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Rocks are not minerals. They are composed on one or more minerals. For example granite is composed primarily of the minerals quartz, potassium feldspar, and albite. There are some rocks, however, that are composed of substances that aren't minerals. Examples include coal, which is mostly organic, and glassy rocks such as obsidian, pumice, and some varieties of tuff.

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Q: What are some rocks that aren't a mineral?
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Is cobalt mineral igneous rock sedimentary rock or metamorphic rocks?

Cobalt is a mineral, not a rock.


What is a mineral an element or mixture?

A mineral is basically a mixture of different substances that consist of rocks (solid form) and some other things. While it is in its other form (liquid) it contains some useful substances such as zinc and etc.


Are all rocks minerals?

Rocks may be made of one type of mineral or a combination of several.


Where do you get minerals from?

From their ore's, ie from their individual mineral bearing rocks.


What rocks have salt in them?

Sodium chloride is not a rock: in the nature NaCl exist as the mineral halite.

Related questions

Are rocks non renewable resources?

Rocks arent renewable


How are foliated rocks classified?

the arent


What are some Common rocks and minerals?

rocks: igneous rocks,metamorphic rocks,sedimentary rocks ect.................


Do rocks contain non mineral matter?

Rocks contain non-mineral matter. Examples of these are water and gases such as hydrogen and radon. Other compounds like hydrocarbons can also be a component of some rocks.


Some WHAT igneous rocks have individual mineral crystals that are too small to be seen without magnification?

Some extrusive igneous rocks have individual mineral crystals that are too small to be seen without magnification.


Does a mineral have to be in rocks?

No, to make a rock a mineral does not have to be in it.


How would you go about figuring out which one is a rock or mineral?

Most rocks are composed of several minerals. Some rocks, such as limestone, can have only one mineral. Some rocks, such as obsidian, a volcanic glass have no distinguishable minerals. A mineral has a specific range of chemical compositon and a stable crystalline structure. If the substance in question does not have a crystalline structure, then it is a rock.


What is the disease that has people eating rocks?

Must be some kind of mineral deficiency.


What are round rocks with rocks inside them?

A round rock with pretty crystals of some mineral in them is called a, "Geode" (jee-owed)


What mineral colors blood clay and some rocks red?

The most common cause of red color in rocks is iron.


What types of rocks and minerals can be found in surtsey iceland?

SURTSEY ROCKS AND MINERALSIgneous Rocks and Sedimentary RocksCalcite mineral and Halite Mineral


Do leprechauns like rocks?

Leprechauns arent real.......