Contact Information

Address: C / O Shri Sahajanand Minerals Pvt Ltd. Shri Swaminarayan Vanijya Sankul, Above Bank Of India, Second Floor, Hospital Road, Bhuj, Kutch, Gujarat., Bhuj, Gujarat, India, 370001
Country: [India]
Phone: - - 91-9429-341536
Mobile: -
Fax: - - 91-2832-230670
home products Quartz - Quality B

Quartz - Quality B

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Keywords Other Quartz Products, Quartz - Quality B, , resourcesofearth, India
Category Minerals & Metallurgy > Quartz Products >Other Quartz Products
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Detailed Product Description

Quartz is one of the most abundant minerals, second only to feldspars. About 12% of the mass of the earth's crust is made of quartz. Among the reasons for its abundance are: its stability in a wide pressure and temperature range its chemical and physical resistance to weathering Quartz" is a term that includes both well crystallized and compact forms of silica & is a very common mineral, a chemical compound of silicon and oxygen, silicon dioxide SiO2, commonly called silica. If pure, quartz is a colorless, transparent, and very hard crystalline material of glass-like look. The well-known rock crystals - six-sided prisms with a six-sided pyramid at their ends - are simply well formed crystals of quartz. Quartz appears in a number of coloured varieties. Quartz as a Rock-Forming MineralThe largest amount of quartz is contained in granites, a smaller amount in metamorphic rocks (some of which are derived from granites), and a small amount in sedimentary rocks. The highest concentrations of quartz can be found in sedimentary and metamorphic rocks as sandstone and quartzite, as well as in alluvial and marine sands and sand dunes. It is clear that the quartz in sand and sedimentary rocks has been concentrated by erosion and weathering of other rocks. Igneous RocksQuartz occurs as a rock-forming mineral in igneous rocks if the overall silica content of the original magma surpasses 63-65 weight-percent. When the magma cools, different minerals will successively grow in the still liquid environment while certain ions get concentrated in the mineral grains, the silica and the water content of the residual liquid increases. One of the last minerals to form is quartz, either as its high-temperature polymorph, beta-quartz, or as regular alpha-quartz. Because it simply fills out irregular spaces between already present feldspar and mica crystals, it usually does not develop crystal faces. The longer the cooling of the magma takes, the larger the final mineral grains will be. Quartz Varieties & PropertiesRecently Quartz is classified into two parts. The crystalline forms are commonly called macrocrystalline quartz, while the dense and compact forms are either called cryptocrystalline or microcrystalline quartz (sometimes it is distinguish as megaquartz and microquartz). When people talk about "quartz", they often mean macrocrystalline quartz, whereas cryptocrystalline varieties are often known under the term chalcedony. When it comes to physical properties, quartz is pretty much an average mineral and does not show outstanding or extreme properties. Nevertheless quartz is a technically important material that is valued for the combination of certain electrical or optical properties with a great physical strength and chemical resistance. ApplicationsColored quartz varieties have been used for jewelry for ages, but most quartz is used as a component of concrete: quartz sand and quartz gravel. Pure quartz is needed for producing glass, ceramics, and chemical apparatus. Quartz glass, also known as "fused quartz" or "fused silica" (produced by quickly cooling molten quartz) has a number of interesting properties: its thermal expansion coefficient is very low, it is transparent for ultraviolet light, it is chemically almost inert, and it can form very thin but strong threads used in physical instruments. A well known application of quartz is its use as an oscillator in electric circuits in watches and computers. Less well known is, for example, its use as a membrane in ultrasonic devices. Quartz is of course the major "ore" of silicon, used in the integrated circuits ("chips") of computer. Last but not least, the on-going New Age movement has (re-)discovered quartz and to the marketing of rock crystals and other quartz varieties for esoteric purposes.

Quartz - Quality B

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