Minerals Part II

Match it! Select the correct answer from the pull down...Good luck!

Calcite will scratch gypsum. This is an example of the physical characteristics called ____.

how light is reflected from a mineral

minerals mined because they contain useful substances

If the cost of separating a mineral from waste rock becomes too great, the mineral may no longer be classified as an ore. This happens because ____.

The properties of being ____ make a diamond a gemstone.

the tendency of a mineral to break along a smooth, flat surface

the tendency of minerals to break with rough or jagged surfaces

A gem is _________ and _________