524 



MEASUREMENTS OF CRYSTALS. 



SPHENE. (Continued.) 



Figs. 521, et seq. 



M or M' on a 139°30' 



P on a 159 44 



P on c 140 52 



P on e. 158 18 



P on Ci 146 30 



c oncl, 146 44 



c on e^ 145 18 



c on 64 , 154 52 



di on cZ, 113 24 



di on di 136 



Cj on 62 136 50 



64 on e^ 113 40 



WARWICKITE. Figs. 529 and 530. Page 436. 

 Fig. 529. Tiie primary, an oblique rhom- 

 bic prism. 

 M on M' 93° to 940 



WARWICKITE. 



Fig. 530. A modification of the pre- 

 ceding. 



MOLYBDENITE. Fig, .'■)3I. Page 438. 



Fig. 531. The primary, a regular six- 

 sided prism. 

 M on M 120° 0' 



ORPIMENT. Fig. 532. Page 439. 



Fig. 532. The primary, a right rhombic 

 prism. 

 M on M' 100° 0' 



ALLANITE. Fig. 533. Page 440. 



Fig. 533. A secondary form. 



M on P about 115° 



M on r 128 



P on ?■ 116 



