metamorphic
Pink Quartzite
Quartzite (primarily SiO2)
Hardness: 7 on Mohs scale; Color: Pinkish-tan to peach; Luster: Vitreous to dull; Crystal structure: Trigonal (microcrystalline); Cleavage: None (conchoidal fracture); Specific gravity: 2.6-2.7
- Hardness
- 7 on Mohs scale
- Color
- Pinkish-tan to peach
- Luster
- Vitreous to dull
Identified More metamorphic →
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Physical properties
Hardness: 7 on Mohs scale; Color: Pinkish-tan to peach; Luster: Vitreous to dull; Crystal structure: Trigonal (microcrystalline); Cleavage: None (conchoidal fracture); Specific gravity: 2.6-2.7
Formation & geological history
Formed through the metamorphism of quartz-rich sandstone under intense heat and pressure, typically during mountain-building events (orogeny). The pink hue suggests trace amounts of iron oxide.
Uses & applications
Used as building stone, decorative landscaping, road ballast, and occasionally in jewelry as tumbled stones.
Geological facts
Quartzite is so hard and chemically resistant that it often forms the ridges and peaks of mountain ranges because it weathers much more slowly than surrounding rocks.
Field identification & locations
Identify by its ability to scratch glass and its granular, sugary texture that resembles sandstone but does not rub off in individual grains. Commonly found in ancient mountain belts worldwide.
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