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Posted in response to 4th of July Rocks from Laura on July 03, 2007 at 23:39:30:

Re: 4th of July Rocks

Hi Laura;

I think that originally, there were two minerals in gunpowder. They are Niter and Sulfur. Today, I believe most of the potassium nitrate (niter) is synthesized and most of the sulfur is a byproduct of refining ores.

The stuff on the sparklers that make them sparkle is iron filings.

Have a great . . . and safe 4th!


From Don Peck - July 04, 2007 at 10:44:23

Message: 64518

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