User talk:Polysiliconindia

Hello!
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Booksworm Talk to me! 05:39, 10 May 2007 (UTC) Bold text

hello.i am trying to get the information about the mineral QUARTZ(silicon dioxide)sio2,that how to clean this stone and what r the processes of this.and also what are the standerds of A.S.T.M. FOR THIS QUARTZ.