PSNB+4.2

toc =How Minerals Form=

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Vocabulary
Solution: A mixture where one substance dissolves into another Vein: A thin channel or slab of mineral that's different from the rest of the rock around it

Processes that Form Minerals

 * minerals have been forming on Earth for several billion year
 * can be formed in two ways- Crystallization of melted materials, or dissolved materials in water
 * processes in where atoms are arranged with a type of structure

Minerals from Magma



 * When liquid cools to solid- becomes/ forms a crystal
 * depends on rate which magma is cooling
 * magma that rises to surface cools faster than than magma in the ground

Minerals from Hot Water Solutions

 * some elements that make a mineral dissolve in hot water
 * pure metals that have been crystallized can from veins
 * sometimes hot water/ metals fall through cracks crystallizes into veins

Minerals Formed by Evaporation

 * Minerals can form when solutions evaporate
 * thick Haltite forms over millions of years
 * other minerals can be formed when seawater evaporates

Where Minerals are Formed

 * Earth's crust is made mostly of rock forming minerals combined in rock
 * sometimes they bring them together in deposits
 * many valuable minerals are formed near mountains of mountain buildings

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