Anything special?

[CarolinaFinder2011]

Found this rock in a bunch of odds and ends in a storage building and wondered what sort of rock it was. It has tiny little silver spots all in it. Thanks for any help.

 

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[3xflyfisher]

Possibly a rock called Diorite. Minerals contained, muscovite and or biotite (black and or white mica); plagioclase - a sodium or calcium feldspar - most of the lighter material in the rock; and hornblende, another calcium/sodium silicate, chemically somewhat similar to plagioclase but blackish in color. It could a different type of rock but based on the pic this would be initial guess. No real commercial value. Rounded from bouncing down a stream or river.

Hope this helps.

3xflyfisher

 

[CarolinaFinder2011]

Thanks 3xflyfisher