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  2. Granite - Wikipedia

    en.wikipedia.org/wiki/Granite

    Granite. Granite (/ ˈɡrænɪt / GRAN-it) is a coarse-grained (phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies underground.

  3. Felsic - Wikipedia

    en.wikipedia.org/wiki/Felsic

    Felsic magmas and lavas have lower temperatures of melting and solidification than mafic magmas and lavas. Felsic rocks are usually light in color and have specific gravities less than 3. The most common felsic rock is granite. Common felsic minerals include quartz, muscovite, orthoclase, and the sodium-rich plagioclase feldspars (albite-rich).

  4. Quartz - Wikipedia

    en.wikipedia.org/wiki/Quartz

    Quartz is a defining constituent of granite and other felsic igneous rocks. It is very common in sedimentary rocks such as sandstone and shale . It is a common constituent of schist , gneiss , quartzite and other metamorphic rocks . [ 22 ]

  5. Felsite - Wikipedia

    en.wikipedia.org/wiki/Felsite

    The mass of the rock consists of a fine-grained matrix of felsic materials, particularly quartz, sodium and potassium feldspar, [2] and may be termed a quartz felsite or quartz porphyry if the quartz phenocrysts are present. This rock is typically of extrusive origin, formed by compaction of fine volcanic ash, and may be found in association ...

  6. List of rock types - Wikipedia

    en.wikipedia.org/wiki/List_of_rock_types

    Monzogranite – Biotite granite rocks that are considered to be the final fractionation product of magma – A silica-undersaturated granite with <5% normative quartz; Monzonite – Igneous intrusive rock with low quartz and equal plagioclase and alkali feldspar – a plutonic rock with <5% normative quartz

  7. Quartz Vs. Granite: Which Stone Is Right For Your Countertops?

    www.aol.com/quartz-vs-granite-stone-countertops...

    Quartz countertops are composed of crushed quartz crystals, resins, and more pigments. An increasingly popular choice for kitchens, quartz countertops are designed to be durable and resistant to ...

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