1 / 7

How Do Minerals Form?

How Do Minerals Form?. In general, minerals can form in one of two ways: Crystallization of molten material Crystallization of materials dissolved in water to form solutions. What is crystallization?. Process by which atoms are arranged to form a material with a crystal structure.

peterjohnson
Télécharger la présentation

How Do Minerals Form?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. How Do Minerals Form? In general, minerals can form in one of two ways: • Crystallization of molten material • Crystallization of materials dissolved in water to form solutions.

  2. What is crystallization? • Process by which atoms are arranged to form a material with a crystal structure.

  3. What is magma? • Magma is molten material from inside the Earth that hardens to form rock. • Lava is magma that reaches the surface. Which one dries faster – magma or lava?

  4. How do crystals form from molten material? • When hot magma cools inside the Earth, or as lava hardens on the surface. They form crystals. • Notice the crystals in this granite. Compare and contrast the two samples. Why the difference?

  5. What determines the size of the crystals? • Magma deep below = cools slowly = large crystals • Magma closer to the surface = cools faster = medium crystals • Lava = cools rapidly = small crystals Slow Fast

  6. How do minerals form from solutions? • When elements and compounds that are dissolved in water leave a solution, crystallization occurs. The Cave of Crystals in Mexico

  7. How do minerals form from solutions? • Minerals formed by evaporation ( Ex: Halite (salt) forms when ancient seas evaporate) • Minerals from hot water solutions (Ex: Veins of silver)

More Related