| Date | Text | |
|---|---|---|
25 Apr 1958
Charles Mauguin |
death Charles Mauguin Died 25 Apr 1958 at age 79 (born 19 Sep 1878). Charles-Victor Mauguin was a French mineralogist and crystallographer who was one of the first to make a systematic study of the silicate minerals. Using X-ray diffraction techniques, he determined the structure of a large number of micas. He also published the atomic structure of cinnabar, calomel and graphite and devised a system of symbols for designation of symmetry properties of crystals, adopted (1935) as international standard. |
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