20 



PHYSIOGRAPHY. 



Anglesite. 



Fig. 23. 



Fig. 24. 



Fig. 25. 



Mon M' 

 P on a 

 P on e 

 P on/ 

 P on A 

 M on c 

 Mon/ 



M on 

 M on cl 

 M on i 

 a on a 1 

 a on f 

 cl on cl' 

 cl on c2 



128 10' 

 127 56 

 160 42 



79 

 129 

 104 

 142 



30 

 28 

 30 

 20 



Cleavage, parallel with M and / imperfect and inter- 

 rupted. Fracture conchoidal. Surface, M and / often 

 striated parallel to the axis, a in a horizontal direction. In 

 general the faces are smooth, and often of high degrees of 

 lustre. 



