What is the definition of a mineral? What is the difference between an intrusive
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Question
What is the definition of a mineral?
What is the difference between an intrusive igneous rock and an extrusive igneous rock?
What is the difference between the chemical composition of an igneous rock and the crystal texture of an igneous rock? What terms are used for each of these definitions?
Some minerals will break along cleavage planes, whereas other minerals like quartz and olivine will break conchoidally, with no apparent cleavage or symmetry. What factor for these minerals causes this difference in breakage/fracture?
Geologists apply many different methods as you did in your lab, to determine what mineral they are looking at. Be able to name these methods.
What are the two main different types of sedimentary rocks? How is coal classified in this naming protocol? Why?
In Bowen’s Reaction Series, note that Olivine is formed at very high temperatures and pressures, whereas, quartz is formed at temperature/pressure conditions closer to the surface conditions. What patterns do you see in silicate mineral Silica structures/chains from Olivine to Quartz? Is Quartz more or less complex in its atomic structure then Olivine? Why?
What is the definition of Uniformitarianism? Who was responsible for this concept?
What types of rocks can become magma, metamorphic, or sedimentary rocks?
What are the main rock types that geologists classify rocks into?
What are the two types of metamorphic rocks?
What are the two main types of sedimentary rocks?
Igneous rocks are either erupted or remain in the Earth and are not erupted. What are the two terms that describe these two types of igneous rocks?
Explanation / Answer
1. Definition of a mineral : Minerals are formed naturaly in the earth through geological process. Minerals are mainly solid, inorganic and chrystal formed and either chemical compound or single chemical. Exmaples: Gold,silver,copper,zink etc.
2. Difference between intrusive igneous rock and extrusive igneous rock: a)Intrusive igneous rock formed by mcooling magma slowly. Extrusive igneous rock formed by cooling of lava quickly.
b)Intrusive igneous rock last longer because they formed in the earth surface. but Extrusive igneous rock last not too much.
c) Granite, pegmatite, etc are the example of Intrusive igneous rock. Basalt, rhyolite etc are the example of Extrusive igneous rock.
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