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The two rocks in question may have different percentages of the same minerals, or their method of formation could be different, which can affect the shape and size of the mineral grains. Trace minerals in the two rocks could also alter their appearance, as well as the amount of weathering the rocks have been exposed to.

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Q: Why can two rocks look very different even though they have the same minerals?
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Why are the minerals considered to be the building blocks of rocks?

By definition, rocks are composed of minerals. There is not a single rock that is not composed entirely of minerals. Rocks and minerals are essentially one in the same thing. However, not all rocks are made of just one mineral. The vast majority of rocks contain many different minerals. For example granite, a very common rock, consists of the minerals Quarts, Feldspar, Mica and Hornblende. Limestone, another common rock, consists of the minerals Calcite and Argonite. Marble, a derivative of Limestone, and a nonfoliated metamorphic rock, consists primarily of the minerals Calcite and Dolomite, and sometimes even a bit of Graphite, Iron Oxide, Garnet and Magnetite.


Where can you find minerals?

Everywhere. All rocks are made up of minerals.


What rocks can be identified by the streak test?

The streak test is not a very good identifier of rocks because rocks are composed of combinations of minerals which may have different color streaks. The streak test is mainly used in mineral identification. Even then, it is used in common with other indicators, like hardness, crystal system, and chemical composition.


How are minerals found?

Minerals are elements and compounds. The crystals that make up rocks are minerals. Minerals are found in ore, soil, and dissolved in water. All living organisms contain minerals. Any non-organic rock is composed of minerals.


Which factor keeps the mantle rocks from melting even though the earth's interior temperatures are very hot?

pressure.

Related questions

Why do rocks move in different directions?

First of all, why would rocks move in different directions? Even though rocks could move in different directions, it is not possible for them to move on their own. Rocks have to have force applied to them in order to move.


Why are the minerals considered to be the building blocks of rocks?

By definition, rocks are composed of minerals. There is not a single rock that is not composed entirely of minerals. Rocks and minerals are essentially one in the same thing. However, not all rocks are made of just one mineral. The vast majority of rocks contain many different minerals. For example granite, a very common rock, consists of the minerals Quarts, Feldspar, Mica and Hornblende. Limestone, another common rock, consists of the minerals Calcite and Argonite. Marble, a derivative of Limestone, and a nonfoliated metamorphic rock, consists primarily of the minerals Calcite and Dolomite, and sometimes even a bit of Graphite, Iron Oxide, Garnet and Magnetite.


Where can you find minerals?

Everywhere. All rocks are made up of minerals.


What is the general shape of a mineral?

There is no general shape of a mineral. Each mineral has its own shape, even though two different minerals might have the same shape. A few examples of shapes of minerals are: Rhomboid, rock, and cubic.


What are the three tests for finding the three properties of rocks and minerals?

i dont know i dont even know how i got on this


Are minerals in different shapes?

even shapes diffrent area


Where do you find minerals?

Any rock contains minerals. So does all food. If you are looking for minerals, rocks and mineral specimens, you can find them everywhere in nature.


What rocks can be identified by the streak test?

The streak test is not a very good identifier of rocks because rocks are composed of combinations of minerals which may have different color streaks. The streak test is mainly used in mineral identification. Even then, it is used in common with other indicators, like hardness, crystal system, and chemical composition.


Do sedimentary rocks have layering?

Some do, but others, known as conglomerates are made out of smaller rocks and minerals cemented together.


How are minerals found?

Minerals are elements and compounds. The crystals that make up rocks are minerals. Minerals are found in ore, soil, and dissolved in water. All living organisms contain minerals. Any non-organic rock is composed of minerals.


Are there minerals on venus?

iron and hytrogen and nitrogen even though they are not minerals they are gasses


What is rocks a mixture of?

Important influences on rockabilly include western swing, boogie woogie, and rhythm and blues. Derivative forms are: Surf rock - Garage rock - Punk rock - Country rock - Psychobilly.