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en.wikipedia.org/wiki/Mineral

A mineral is a naturally occurring chemical compound, usually of crystalline form and abiogenic in origin A mineral has one ...

www.dictionary.com/browse/mineral

Mineral definition, any of a class of substances occurring in nature, usually comprising inorganic substances, as quartz or feldspar, of definite chemical ...

www.merriam-webster.com/dictionary/mineral

Define mineral: ore; an inorganic substance (as in the ash of calcined tissue); mine — mineral in a sentence.

webmineral.com/Mineral_Definition.shtml

What is a Mineral? The following definitions on what constitutes a mineral were taken from several different sources and are arranged by year: ...

geology.com/minerals/what-is-a-mineral.shtml

A mineral is a naturally occurring, inorganic solid, with a definite chemical ... To meet the definition of "mineral" used by most geologists, a substance must meet ...

www.collinsdictionary.com/us/dictionary/english/mineral

Mineral definition: A mineral is a substance such as tin , salt , or sulphur that is formed naturally in... | Meaning, pronunciation, translations and examples.

www.yourdictionary.com/mineral

The definition of a mineral is anything not animal or plant life. An example of mineral is dirt. An example of mineral is rocks. YourDictionary definition and usage ...

en.oxforddictionaries.com/definition/mineral

Definition of mineral - a solid, naturally occurring inorganic substance, fizzy soft drinks.

www.oum.ox.ac.uk/thezone/minerals/define/index.htm

When you see a glittering crystal in our Museum you would probably say it was a mineral - and you'd almost certainly be right. But can you say what a mineral ...