We have continued the study of so-called dolomite rocks from different localities to learn the variation in the composition of such rocks. One specimen from a deep well boring at Mason City, Iowa, that was supposed to be limestone proved to be nearly a typical dolomite. The composition of the fifteen specimens we have examined, corresponds to our past experience that specimens of rock called dolomites vary in rather wide limits. 43. The action of certain-The oxidation of sulfite in acid solution by dichromate, bromate and permanganate was found to be incomplete, the oxidant used being several per cent short of that required in each case to change sulfite ion completely into sulfate ion. This is probably due to the formation of dithionate, which is not further oxidized. Iodate behaves very differently.
Proceedings of the Iowa Academy of Science
©1925 Iowa Academy of Science, Inc.
Proceedings of the Iowa Academy of Science, 32(1), 322-322.
Available at: https://scholarworks.uni.edu/pias/vol32/iss1/42