Johan Gottschalk Wallerius
Swedish geologist
Died when: 76 years 128 days (916 months)Star Sign: Cancer
![Johan Gottschalk Wallerius](http://commons.wikimedia.org/wiki/Special:FilePath/Johannes_Gottschalk_Wallerius.jpg?width=300)
Johan Gottschalk Wallerius (11 July 1709 – 16 November 1785) was a Swedish chemist and mineralogist.
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