mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 on Mohs scale. Color: Transparent to brownish-orange (due to iron oxide staining). Luster: Vitreous (glassy). Crystal Structure: Hexagonal/Trigonal. Cleavage: Indistinct/Conchoidal fracture. Specific Gravity: 2.65.
- Hardness
- 7 on Mohs scale
- Color
- Transparent to brownish-orange (due to iron oxide staining)
- Luster
- Vitreous (glassy)
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Physical properties
Hardness: 7 on Mohs scale. Color: Transparent to brownish-orange (due to iron oxide staining). Luster: Vitreous (glassy). Crystal Structure: Hexagonal/Trigonal. Cleavage: Indistinct/Conchoidal fracture. Specific Gravity: 2.65.
Formation & geological history
Formed from silica-rich hydrothermal fluids cooling in veins or cavities within various rock types. The orange-brown crust is a result of secondary iron oxide (limonite or hematite) coating.
Uses & applications
Used in glass making, electronics (piezoelectric properties), abrasives, and as decorative collector specimens.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. This specific specimen shows 'druzy' or crystalline growth that has been stained by groundwater weathering.
Field identification & locations
Identify by its ability to scratch glass and its lack of cleavage (it breaks like glass). It is commonly found in gravel pits, mountain ranges, and near volcanic activity. Collectors look for well-defined crystal points.
