DAJB+4.2

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=**Vocabulary**=


 * Solution:** When one substance mixes with another substance.


 * Vein:** A narrow crack filled with a certain kind of mineral that is very different from its surrounding rock.

=Outline=


 * ===Processes that form minerals===


 * ===Minerals from magma:===
 * Mineral crystals that form from magma usually form underground and grow larger if left untouched for a long time.
 * The longer it takes the magma/lava to cool, the larger the crystals. Magma deep below the surface cools slowly and forms large crystals.
 * the amount of gas and chemical composition of the magma also determine the size of the crystals.
 * ===Minerals from hot water solutions===
 * when a hot water solution cools the minerals crystallize
 * metals that crystallize in the cracks in rock are called veins
 * minerals form around the mid-ocean ridge when water seeps into cracks in the ocean floor and is heated by the magma.it then gets forced out and when it touches the cold ocean water it cools and crystallizes


 * ===Minerals formed by evaporation===
 * when a water solution evaporates the minerals crystallize
 * some minerals that form from evaporation are: halite, gypsum, calcite, and potassium


 * ===Where minerals are found===
 * most commonly found near volcanic activity or mountains