How Minerals Form Answers
How do solutions of water, elements, and compounds that can crystallize into a mineral form deep underground?
Hot water dissolves elements and compounds deep underground; when the solution cools, the materials crystallize into minerals.
Use the diagram to answer each question.
A: Seawater circulates through the crust, is heated by magma, and deposits minerals from a hot solution. B: Magma cools slowly underground, allowing minerals to crystallize. C: Lava cools at the surface, causing minerals to crystallize.
What is a vein in rock?
A vein is a deposit of minerals that fills a crack or opening in a rock.
How do minerals form by evaporation?
When water evaporates, the dissolved elements and compounds crystallize and form minerals.
When elements and compounds that are dissolved in water leave a solution, what is the result?
They crystallize and form minerals.
Use the diagram to answer each question.
Minerals can form when hot, mineral-rich solutions cool and deposit minerals (A), when magma cools and crystallizes underground (B), or when lava cools and crystallizes at the surface (C).
What is a geode?
A geode is a hollow rock with a cavity lined with mineral crystals.
Use the diagram to answer each question.
A: Minerals precipitate from hot mineral solutions near the ocean floor. B: Magma cools slowly underground and forms crystals. C: Lava cools rapidly at Earth’s surface and forms minerals.
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