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Questions and Answers
What percentage of the Earth's crust do silicates primarily constitute?
What percentage of the Earth's crust do silicates primarily constitute?
What elemental combinations characterize carbonate minerals?
What elemental combinations characterize carbonate minerals?
Which structure is the fundamental building block of all silicate minerals?
Which structure is the fundamental building block of all silicate minerals?
Which of the following is NOT a characteristic of sulfate minerals?
Which of the following is NOT a characteristic of sulfate minerals?
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Which of the following minerals is classified as a silicate?
Which of the following minerals is classified as a silicate?
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What is one of the defining characteristics of a mineral?
What is one of the defining characteristics of a mineral?
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Which physical property of minerals measures their resistance to abrasion?
Which physical property of minerals measures their resistance to abrasion?
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Which term describes the ability of a mineral to break along planes of weak bonding?
Which term describes the ability of a mineral to break along planes of weak bonding?
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What property allows certain minerals to emit visible light when heated?
What property allows certain minerals to emit visible light when heated?
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What describes the appearance of a mineral surface when it does not break along cleavage planes?
What describes the appearance of a mineral surface when it does not break along cleavage planes?
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Which mineral group contains phosphate ions (PO4) combined with other minerals?
Which mineral group contains phosphate ions (PO4) combined with other minerals?
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Which mineral property is described as 'a play of colors' or reflections seen in labradorite?
Which mineral property is described as 'a play of colors' or reflections seen in labradorite?
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What anion is characteristic of molybdates?
What anion is characteristic of molybdates?
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What is the term for the color of minerals in powdered form?
What is the term for the color of minerals in powdered form?
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Which of the following minerals is a source of tungsten?
Which of the following minerals is a source of tungsten?
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Which property measures a mineral's toughness or resistance to breaking?
Which property measures a mineral's toughness or resistance to breaking?
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Which type of mineral contains Hydroxyl ions (OH-) and any element?
Which type of mineral contains Hydroxyl ions (OH-) and any element?
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Which mineral group includes minerals containing sulfur anions (S2)-?
Which mineral group includes minerals containing sulfur anions (S2)-?
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What is the chemical formula for borates described in the content?
What is the chemical formula for borates described in the content?
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Which mineral group is specifically associated with Ulexite?
Which mineral group is specifically associated with Ulexite?
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Which of the following minerals is characterized by containing elements together with Tungstate (WO4)2-?
Which of the following minerals is characterized by containing elements together with Tungstate (WO4)2-?
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What determines the luster of a mineral?
What determines the luster of a mineral?
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What is the specific gravity of a mineral primarily a measure of?
What is the specific gravity of a mineral primarily a measure of?
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What term refers to the bubbling that occurs when a carbonate mineral reacts with acid?
What term refers to the bubbling that occurs when a carbonate mineral reacts with acid?
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Which of the following describes the property of a mineral that is strongly attracted to a magnet?
Which of the following describes the property of a mineral that is strongly attracted to a magnet?
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What does the term 'diaphaneity' refer to in mineralogy?
What does the term 'diaphaneity' refer to in mineralogy?
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Which mineral group includes the most abundant minerals in the Earth's crust?
Which mineral group includes the most abundant minerals in the Earth's crust?
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Economic minerals are primarily utilized for which purpose?
Economic minerals are primarily utilized for which purpose?
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Which of the following is NOT a type of non-metallic luster?
Which of the following is NOT a type of non-metallic luster?
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What are sulfosalts primarily composed of?
What are sulfosalts primarily composed of?
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What characterizes vanadate minerals?
What characterizes vanadate minerals?
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Which of the following elements is not a halogen?
Which of the following elements is not a halogen?
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What is the primary difference between intrusive and extrusive igneous rocks?
What is the primary difference between intrusive and extrusive igneous rocks?
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What occurs when lava cools rapidly?
What occurs when lava cools rapidly?
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Which group does not classify as native elements?
Which group does not classify as native elements?
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What type of texture is commonly associated with extrusive igneous rocks?
What type of texture is commonly associated with extrusive igneous rocks?
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Which of the following is true regarding the formation of crystals in igneous rocks?
Which of the following is true regarding the formation of crystals in igneous rocks?
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Study Notes
Igneous Rocks
- Igneous rocks form when magma or lava cools to a solid state.
- Magma is molten rock found beneath the Earth's surface.
- Lava is magma that has erupted onto the Earth's surface.
- Igneous rocks can be either glass or masses of tightly intergrown mineral crystals.
- The size of the crystals in an igneous rock depends on how quickly the magma or lava cooled.
- Large crystals form when magma cools slowly.
- Small crystals form when lava cools quickly.
- Igneous rocks are composed of silicate minerals.
- Igneous rocks can be either intrusive (plutonic) or extrusive (volcanic).
- Intrusive rocks form from magma within the Earth and tend to cool slowly, resulting in phaneritic textures with visible crystals.
- Extrusive rocks form from lava on the Earth's surface and tend to cool rapidly, resulting in aphanitic or porphyritic textures, with microscopic crystals or a mix of large and small crystals.
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Description
Explore the fascinating world of igneous rocks in this quiz. Learn about the formation processes of intrusive and extrusive rocks, the role of cooling rates in crystal size, and the mineral composition that characterizes these essential geological formations. Test your knowledge on how magma and lava contribute to the diversity of igneous rocks.
