<P> A mineral is a naturally occurring chemical compound , usually of crystalline form and not produced by life processes . A mineral has one specific chemical composition , whereas a rock can be an aggregate of different minerals or mineraloids . The study of minerals is called mineralogy . </P>
<P> A mineral is a naturally occurring chemical compound , usually of crystalline form and not produced by life processes . A mineral has one specific chemical composition , whereas a rock can be an aggregate of different minerals or mineraloids . The study of minerals is called mineralogy . </P>
any naturally occurring inorganic crystalline substance with a fairly definite chemical composition
any naturally occurring inorganic crystalline substance with a fairly definite chemical composition
mineral
mineral