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Shocked quartz is a form of quartz that has a microscopic structure that is different from normal quartz. Under intense pressure (but limited temperature), the crystalline structure of quartz is deformed along planes inside the crystal.
The harder stones, such as granite, granodiorite, syenite, and basalt, cannot be cut with copper tools alone; instead, they were worked with time-consuming methods like pounding with dolerite, drilling, and sawing with the aid of an abrasive, such as quartz sand. This occurred in a process known as sand abrasion.
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 ...
Stacked rock features have been noted to have religious significance to the Klamath and Modoc Tribes of indigenous people of the Western United States, the respective tribes prohibiting photography of or touching the stone formations. These cairn-like structures are noted to be constructed for ritual and prayer purposes.
Engineered quartz is widely used in the developed world for counter tops, window sills, and floor and wall coverings. The vast majority of engineered stone companies are located in Greater China, India, and its birthplace in Italy. [citation needed] One form invented in the early 1980s is Bretonstone.
The private Spanish company Cosentino brand Silestone and the public Israeli company Caesarstone are the most recognizable brands for quartz, as well as Totem Quartz, an Iranian company which has a huge market in the middle east and Central Asia. Gulfstone, an Oman-based company, is the only producer of engineered quartz stone in the GCC.
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