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The Economic Aspect Of Geology

  [english | ]  

C Leith


Excerpts: [... from the ores of the Lorraine-Luxemburg-Briey district, from the Cleveland ores of England, from the Bilbao ores of Spain, from the high-grade ...... general there is little evidence that the ores were deposited from vagrant solutions of this kind (see pp. 34-35). These ores owe their value to primary ...... copper belt of the Belgian Congo are in the form of tabular masses in ...]
Genres: [classicDownloads: 434