![]() | This user has rollback rights on the English Wikipedia. (verify) |
This is an ongoing user project that assists in improving Wikipedia's scope and quality through the preparation, modification and expansion of Wikipedia articles relevant to government, politics, world affairs and general interest. The primary overall focus of this user effort is developing and improving articles relevant to Iowa, Minnesota, North Dakota, South Dakota and Wisconsin government and politics.
Wikipedia Department Directory
Wikipedia: What Wikipedia is not
Wikipedia: Neutral Point of View
![](http://upload.wikimedia.org/wikipedia/commons/c/cd/Editor_-_gold_ribbon_-_3_pips.jpg)
![]() |
---|
4 July 2024 |
![](http://upload.wikimedia.org/wikipedia/commons/9/9b/Geneva_mechanism_6spoke_animation.gif)
![](http://upload.wikimedia.org/wikipedia/commons/1/1d/CoEx_animated.gif)
![](http://upload.wikimedia.org/wikipedia/commons/6/6c/Contactus-wmcolors.png)
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
![]() | |
Wikipedia ads | file info – #195 |