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Top Supplier Cities : Cairo   -   Alexandria  
Sep-09-22
Supplier From Damietta, Delta, Egypt
Jul-15-15
Supplier From Damietta, New Damietta, Egypt
 
Quartz is a very common mineral, a chemical compound of silicon and oxygen, silicon dioxide SiO2, commonly called silica.Colored quartz varieties have been used for jewelry for ages, but most quartz is used as a component of concrete: quartz sand and quartz gravel.

Uses :
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.
Jul-15-15
 
Talc stone is known for being the softest mineral on earth, and can be easily scratched by a fingernail. Talc is not commonly seen in collections, as it is usually uninteresting and fairly common, although a few deeply colored and crystallized examples are known and well sought after. Also very popular are the Talc pseudo morphs.

Talc forms some very interesting pseudo morphs after many different minerals, and certain localities are known for the specific minerals replaced by Talc. Health concerns including a rare respiratory disease are known to be associated with Talc in its powder form. Although solid forms of Talc are assumed to be safe, and most concerns are only after prolonged exposure.

Uses :
Talc is used as a filler, coating, pigment, dusting agent and extender in plastics, ceramics, paint, paper, cosmetics, roofing, rubber and many other products.
Dec-12-20
Supplier From Damietta, Domyat, Egypt
Jun-12-19
Supplier From Damietta, Damietta, Egypt
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