148 NEW YORK STATE MUSEUM 



In just what form the vanadium is combined is unknown. From 

 its chemical properties similar to phosphorus one would suspect 

 some compound analogous to apatite, just as we have pyromorphite 

 and vanadinite, but although the vanadic oxid exceeds in amount 

 the phosphoric the mineral containing it has never been isolated. 



Ferro-vanadium is manufactured from vanadium compounds by 

 electrical processes and contains about 2^-2j per cent of this ele- 

 ment. It would appear as if the percentage of this valuable sub- 

 stance were too low to make it a serious factor in the value of the 

 ore, but as the industry of vanadium is as yet in its infancy one 

 should speak regarding the future in a conservative spirit. In 

 vanadium steel, now so highly prized for its toughness, there is 

 much less than one per cent vanadium. Elementary vanadium 

 constitutes 77.4 per cent of vanadic oxid O'oO-,). 



^Magnetic iron ores under 50 per cent and not fulfilling the 

 conditions stated above, must undergo magnetic concentration if 

 they are to be utilized. It is with regard to this method of treat- 

 ment that the recasting of the analyses into percentages of ilmenite 

 and magnetite has especial significance. The magnetite would be 

 the mineral saved and the one upon which efforts would be es- 

 pecially expended. The iron in the ilmenite we would expect if 

 not hope to lose, so as to reduce the titanium. The iron in the 

 pyroxene and olivine would pass off in the nonmagnetic tailings. 

 So far as iron is concerned we are therefore reduced to consider- 

 ing alone the magnetite and therefore the following tabular sum- 

 mar\' is presented. iron in 



I m;nite Magnetite magnetite 



Split rock 29.42 22.97 16.63 



Split rock 27.95 32.8 23.74 



Tryan pit 25. 34 1671 12.10 



Tunnel mountain 30.80 29.80 21-58 



Little pond sS-27 38-05 27.55 



Little pond 24.49 16.24 11-76 



Lincoln pond 22-95 44-31 3208 



Oak hill , 9.70 44 -08 31-91 



Kingdom Works 24-64 31 -08 22.50 



Iron mountain, Elizabethtown 30 -So Z5-7Z 25. 86 



These results show that even if the ilmenite and magnetite are 

 so coarsely intergrown as to make a separation feasible, the grade 

 of the ore is too low to make the separation a likely source of 

 profit. On the other hand the ore is extremely hard and fine 

 grained, quite different from the richer and more coarsely crystal- 

 line occurrences at Lake Sanford and parallels can not be justly 



