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Quartz is used for making sand paper. Quarts are the most common compounds on the earths crust, And one of the most useful.
 * __ My Rocks __**
 * __ My minerals __**



Pyrite is used for an ore of gold and copper.

Pyrite is also known as fools gold.



Jasper: people made arrowheads and tools from jasper.

Jasper is the name of a dark red variety of chalcedony.

Calcite Makes up the large part of limestone and marble.

Calcite is one of the most softest minerals, and one of the most common on earth.