21. Manganese dioxide powder is common in Neanderthal archaeological sites.22. The manganese dioxide type of electrolyte should be better. 23. Electrolysis of manganese sulfate yields manganese dioxide, which is called EMD for electrolytic manganese dioxide . 24. Manganese dioxide decomposes above about 530 �C to manganese ( III ) oxide and oxygen.25. By the mid-18th century, the Swedish chemist Carl Wilhelm Scheele used manganese dioxide to produce chlorine. 26. The gold nanowires are strengthened by a manganese dioxide shell encased in an Plexiglas-like gel electrolyte. 27. Current flowing through the crystallized area causes heating in the manganese dioxide cathode near the fault. 28. This electrolyte is formed by pyrolysing of the liquid manganese nitrate into the solid manganese dioxide . 29. The oxidation state 5 + can be produced by dissolving manganese dioxide in molten sodium nitrite. 30. Manganese ( manganese dioxide ) associated with nontronite was once mined near " Le Mandereau ".