...It is aspecies of bog-earth or peat, mixed with manganese in variousproportions, and found on the estate of Lord Audley at Cappagh, nearCork... 
George Field 「Field's Chromatography」
...is an oxide of manganese, which is quite durable both in water and oil,and dries admirably in the latter...
George Field 「Field's Chromatography」
...It is, however, to benoted that calcium and one other element are also invariably present,while iron, manganese and magnesium are often apparent...
Robert Stawell Ball 「The Story of the Heavens」
...Through his researches the inventions of clocks, lenses, andthe formula for extracting phosphorus, manganese, and bismuth werebrought to light...
Dr. D.M. Brooks 「The Necessity of Atheism」
...Milky quartz was scattered over them, although no similarformation was visible; of manganese, basalt, and ironstone, with othersubstances, there were now no indications...
Charles Sturt 「Expedition into Central Australia」
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