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Hematite.
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∙ 14y ago
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How do sediments change over time?
The get compacted with burial and dewater. The grains from which they are made become cemented together and the sediments become sedimentary rocks.
What is the purest form of water. Rain water or mineral water?
Mineral water, rain water's acidity has drastically increased over the past couple of decades and is less pure than it used to be.
What is the compositions of Enamel?
Enamel is over 95 per cent mineral. The principle mineral is hydroxyapatite which is a naturally occurring form of calcium phosphate. The remaning 5% is organic consisting of proteins called enamelins, amelogenins and albumin.
What is the difference between a minerals color and streak?
Color is what you observe when you look at a mineral. Streak is the color of the mineral when in a fine powder form. This can be observed by drawing a sample of the mineral over an unglazed porcelain tile and noting the color of the line left on the tile.
What is the best method for finding the streak of a mineral?
Rub a finger over the mineral
What is it called when you pour acid over a mineral?
This is a chemical reaction between the acid and the mineral.
How would a fossil form through mineral replacement?
Fossils form through the process of mineral replacement beginning when an organism dies and is buried. Groundwater seeps around the organism, and the minerals in the water gradually replace the minerals in the hard parts of the organism. Over time these minerals turn into a stone replica of an organism.
What is the chemical formula of enamel?
Enamel is over 95 per cent mineral. The principle mineral is hydroxyapatite which is a naturally occurring form of calcium phosphate. The remaning 5% is organic consisting of proteins called enamelins, amelogenins and albumin.
What is difference between the net nitrogen mineralization rate and the gross nitrogen mineralization rate?
Gross: total nitrogen transformed form organic to mineral form in soil over a period of time Net = Gross - the ammount re-taken up by microbes during the same period of time Net is a measure of "plant available" mineral nitrogen production.
What you find when you scratch a mineral over a tile?
Usually the mineral deposits a certain color or colors that you wouldn't see otherwise.
What happens when a stream of water flows over the mineral salt?
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What is the principle that states where dead organisms are turned into rock by mineral rich water?
There is no principal that states WHERE this may happen. The conditions that allow this to happen can form at different places over geologic time.
