514 



MEASUREMENTS OF CRYSTALS. 



MAGNETIC IRON ORE. (Continued.) 



Figs. 442, 443 and 444, secondary forms 

 from Orange county. 



SPECULAR IRON ORE. 

 elusive. Page 385. 



Figs. 445 to 447 inclu- 



Fig. 445. The primary, a rhombohedron. 

 P on P ... 86° 10' and 93° 50' 



Fig. 446. A modification of a very obtuse 

 rhombohedron (Fig. 447), forming 

 a lenticular crystal, St. Lawrence 

 county. 



IRON PYRITES. Figs. 448 to 462 inclusive. 

 387. 



Fig. 448. The primary, a cube. 



Figs. 449, et seq. 



P oxid I52oi5'52" 



P on e 153 26 15 



P on/or/ 143 18 2 



P ono 144 44 8 



d on ci over the base, 109 28 16 



d on/ 157 47 33 



e on e 126 52 12 



e on e' or e" 113 34 41 



ono'or o" 146 26 33 



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