High Quality Content by WIKIPEDIA articles! Xanthoxenite is a mineral found in Australia, Brazil, Portugal, Spain, Ukraine, and the United States. It was first described in 1920. 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 mineraloids and do not have a specific chemical composition. Minerals range in composition from pure elements and simple salts to very complex silicates with thousands of known forms. The study of minerals is called mineralogy.
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