How are minerals formed?

Answer

Minerals are formed under a variety of conditions, including when molten materials cool, when liquids evaporate or cool and under high temperatures and pressures. Minerals are found in the earth's crust and mantle, and many were created when feldspar and quartz reacted with other materials during the formation of the planet.

Igneous rocks come from magma underneath the surface of the earth. This magma is mostly silicon and contains other elements, such as oxygen, aluminum, calcium, sodium, potassium, iron and magnesium. When magma cools, these rocks harden after water and carbon dioxide are removed from the minerals.

Some sedimentary rocks form after seawater evaporates. Sodium chloride, commonly known as table salt, and calcium sulfate, or gypsum, are two common minerals created after seawater evaporates due to warming by the sun. These minerals are often found in dry, arid places where evaporation temperatures are high.

Diamonds form after coal is superheated and put under intense pressure. Diamonds are created as low as 100 miles below Earth's surface in the mantle. Kimberlites and olivine also form in the mantle and are thrust closer to the surface due to tectonic processes. Other metamorphic rocks and minerals change into gemstones under high heat and pressure, such as jade, emeralds, opal and tourmaline.

Q&A Related to "How are minerals formed?"
Plate Tectonics. Plate tectonics is the theory that the surface of the earth is made up of a series of plates that float on the Earth's liquid mantle. Plate tectonics explains a number
http://www.ehow.com/about_6707397_jade-mineral-for...
(simplification warning) Silicon dioxide is initially formed by the reaction of silicon atoms with oxygen atoms in the extended atmosphere of a star or supernova. Many other compounds
http://www.quora.com/Earth-Science/How-are-mineral...
Rocks are formed from the solidification of molten magma, from the erosion and consolidation of eroded rock, or from the sedimentation of organic matter. Rocks are composed of minerals
http://wiki.answers.com/Q/How_are_rocks_and_minera...
Minerals form from solutions, melts and
http://www.chacha.com/question/how-do-minerals-for...
1 Additional Answer
Ask.com Answer for: How Are Minerals Formed
How Are Minerals Formed?
Minerals are naturally occurring chemical compounds that have a solid, crystalline structure, meaning they're arranged in unique geometric patterns at the atomic level. Minerals are also inorganic; they're not formed from amino acids, peptides, or... More »
Difficulty: Easy
Source: www.ehow.com
About -  Privacy -  Careers -  Ask Blog -  Mobile -  Help -  Feedback  -  Sitemap  © 2015 Ask.com