MANGANESE OXIDES AND MANGANESE NODULES IN MARINE DEPOSITS. 733 



Manganese Nodule from Loch Striven, off Clapochlar Point, in 

 30 fathoms, 12/4/92 (see fig. 2). 



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Manganese Nodules from Outer Side of Barrier, Loch Goil, in 

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Water, H 2 

 Manganous Oxide, MnO 

 Ferric Oxide, Fe 2 3 

 Alumina, -A^Os 

 Cupric Oxide, CuO 

 Cobalt Oxide, CoO 

 Calcium Oxide, CaO 

 Magnesia, MgO 

 Alkalies (Na. 2 and K 2 0) 

 Phosphoric Acid, P 2 5 

 Sulphuric Acid, S0 3 

 Chlorine, Cl 

 Carbonic Acid, C0 2 

 Silica, Si0 2 

 Peroxide Oxygen, 

 Organic Carbon, C 

 [Subtract basic Oxy- 

 gen = Chlorine]. 









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