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Celestine is a mineral consisting of
strontium sulfate (
Sr
S
O4). 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
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Hi, my legal name is Leland Bryant Ross, but in Japanese and Esperanto I go by (ROS') Haruo, and since my Wikipedia activity is mostly in Esperanto that's the handle I use here.
Haruo (春男) is a common Japanese male given name; means "Spring Man" if you take the characters at face value.
My homepage (External link) is La Lilandejo.