PHYSIOGRAPHY. CLASS II. 



found also at St Leonhard in France, and at Schwarzen- 

 berg in Saxony. 



GENUS III. OLIVE-MALACHITE. 

 1. PRISMATIC OLIVE-MALACHITE. 



Acicular Olivenite. JAM. Syst. Vol. II. p. 335. Pris- 

 matic Olivenite, (excepting the first sub-species) 

 Man. p. 96. Right Prismatic Arseniate of Copper. 

 PHILL. p. 31 9. Olivenerz. WERN. Hoffm.-H. B. III. 

 2. S. 170. Olivenkupfer. HAUSM. III. S. 1045. 

 Olivenit. LEONH. S. 283. Cuivre arseniat^ (in part). 

 HAUY. Traite', T. III. p. 575. Cuivre arseniate' 

 octaedre aigu. Tabl. comp. p. 91. Traite, 2de Ed. 

 T. III. p. 510. 



Fundamental form. Scalene four-sided pyramid. 

 Vol. I. Fig. 9. 



Simple forms. P + oo (r) = 92 30', PHILL. ; Pr 

 (1) = 1 10 50', PHILL. ; Pr + oo (n) ; Pr -f oo. 



Char, of Comb. Prismatic. 



Combinations. 1. Pr. P + oo. Pr + o>. Fig. 8. 

 2, Pr. P -h oo. Pr + QD. Pr + QD. 



Cleavage. Traces parallel to Pr and P -f oo, the 

 former being a little more distinct. Fracture 

 conchoidal, uneven. Surface, Pr and Pr -J- oo 

 concave, P -h oo convex, the faces parallel to 

 the axis being curved in the direction of the 

 same line. At the same time uneven. Pr + QD 

 very smooth and even. 



Lustre adamantine, indistinct. Colour, various 

 shades of olive-green, passing into leek-green, 

 pistachio-green and blackish-green, into liver- 

 brown and wood-brown, or also into siskin-green. 



