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Questions and Answers
What is the characteristic of crystalline substances?
What is the characteristic of crystalline substances?
- They have an orderly and repetitive atomic arrangement (correct)
- They have a random and disordered atomic arrangement
- They have a high solubility in water
- They precipitate from magma
How do crystals grow?
How do crystals grow?
- From aqueous minerals precipitating from water
- By rapid cooling of magma
- From small seeds and sometimes become very large (correct)
- By random accumulation of atoms
What type of minerals precipitate from warm flowing waters?
What type of minerals precipitate from warm flowing waters?
- Igneous minerals
- Aqueous minerals
- Hydrothermal minerals (correct)
- Metamorphic minerals
Under what conditions may minerals not form or be stable?
Under what conditions may minerals not form or be stable?
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What is the defining characteristic of minerals?
What is the defining characteristic of minerals?
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What is the defining characteristic of crystalline substances?
What is the defining characteristic of crystalline substances?
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From where do hydrothermal minerals precipitate?
From where do hydrothermal minerals precipitate?
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What do most igneous minerals precipitate from?
What do most igneous minerals precipitate from?
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How do crystals grow?
How do crystals grow?
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Under what conditions may minerals not form or be stable?
Under what conditions may minerals not form or be stable?
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Study Notes
Crystals and Crystallization Key Concepts
- Almost all minerals are crystalline with a repetitive atomic arrangement.
- Crystals originate from small seeds and can grow very large.
- Igneous minerals mainly consist of silicates and precipitate from magma.
- Aqueous minerals, including highly soluble compounds, precipitate from water.
- Hydrothermal minerals form from warm flowing waters.
- Metamorphic minerals develop through solid-state reactions during metamorphism.
- Some minerals form during weathering or diagenesis processes.
- Minerals may not form or remain stable under all conditions.
- Minerals can have defects involving misplaced or missing atoms.
- Minerals may be heterogeneous in nature.
- Mineral crystals may be twinned, containing domains with slightly different atomic orientations.
- Minerals must be crystalline by definition, with only a few exceptions.
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