ORDER IV. GENERA AND SPECIES. 417 



H. = 3-0. 



G. = 4-2 ... 4-6. 



Prismatic or Acicular Olivenite. J. ii. 164. 



2. DI-PRISMATIC. Prismatic, fr = 111 &&. P+w 



= 95 2'. 



Cleavage, ?r + CD. Pr + eo. Both very indistinct. 

 Streak olive-green. 

 H. = 4-0. 

 G. = 3-6 ... 3-8. 



Di-prismatic Olivenite. J. ii. 166. 



IV. AZURE-MALACHITE. Prismatic. 



Colour blue. 

 H. = 3-5 ... 40. 

 G. = 3-7 ... 3-9. 



1. PRISMATIC. Henri-prismatic. _ = 117 37'. Incli- 

 nation = 2 21'. 

 Cleavage, (r + os) 3 = 59 14'. Less distinct, P , oo. 



Traces of r = 99 32'. 

 Streak blue. 



Prismatic Blue Malachite. J. ii. 167. 



V. EMERALD-MALACHITE. Rhombohedral. 



H. = 5-0. 



G. = 3-2 ...3-4. 



1. RHOMBOHEDHAL. Rhombohedral. R + 1 = 95 48'. 

 Cleavage, R = 126 17'. 

 Streak green. 



Dioptase. ii, 171, 



VI. HABRONEME-MALACHITE. Prismatic. 



Colour or streak bright green. 



VOL. I. 2 D 



