mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 (Mohs), Color: White to pink/reddish due to iron oxide impurities, Luster: Vitreous to greasy, Crystal Structure: Hexagonal/Trigonal, Cleavage: None (conchoidal fracture), Specific Gravity: 2.65
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Physical properties
Hardness: 7 (Mohs), Color: White to pink/reddish due to iron oxide impurities, Luster: Vitreous to greasy, Crystal Structure: Hexagonal/Trigonal, Cleavage: None (conchoidal fracture), Specific Gravity: 2.65
Formation & geological history
Forms in a wide variety of environments, most commonly from the cooling of magma or hydrothermal veins. This specimen likely weathered from a larger vein and became water-worn or tumbled.
Uses & applications
Quartz is used in glassmaking, electronics (piezoelectric properties), abrasives, and as a gemstone or collector specimen.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. Iron-stained quartz is often mistaken for rose quartz, but the color is often patchy or surface-level rather than consistent throughout the crystal lattice.
Field identification & locations
Identify by its hardness (it will easily scratch glass) and lack of cleavage. Look for it in riverbeds, gravel pits, and mountain trails. It is ubiquitous worldwide.
