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Earth Science 3.2 How Minerals Form

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  • What is magma?
    Melted rock under the Earth's crust
  • What is crystallization?
    The process by which atoms are arranged to form a material with crystal structure.
  • What is a solution?
    A mixture in which one substance is dissolved in another
  • What is one way minerals can form?
    Crystallization of materials dissolved in water/ Crystallization of molten material
  • How is a geode formed?
    a mineral solution seeps into a crack or hollow rock, then crystallizes as it cools.
  • What is a geode?
    a rounded, hollow rock that is often lined with mineral crystals
  • Where do large mineral crystals form from magma?
    In magma chambers and conduits beneath Earth's surface
  • How do halite deposits form?
    Halite deposits form when sea water slowly evaporates.
  • In what type of environment do minerals crystallize from evaporated water?
    Warm, shallow water in hot, arid regions
  • What is the relationship between magma and lava?
    Lava is magma that has reached the surface.
  • Does magma that cools slower have bigger or smaller crystals?
    bigger
  • Granite has coarse-sized grains. Did it form from magma that cooled quickly or slowly?
    slowly
  • What size crystals form when magma cools rapidly?
    small crystals
  • How are veins formed?
    formed by solutions of hot water and metals which often flow through cracks in the rock
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