In a fluid (magma) they are free to grow in any direction, and therefore are able to grow into euhedral crystals.
Luster is a property of minerals that describes their appearance. A crystal is the structure that minerals possess due to the arrangement of their atomic particles.
A mineral has a fixed chemical composition, and crystal format. Sometimes we may have two minerals with the same chemical formula - e.g. calcite and aragonite, but differ in crystallization.
water of crystallization or water of hydration or crystallization water
Whether it was fast crystallization - smaller Crystals or slow crystallization - bigger and finer Crystal forms!
look in textbook
Water of crystallization
Ingo H. Leubner has written: 'Precision crystallization' -- subject(s): Nucleation, Crystal growth, Crystallization 'Precision crystallization'
Crystallization
Minerals form in igneous rock as magma or lava cools. The minerals will form from the available chemicals in the magma as their crystallization temperature is reached. The sequence of mineral crystal formation from magma is described in the Bowen's Reaction Series. Metamorphic rock minerals are aligned, altered, or recrystallized from existing rock minerals due to the effects of heat and/or pressure.
All minerals can be classified into one of a variety of crystal systems.
i think you mean crystallization? And that would be when a liquid turns to crystal form
Crystallization