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Quartzite – Formation, Composition, Properties, and Uses

Quartzite (from German Quarzit) forms when quartz sandstones are metamorphosed. The term quartzite also implies its high quartz content. Most quartzites contain 90% quartz by volume, but the percentage can go up to 99% in the case of the purest quartzite forms. Quartzite looks similar to its parent rock but it is much harder than …

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Metamorphic Rocks: Formation, Types and Examples

Metamorphic rocks are the rocks formed from other rocks. They are sedimentary or igneous rocks that have undergone changes as a result of extreme pressure and heat. The name defines their formation whereby ‘meta’ means change and ‘morph’ means ‘form.’ Hence, metamorphic rocks are those whose forms have been changed through a geological process such …

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What is a Rock and What are 3 Basic Types of Rocks

Rocks ordinarily lie everywhere on the ground of the Earth. They constitute most of the landforms, as we often notice. For instance, rocks make up the mountains and most of the non-water portions of the earth’s surface. A rock is hence defined as a solid naturally occurring mass of consolidated mineral matter. This is because …

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