or used decoratively.

Geological facts

Quartz is one of Earth’s most abundant minerals and commonly forms veins, geodes, and crystals. The specimen may also contain calcite or feldspar, which would require hardness or acid testing to distinguish.

Field identification & locations

Look for glassy surfaces, conchoidal fracture, and scratching of window glass; quartz should not be scratched by a steel knife. Common occurrences include hydrothermal veins, pegmatites, and mineralized breccias worldwide.