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Why do clay minerals change to mica in the metamorphism of shale?
Wiki User
∙ 12y ago
Because it does,that the main reason jk
The mild heat and pressure that changes clay into shale causes the minerals in the clay to align and compress into more crystalline layers, ie. mica.
Wiki User
∙ 12y ago
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Is shale foliated?
No. Shale is laminated. Foliations arean allignment of minerals due to increase in temperature and pressure during metamorphism. The laminations in shale however are a result of the plate like nature of clay minerals (more technically known as phyllosilicates) which when deposited lie flat against each other forming the lamina seen in shales.
How does the origin of slaty cleavage differ from the origin of fissility in shale?
Slaty cleavage is a result of stress and strain during the metamorphism process where the minerals that make up the slate become deformed and or re-crystallise with an orientation normal to the principle stress field. The fissile nature of shale is a result of the preferential alignment of clay minerals during the formation of the rock. This is because clay minerals are plate like and so form horizontal layers much like you would get if you stacked playing cards.
What kind of rock is slate?
Slate is a fine-grained, foliated metamorphic rock that is created by the alteration of shale or mudstone by low-grade regional metamorphism. It is popular for a wide variety of uses such as roofing, flooring and flagging because of its durability and attractive appearance.
Is shale metamorphic?
metamorphic rocks change form after being subjected to certain climates and humidity. Shale make up 60 per cent of the sedimentary rocks and metamorphism in shale is very common with the biggest diversity. Shale most commonly becomes slate.
What mineral is formed by the weathering of feldspar and other silicate minerals and is the principle mineral in clay and shale?
Kaolinite/Kaolin.
A fine grained sedimentary rock that forms slate when placed under extreme heat and pressure?
The rock you are referring to is shale. Shale is a fine-grained sedimentary rock composed of compacted clay and silt particles. When subjected to intense heat and pressure, shale can undergo metamorphism and transform into slate. This process of metamorphism causes the clay minerals in shale to recrystallize, resulting in the characteristic foliated texture of slate.
What changes occur in shale during regional metamorphism?
The change is in the alignment of the clay minerals and parallel alignment of micaceous minerals, from the stress of compressional forces. The water content of the shale is reduced, increasing the rock's specific gravity, and the alignment of the minerals results in a slaty cleavage.
What is the difference between clay and shale?
THE DIFFERENCE IS THAT CLAY IS MOIST, SOFT, AND SMOOTH. SHALE IS rock of fissile or laminated structure .
What minerals are often present in shale?
Clay minerals, quarts, feldspar
Is shale foliated?
No. Shale is laminated. Foliations arean allignment of minerals due to increase in temperature and pressure during metamorphism. The laminations in shale however are a result of the plate like nature of clay minerals (more technically known as phyllosilicates) which when deposited lie flat against each other forming the lamina seen in shales.
How does schist form from shale?
Shale rocks are formed in the deep waters of swaps, oceans and lakes where the water is still and the fine clay and silt particles are able to settle to the floor. Shale rocks can easily erode due to weathering.
Is shale a type of volcano?
== Shale is a sedimentary rock, comprised of lithified mud and clay minerals.
Is it possible for rock to be formed from clay particles?
Yes. Compaction and cementation of clay minerals can result in the formation of shale and claystone.
How does the origin of slaty cleavage differ from the origin of fissility in shale?
Slaty cleavage is a result of stress and strain during the metamorphism process where the minerals that make up the slate become deformed and or re-crystallise with an orientation normal to the principle stress field. The fissile nature of shale is a result of the preferential alignment of clay minerals during the formation of the rock. This is because clay minerals are plate like and so form horizontal layers much like you would get if you stacked playing cards.
What kind of rock is slate?
Slate is a fine-grained, foliated metamorphic rock that is created by the alteration of shale or mudstone by low-grade regional metamorphism. It is popular for a wide variety of uses such as roofing, flooring and flagging because of its durability and attractive appearance.
How are slate and shale alike?
Dark Colour, Clay mineral composition (Kaolanite), Laminations of minerals
What minerals are present in shale?
Minerals could include clays, feldspars, quartz, micas, and pyrite.
