quartzito

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

via Wikipedia infobox

Wikidata facts

Subclass of: metamorphic rock
Material used: quartz
Image: Quartzite 2 jpg.jpg

Show 3 more facts

Commons category: Quartzite
Mohs' hardness: 7
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4

Sources (5)

via Wikidata · CC0

Article · Português

O quartzito é uma rocha metamórfica cujo componente principal é o quartzo (mais de 75% como ordem de grandeza). Outros constituintes são moscovita, biotita, sericita, turmalina, dumortierita. Um quartzito pode ter como, protólito arenitos quartzosos porém (origem mais comum), tufos e riolitos silicosos e chert silicoso. Bolsões (pods) ou veios de quartzo, normalmente os produtos de segregação metamórfica, são muitas vezes retrabalhados por cataclase e metamorfismo dando origem a quartzitos semelhantes aos de origem sedimentar.

Abstract from DBpedia / Wikipedia · CC BY-SA