If the lava cools quickly the crystals will be smaller than if it cooled slowly.
evaporation
The composition of the minerals is not a factor that affects the size of mineral crystals formed in magma. The factors that do affect crystal size include cooling rate, amount of water present, and amount of pressure.
Crystal size is largely dependent on the time the magma takes to cool and solidify. Slow cooling equals large crystals. Fast cooling equals small crystals.
evaporation
The main factor is time spent in cooling and solidifying. More time means larger crystals.
balloon
Yes. When magma cools and solidifies, mineral crystals are formed.
the slower the magma cools the bigger the crystal is
Yes. When magma cools and solidifies, mineral crystals are formed.
Yes. When magma cools and solidifies, mineral crystals are formed.
The process of minerals formation from magma is called crystallization. During this process, minerals solidify and form crystals as the magma cools and hardens.
The faster the rate of cooling the smoother the rock will be. The slower the rate the more rough the texture. The faster it cools the finer the texture of the rock. Slower cooling magmas tend to form courser grained igneous rocks. The more time a magma has too cool, the larger the crystals will be If all the minerals in the magma cools at about the same rate you will have roughly equal sized grains in the rock, in which case the rock will be of phaneritic texture. However you will have conditions in which some of the minerals will solidify while other minerals remain liquid, meaning those that have more time to solidify will have larger crystals . The minerals that solidify will have more time to grow as crystals while the other minerals in that magma will have less time and space to grow as crystals meaning those minerals will have smaller crystals. These rocks with crystals of various sizes are called porphoritic rocks (or porphory)