metamorphic
Pink Quartzite
Quartzite (SiO2)
Hardness of 7 on the Mohs scale, pink to reddish-orange color due to iron oxide impurities, vitreous to greasy luster, non-foliated massive crystal structure, conchoidal fracture with no true cleavage, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, pink to reddish-orange color due to iron oxide impurities, vitreous to greasy luster, non-foliated massive crystal structure, conchoidal fracture with no true cleavage, specific gravity of 2.65.
Formation & geological history
Formed through the metamorphism of quartz-rich sandstone under high heat and tectonic pressure, typically during mountain-building events over millions of years.
Uses & applications
Used in construction, decorative landscaping, road aggregate, and sometimes in sculpture or lapidary arts.
Geological facts
Quartzite is extremely durable and resistant to chemical weathering, which is why quartz-rich sandstones transform into virtually indestructible ridges and hills over geological time.
Field identification & locations
Can be identified in the field by its hardness (scratches glass easily), sugary texture on fractured surfaces, and lack of reaction to acid. Commonly found in mountainous regions worldwide.
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