HOW MINERALS FORM.

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What is a mineral? How do minerals form?
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Presentation transcript:

HOW MINERALS FORM

HOW MINERALS FORM 1. Crystallization – The process by which atoms are arranged to form a material with a crystal structure

HOW MINERALS FORM 2. Two ways in which minerals can form- 1) crystallization of magma, 2) crystallization of materials dissolved in water

HOW MINERALS FORM 3. Minerals from Magma and Lava – When these liquids cool to a solid state, they form crystals

HOW MINERALS FORM 4. Size of crystals depends on – 1) the rate at which the magma/lava cools, 2) the amount of gas the magma/lava contains, 3) the chemical composition of the magma/lava

HOW MINERALS FORM 5. Solution – A mixture in which one substance is dissolved in another

HOW MINERALS FORM 6. Minerals formed by Evaporation – When ancient seas slowly evaporated, minerals formed (halite, gypsum, calcite)

HOW MINERALS FORM 7. Minerals from Hot Water Solutions – Elements that form minerals dissolve in hot water underground; when the solution cools, the elements crystallize as minerals These iron-rich minerals formed at an undersea vent

HOW MINERALS FORM 8. Vein – A narrow channel or slab of a mineral that is different from the surrounding rock; usually pure metals Silver Vein in Mexico

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