Questions and Answers
Why is coal not classified as a mineral?
It is made of organic material.
Which mineral property is easily observed, but can be unreliable when it comes to mineral identification?
Color
Which mineral property describes a mineral's resistance to being scratched?
Hardness
A rock containing valuable minerals that can be mined is called __________.
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What are elements that lose electrons and form positive ions called?
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What kind of crystal is halite crystal (rock salt)?
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How do igneous rocks form?
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Which type of sedimentary rock is formed from fragments of minerals or rocks?
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How are igneous rocks classified?
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The metamorphic rock marble will dissolve in the presence of a weak acid. Which rock probably was changed into marble by the addition of heat and pressure?
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A metamorphic rock has grains arranged in parallel layers or bands. What property is this rock displaying?
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An igneous rock is composed primarily of quartz and feldspar. What type of magma most likely formed this rock?
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Study Notes
Coal and Minerals
- Coal is not classified as a mineral because it is composed of organic material.
Mineral Properties
- Color is a property that is easily observed; however, it can be unreliable for mineral identification.
- Hardness defines a mineral's resistance to scratching, an important characteristic for identification.
Rocks and Ores
- An ore is a type of rock that contains valuable minerals that can be mined for resources.
Metals
- Metals are elements that tend to lose electrons, resulting in the formation of positive ions.
Crystal Structures
- Halite, commonly known as rock salt, has a cubic crystal structure.
Igneous Rocks
- Igneous rocks form through the cooling and solidification of molten lava or magma.
- They are classified based on their texture and composition, which provide insight into their formation process.
Sedimentary Rocks
- Clastic sedimentary rocks are formed from the accumulation of fragments of minerals or other rocks.
Metamorphic Rocks
- Marble, a type of metamorphic rock, can dissolve in weak acid; it is derived from limestone through heat and pressure.
- Metamorphic rocks may exhibit foliation, characterized by grains arranged in parallel layers or bands.
Magma Types
- Felsic magma is associated with igneous rocks composed primarily of quartz and feldspar, indicating a specific mineral composition.
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Description
Test your knowledge on the properties of minerals, the types of rocks, and the classification of ores and metals. This quiz covers essential concepts such as crystal structures, igneous and sedimentary rocks, and the characteristics that define minerals. Dive into the fascinating world of geology and discover your understanding!
