PRINCIPAL PHOSPHATE DEPOSITS. 



19 



in lumps isolated in the sand assumes the form of a conglomerate 

 with a sandy cement known under the name of Crassins. These 

 C:assins are very difficult to clean and yield products poor in 

 phosphoric acid. " A sample of nodules from the neighhourhood of 

 Grandpre, analyzed at the Bureau cVEssais cle VEcole cles Mines, 

 had the following composition : — 



TABLE VI,— ANALYSIS OF MEUSE PHOSPHATES. 



I'er cut. 

 Clay and quartz ...... 1-i 



Alumina and oxide of iron 

 Lime .... 

 Phosphoric acid 

 Carbonic acid 



Total . 



25 5 



32-5 



17-5 



9 



98 5 



Other and more complete analyses have been published by 

 Delattre. The following are quoted : — 



TABLE YIL ~ ANALYSES OF VARIOUS PHOSPHATES IN THE MEUSE, 

 ARDENNES, ETC., DISTRICTS. (DELATTRE.) 



1 Is made to total to 99-25 in original French, but only adds to 99*23. 



