140 



NEW YORK STATE MUSEUM 



K2O .. 

 Na.O . 

 Li.O .. 

 H2O — 

 H2O + 

 P2O5 . . 

 V,Os .. 



C02 .. 

 s ..... 



Tola! 100 



Fe . . . . 

 Sp. Gr. 



81 



75 

 tr. 

 18 



43 

 20 

 tr. 

 12 

 07 



not det. 

 not det. 



1-33 

 .04 

 •55 

 .10 

 .14 



02 99-15 



32.82 

 090 4.138 



99-23 

 32-59 



When recast the above analyses yield the following percentages 

 which are approximate but unquestionably near the truth. No. 3, 

 however, can not be recast with so great an excess of Fe203 over 

 FeO. 



Ilmenite 



Magnetite ■ 



Pyrrhotite • • 



Olivine 



Pyroxene • 



Plagioclase 



Orthoclase 



Apatite 



Calcite 



Kaolin 



Water . • . 



NiO.CoO 



Spinel 



Corundum 



V.O5 



P.O5 



In the quantitative system, no. i comes under class II Dosa- 

 lane, order 5, Germanare, rang 4, Docalcic, Hessase, subrang 3, 

 Persodic, Hessose ; no. 2 falls in class IV Dof emane, order 4, 

 Domitic, Adirondackare, suborder 3, Tilhemic, Champlainiore, rang 

 T, Permirlic Champlainiase, section i, Permiric Champlainiose. 

 These last names will suggest the large part that the Adirondack 

 titaniferous magnetites play in the nomenclature of the system. 



Ledge Hill mines. About 2 miles a little south of west from 

 the village of Westport an abrupt hill rises to a hight of 1140 feet. 

 On the northeastern side and a short distance below the summit two- 

 pits have been opened upon masses of ore in the gabbro. The ore 



I 



2 



2.13 



29.42 



2.09 



22.97 



.18 



-35 



16.93 





13-41 



22.91 



56.70 



13.62 



4-45 





•34 





.20 



.20 



3-10 





.18 



1-33 



.02r 







5-97 





.92 





•55 





.04 



