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==Origin==
[http://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English], from Medieval Latin minerale, from neuter of mineralis
*[http://en.wikipedia.org/wiki/15th_century 15th Century]
==Definitions==
*1: ore
*2: an inorganic substance (as in the ash of calcined tissue)
*3: obsolete : mine
*4: something neither [[animal]] nor [[vegetable]]
*5:a : a solid [[homogeneous]] crystalline [[chemical]] element or compound that results from the inorganic [[processes]] of [[nature]]; broadly : any of various naturally occurring homogeneous substances (as [[stone]], coal, salt, sulfur, sand, petroleum, [[water]], or natural gas) obtained usually from the ground
:b : a [[synthetic]] substance having the chemical composition and [[crystalline]] [[form]] and properties of a naturally occurring mineral
*6: plural British : mineral [[water]]
==Description==
A '''mineral''' is a naturally occurring solid [[chemical]] substance that is formed through [[geological]] [[processes]] and that has a characteristic chemical [[composition]], a highly ordered [[atomic]] [[structure]], and specific physical properties. By [[comparison]], a rock is an aggregate of minerals and/or [http://en.wikipedia.org/wiki/Mineraloid mineraloids] and does not have a specific chemical composition. Minerals range in [[composition]] from [[pure]] [[elements]] and simple [http://en.wikipedia.org/wiki/Salt salts] to very [[complex]] silicates with thousands of known forms. The study of minerals is called [http://en.wikipedia.org/wiki/Mineralogy mineralogy].

To be [[classified]] as a true mineral, a substance must be a [[solid]] and have a [[crystalline]] [[structure]]. It must also be a naturally occurring, [[homogeneous]] substance with a defined chemical composition. [[Traditional]] definitions excluded organically derived [[material]]. However, the [http://en.wikipedia.org/wiki/International_Mineralogical_Association International Mineralogical Association] in 1995 adopted a new definition:

:a mineral is an [[element]] or [[chemical]] compound that is [[normally]] [[crystalline]] and that has been formed as a result of [[geological]] [[processes]].

The [[modern]] classifications include an organic class – in both the new Dana and the [http://en.wikipedia.org/wiki/Strunz_classification Strunz classification] schemes.[http://en.wikipedia.org/wiki/Mineral]

[[Category: Chemistry]]