Foto Friday – Red Rocks of South Dakota

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South Dakota’s deposits of Sioux Quartzite are red and sometimes pink in color and estimated to be two billion years old.  Almost half the life of the planet itself.

Some of the quartzite, particularly in the southeast side of the state can contain a soft rare mineral called catlinite and is used by the native americans for making caluments, more commonly called peace pipes.

 

 

 

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