The almost 8 most

common elements inside the earth's brown crust area are Oxygen,

Silicon, Light weight aluminum, Iron, Calcium mineral, Sodium,

Potassium, & Magnesium. They compose 98. 5%

of the total crust. A mineral happens naturally, can be described as

soli, inorganic, has chemical substance composition and a

transparent structure. Local minerals are single

components. Compounds happen to be 2 or maybe more. There are

more compound than native. You may identify

nutrients by color, streak, original appeal, hardness,

boobs, and crack. Minerals kind by magma

erupting and forming lava then cooling. They can

as well form simply by evaporation of water made up of

dissolved ions. Silicates are the most common

selection of minerals present in the earth's crust. The

structure of minerals will be orderly. They form

crystalline. A transparent has flat faces and smooth

areas. Igneous dirt are produced from magma.

If they are intrusive (plutonic), they have large

deposits and cooled down slowly. If they happen to be extrusive,

that they cool quickly, have fined grain. The scheme

for igneous ordinary identification is dependent on texture,

color, composition, and density. Sedimentary

rocks are the 2nd part of the mountain cycle. They are

composed of odds and ends of rock and roll that have

been watered by simply rain, drinking water, and other things.

They reduce and cement on top of one another

forming levels. When the normal water evaporates, the

sediments happen to be left behind and forms a fresh rock.

This kind of rock will either be clastic (formed from igneous

rock) or perhaps organic (formed from living remains). The

other form of sedimentary mountain is chemical which

is formed by the evaporation of normal water and the

anticipation on sediments form a new rock.

Metomorphic rock may be the recrystalization (change

w/o melting) of dirt under extreem heat and

pressure. Local metamorphism happens over

large arieas exactly where mountain building has considered

place. Comtact metamorphism happens when

smelted magma has contace w/ sourounding



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