PHYSIOGRAPHY. 



Phenakite. 



103 



PHASTINE. 



Massive : composition lamellar, impalpable. Cleavage, paral- 

 lel with the sides of a rhombic prism, in traces ; also, with its two 

 diagonals most distinct, parallel with the shorter. 



Lustre pearly. Color grey. Streak white. 



Hardness = 1 25 . . . 1-50. Sp. gr. = 2-825. 



1. Locality not mentioned, 



?HENAKITE. Phenakine Emerald. 

 Primary form. Rhomboid. P on P 115 25'. 

 Secondary form. 



Fig. 336. 



P on b - - - 147 42' 30" 

 Ponn 122 17 30 



Cleavage, parallel to n. 



Lustre vitreous. Color bright wine yellow, inclining to 

 red; also inclining to white. Transparent .. .opake. 



Hardness, above Quartz. Sp. gr. =2*969. 



1. Analysis, 



By HARTWALL. 



Silica ... . 55-14 



Glucina 44-47 



Alumina and magnesia .... 0-39 



2. It is found in Perm, 85 wersts from Catharinenburg. 



