کوارتزیت

Also known as recrystallized sandstone

thumb|Quartzite can have a grainy, glassy, sandpaper-like surface

AI overview

Quartzite is a hard, non-foliated metamorphic rock that forms when sandstone is subjected to heat and pressure deep within the Earth. It's valued for construction and industrial uses because of its durability and resistance to weathering, and it often has a distinctive grainy or glassy surface texture.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Rock.name: Quartzite
Rock.type: Metamorphic
Rock.caption: Quartzite, containing darker bands of phengite and chlorite, from Maurienne Valley in the French Alps
Rock.composition: Quartz
Rock.image: Quartzite Sollières.jpg
Rock.protolith: Quartz Sandstone
Rock.fabric: Non-foliated