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Quartz شراء في حي مصر الجديدة
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Quartz

Quartz

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Quartz is the second most abundant mineral on Earth, second only to Feldspar. Quartz can appear in sedimentary, metamorphic and igneous rocks but is not classed as a rock but a silicate mineral. The structure of quartz is mostly made up of a skeleton of silicon-oxygen tetrahedra. The hardness level of quartz on the Mohs scale is 7 and it has a density of 2.65g/cm³.

Pure quartz is normally colorless or white. Coloured quartz normally includes rose quartz, amethyst, smoky quartz, milky quartz, and others.

Quartz normally forms crystals, and ideal crystal shape is a prism ending with pyramid shape at the end, though in nature it is rare to find this as crystals normally inter-grow, distorting the shape. Well-formed crystals may reach several meters in length and weigh hundreds of kilograms.
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Quartz
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