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  2. Quartz - Wikipedia

    en.wikipedia.org/wiki/Quartz

    Quartz is, therefore, classified structurally as a framework silicate mineral and compositionally as an oxide mineral. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. [10] Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation ...

  3. Quartz Vs. Granite: Which Stone Is Right For Your ... - AOL

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

    The price will go up if you choose a manufacturer that also does their own installation. Natural Vs. ... “If you have an affinity for natural stone, then you won't want to go with quartz, as it ...

  4. Hexagonal crystal family - Wikipedia

    en.wikipedia.org/wiki/Hexagonal_crystal_family

    In particular, there are crystals that have trigonal symmetry but belong to the hexagonal lattice (such as α-quartz). The hexagonal crystal family consists of the 12 point groups such that at least one of their space groups has the hexagonal lattice as underlying lattice, and is the union of the hexagonal crystal system and the trigonal ...

  5. Silicon dioxide - Wikipedia

    en.wikipedia.org/wiki/Silicon_dioxide

    Alpha quartz is the most stable form of solid SiO 2 at room temperature. The high-temperature minerals, cristobalite and tridymite, have both lower densities and indices of refraction than quartz. The transformation from α-quartz to beta-quartz takes place abruptly at 573 °C.

  6. Caesarstone - Wikipedia

    en.wikipedia.org/wiki/Caesarstone

    Aerial view of Caesarstone factory near Caesarea's Roman amphitheater Caesarstone's production line Caesarstone's quality control. Caesarstone Ltd. manufactures quartz surfaces in three different sites, two in Israel – Kibbutz Sdot Yam and the Bar Lev Industrial Zone near Karmiel, and in its new plant in Richmond Hill, GA, USA, since May 27, 2015 and sources products from third party ...

  7. Cristobalite - Wikipedia

    en.wikipedia.org/wiki/Cristobalite

    Cristobalite (/ k r ɪ ˈ s t oʊ b ə ˌ l aɪ t /) is a mineral polymorph of silica that is formed at very high temperatures. It has the same chemical formula as quartz, Si O 2, but a distinct crystal structure.

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