ORDER XI. PttlSMATIC ANTIMONY-GLANCE. 



GENUS VJ I. ANTIMONY-GLANCE. 

 1. PRISMATIC ANTIMONY-GLANCE. 



Graphic Gold-Glance or Graphic Tellurium. JAM. Syst. 

 Vol. III. p. 377. Prismatic Antimony-Glance. Man. 

 p. 284. Graphic Tellurium. Graphic Gold. PHII.L. 

 p. 327. Schrifterz. WERX. Hoffm. H. B. IV. I. S. 129. 

 Schrifttellur. HAUSM. I. S. 130. Schrift-Tellur. 

 LEONH. S. 183. Tellure natif aurif ere et argentifere. 

 HAUY.Traite', T.IV. p. 326. Tellure natif auro-argen- 

 tifere. Tabl. comp. p. 1 19. Traite', 2de Ed. T. IV. p. 380. 



Fundamental form. Scalene four-sided pyramid. 

 Vol. I. Fig. 9. 



Simple forms. P oo (fc); 1* (P) ; f P + 2 (5); 

 (Pr) 3 (*); (Pr)* (a); (f r + oo) 3 (d); Pr(o); 

 Pr + oo (r) ; Pr + oo (s). 



Char, of Comb, Prismatic. 



Combinations. 1. P oo. Pr. P. ?r+ QD. Pr-f- oo. 

 2. P OD. Pr. P. (Pr) 3 . (Pr) 5 . f P + 2. 

 (Pr -h oo) 3 . ?r -h oo. Pr -f- QD. Fig. 35. 



Cleavage, ?r -h oo, highly perfect ; -Pr -f- oo per- 

 fect though not so easily obtained. Fracture 

 uneven. Surface, Pr + oo vertically streaked ; 

 Pr -|- oo fused like ; the remaining faces smooth. 



Lustre metallic. Colour pure steel-grey. Streak 

 unchanged. 



Very sectile. Hardness = 1-5 ... 2-0. Sp. Gr. 

 = 5-723, MULLEB, VON REICHENSTEIN. 



Compound Varieties. Regular composition of 

 acicular crystals nearly at angles of 60 and 120, 

 in one plane, frequently repeated and imparting to 

 the whole the appearance of certain characters for 



