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User:Jigen III

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About me[edit]

Editing since 13 October 2004!

References for my convenience[edit]










Current interests[edit]

Past interests[edit]

Architecture and its styles, Atlas of world history and other neat maps, Certainty, the European Union and the Eurozone (and other attempts at economic integration), Existentialism, Megaregions of the United States, Metrication in the United States, Military-related articles (e.g. Badges of the United States Navy, List of United States Army careers, Uniforms of the United States Military, United States Army branch insignia), Penny debate in the United States, Philosophy (aesthetics, epistemology, ethics, logic, metaphysics), Psychology, Sociology, and Unit Load Device


Celestine
Celestine is a mineral consisting of strontium sulfate (SrSO4). It is named for its occasional delicate blue color. Celestine and the carbonate mineral strontianite are the principal sources of the element strontium, commonly used in fireworks and in various metal alloys. The mineral occurs as crystals, and also in compact massive, and fibrous forms. It is found worldwide, mostly found in sedimentary rocks, usually in small quantities. Pale blue crystal specimens, as shown in this photograph, are found in Madagascar.Photograph credit: Ivar Leidus