1. O'Leary, Donal. "Silicon Dioxide (i.e. Silica)" 11 Apr. 2003 <http://www.ucc.ie/ucc/depts/chem/dolchem/html/comp/sio2.html>
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3. "Silica – Silicon Dioxide" Azom.com 11 Apr. 2003 <http://www.azom.com/details.asp?ArticleID=1114>
4. Dobkin, Daniel M.. "Silicon Dioxide: Properties and Applications" 11 Apr. 2003 <http://www.batnet.com/enigmatics/semiconductor_processing/CVD_Fundamentals/films/SiO2_properties.html>
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8. . Document: Material Safety Data Sheet-

Pure Tech
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9. "Safety (MSDS) data for silicon dioxide" 11 Apr. 2003 <http://physchem.ox.ac.uk/MSDS/SI/silicon_dioxide.html> Mathai, Nebu.
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Pictures

1. "THE MINERAL QUARTZ" Amethyst Galleries, Inc. . 11 Apr. 2003 <http://mineral.galleries.com/minerals/silicate/quartz/quartz.htm>
2. gettyimages" 11 Apr. 2003 <http://creative.gettyimages.com/source/home/home.asp>