Quartzite

Scientific Name: Quartzite

Category: rock

Quartzite

Brief Description

A hard, non-foliated metamorphic rock which was originally pure quartz sandstone.

Characteristics

Extremely hard, grainy, sandpaper-like surface that becomes glassy with high-grade metamorphism. Usually white to gray, but often pink or red due to iron oxide impurities.

Habitat

Commonly found in mountain ranges and areas with ancient metamorphic rock formations.

When to Find It

N/A

Conservation Status

N/A

Ecological Role

Due to its hardness and resistance to erosion, quartzite often forms the ridges and peaks of mountain ranges, providing high-altitude habitats for specialized flora and fauna.

Easily Confused With

Sandstone (softer, grains rub off easily) and Marble (will react/fizz with acid, whereas quartzite will not).

Observation Tips

Look for its characteristic sparkling or sugary appearance when held under a light, which is caused by the interlocking quartz crystals reflecting light.

Interesting Facts

Quartzite is so hard that it can scratch glass and steel. It was used by prehistoric humans to make stone tools when flint or chert was unavailable.