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== == == == == == The cap rock on a coal bed is usually a sedimentary rock, (i.e. shale sandstone etc.) but not always shale. Slate is a metamorphic rock, usually derived from shale that has been exposed to high pressures and temperatures over very long periods of time. Ways to tell the difference between slate and shale:
Slate will have a smooth surface, and possible have light glare at a right angle. Shale will have a dull, sandy surface.
Tap them against something hard. Slate will make a "clink" noise, almost like porcelain or ceramic, where shale will make a "thud" sound.
Rub it against your teeth. Slate will be smooth, shale will be gritty.
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Wiki User
∙ 15y ago
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Does coal sink or float?
coal washing is done using the property that coal floats in water while other mineral matter sink in water. The jig that oscillates with coal and water in it actually skims the coal from the top and drains the ash, pyrites and stones at the bottom. Depending upon the intricacy of included minerals in the lumped mass, the matter occupies suspended positions; when broken, the coal floats and other materials sink. Hence, a coal washery has a crusher preceding the jig. kn
Can coal dust be mixed with cement?
Good science guess, yet the core ingredient of cement / concrete / many bricks is coal ash. Coal ash is collected for resale in many products. Coal Ash when mixed with water and specific gravel high grade concrete is formed - this also permanently captures the CO2 of the coal ash in the cement.All particulate minerals / matter have long been trapped or eliminated in the coal power plant processes.This is just and educated guess, but I'm thinking in theory that the coal will float to the top of your cement, as coal is lighter than water, especially if you mix some magnatite in there hehe.
How is coal created?
I agree with your correspondent 'Wiki User'. Coal is being formed today. Its first stage is peat formation, found on moorlands in the UK. As more material lies over it, it becomes compressed and begins to fry out. At this stage it is lignite. Continued compression changes the lignite into coal, a black bright shiny carboniferous rock. Continued compression the coal becomes anthracite. A very hard bright coal, that burns with a hot flame.
Which of The most abstract elements are found at the ladder of Abstraction?
top
Carbon and other nonmetals are found in which area of the periodic table?
they are usually found in the top right area of the table (carbon, nitrogen, oxygen, phosphorus, sulfur, selenium) and hydrogen in the very top left
Shale for road building?
Shale in general is the most abundant of stratified rocks. One of the most popular forms of shale used for building roads is called Marcellus Shale. When this clay shale is nearly pure it is known as argillaceous. When it contains a lot of sand it is arenaceous. You will find that shale varies in color, reddish, very black, or grey. Shale is used mainly for top dressing on roads. To have a good road base slate is recommended.
Information about rocks?
There are three times of rocks. Sedimentary rocks are compressed soil, sand, and other earth components. Igneous rocks were formed by the chemical processes of the formation of the earth. Some rocks are part of the earth's mantle.
Why is coal found in layers?
Because all the minerals piled on top of it and pressed down on it so they all squish on top on it
What happened between the formation of Columbia limestone and the marden creek shale?
the creek dried up and made shale, then what could of happened is it made a layer of shale and later limestone formed and made a layer of limestone on top of shale
Who is the voice of the mom in The Lorax?
Top 5000Jenny Slate
What are the top 15 coal producing states in the United states?
the top 15 coal pruducing stats in the us
What are the top 15 coal-producing states in the United States?
the top 15 coal pruducing stats in the us
Where is the greatest amount of the worlds carbon found?
China is at the top of coal producers.Other important countries are USA, India, Australia and Russia.
Where is the greatest amount of the world's carbon found?
China is at the top of coal producers.Other important countries are USA, India, Australia and Russia.
Why is coal usually found in layers?
I think it is because animals died then mud piled on top the another layer of animals and so on.
Top 5 coal producing countries?
Top coal producers in 2006 were: China USA India Australia South Africa
Where is coal found on the earth?
It is found underneath the ground. It is found in the United states in the Appalachian Mountains from Alabama through Pennsylvania. It is found in Wyoming. It is found in China, India, Australia, Europe, Russia, South Africa, and other places. This is minddrag recommend me. The answer is: Proven coal deposits exist on every continent, including Antarctica. The United States has the world's largest supply of recoverable reserves, or about 24 percent. Coal is found in thirty-eight states, and nearly one-eighth of the country lies over coal beds. Top coal-mining states include Montana, Illinois, Wyoming, West Virginia, Kentucky, Pennsylvania, Ohio, Colorado, Texas, and Indiana.
