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Crystalline silica exists in seven different forms , depending upon the temperature of formation. The main three polymorphs are quartz, cristobalite, and tridymite. Quartz is the second most common mineral in the world (next to feldspar). [19] Microcrystalline silica consists of minute quartz crystals bonded together with amorphous silica.
Following a new study linking quartz countertops to silicosis, California is considering banning the engineered stone. Quartz countertops, a staple in many high-end kitchens, are being linked to ...
Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The atoms are linked in a continuous framework of SiO 4 silicon–oxygen tetrahedra , with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO 2 .
The new study confirms a rise in silicosis among quartz fabricators in California. Just eight of the 52 cases it describes had been reported previously, according to an accompanying editorial.
Silicosis is a form of occupational lung disease caused by inhalation of crystalline silica dust, and is marked by inflammation and scarring in the form of nodular lesions in the upper lobes of the lungs.
It tested whether companies that manufacture or distribute slabs of artificial stone, commonly marketed as quartz, could be held responsible for the ravages of silicosis, an ancient disease now ...
Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula SiO 2, commonly found in nature as quartz. [ 5 ] [ 6 ] In many parts of the world, silica is the major constituent of sand .
In California, dozens of workers with silicosis have lodged lawsuits against companies like Cambria and Caesarstone. Reyes Gonzalez is the first of them to go to trial, according to his attorneys.
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