Pink Quartzite

Physical Properties

Hardness: 7 on Mohs scale; Color: Pink, reddish-pink, or light peach; Luster: Vitreous to waxy when polished; Crystal structure: Trigonal/Hexagonal (granular); Cleavage: None; Specific Gravity: 2.63–2.65

Formation & Geological History

Formed when quartz-rich sandstone undergoes intense heat and pressure (metamorphism), causing quartz grains to recrystallize and fuse together. The pink hue is typically derived from trace amounts of iron oxide (hematite).

Uses & Applications

Used primarily as a decorative building stone, in road construction as ballast, and for lapidary work including polished 'pocket stones' or tumbled garden accents.

Geological Facts

Quartzite is so tough that it often breaks through the quartz grains rather than around them. It is one of the most durable and weather-resistant rocks on Earth, often forming the peaks of resistant mountain ridges.

Field Identification & Locations

Identify in the field by its hardness (it will easily scratch glass) and its sugary, granular texture beneath a smooth surface. Look for it in metamorphic belts or as rounded river cobbles in areas with glacial deposits.

Identified on: 5/2/2026

Mode: Standard