84 



PER IV ()UEXSEL 



Analyses calculated as water free. 



■ii(\, . 



VVJ >3 



FrO , 

 Mn( > . 

 CaO , 

 I'.aO. . 

 M.^O 

 Nii,,( ). 

 K,() . 

 IV>. . 



I' . . . . 



a .. . 



Molecular proportions (x 100) 



Sio, 



!•>.< \ 

 !-•<•( ) 

 .MnO 

 (■;!( ). 



r.ao 

 .Mk<> 



Na/) 



IV \ 

 CrV'a 

 I" ... 

 CI . . 



Ill 



76.94 

 4-36 



15.72 

 i-73 



12.33 

 0.32 



18.84 



16.24 

 5.84 

 1.44 

 0.22 



[V 



77.72 

 4.81 



16.43 

 3-47 



10.22 



0.34 

 19.22 



11.51 

 4.81 

 0.94 

 0.21 



79.64 



3-9' 

 13.72 



3.44 



9.60 



0.15 



18.42 



22.69 



3.85 

 0.69 

 0.21 



80.92 



4.36 



16.25 



3.03 

 10.15 



0.25 

 19.29 



1 1. 16 

 4.27 

 0.73 

 0.26 



VI 



VII 



78.85 

 4.13 



16.67 

 2.74 



11.58 

 0.25 



16.06 

 0.01 



16.17 

 4.60 

 0.39 

 0.33 



0.79 

 0.23 



72.16 

 1.29 

 8.32 

 1.82 



15.30 

 0.18 



8.97 



64.26 

 2.14 

 0.62 

 0.13 



0.23 



75-37 

 3-48 



17.68 

 4.48 



10.27 

 o.io 



11.30 



22.22 

 4.26 

 0.82 

 0.28 

 0.09 



0.54 



105.49 



0-35 

 18.27 



1-74 

 1.42 



0.13 

 2.99 



3.42 



10.90 



4.04 



0.13 



0.1 1 



