162 PHYSIOGRAPHY. CLASS II. 



yields a green globule, and is partly reduced. In nitric 

 acid it is soluble without effervescence. 



2. The varieties of the present species occur in copper 

 veins along with various other ores of copper, also with 

 prismatic Iron-ore, rhombohedral Quartz, hexahedral Iron- 

 pyrites, &c. 



3. It has been hitherto found only in some of the copper 

 mines near Redruth in Cornwall, and in minute crystals 

 at Herrengnmd in Hungary. 



2. HEXAHEDRAL LIROCONE-MALACHITE. 



Hexahedral Olivenite or Cube-Ore. JAM. Syst. Vol. II. 

 p. 341. Hexahedral Liriconite. Man. p. 95. Arseniate 

 of Iron. PHILL. p. 241. Wiirfelerz. WERN. Hoffm. 

 H. B. III. 2. S. 177- Pharmakosiderit. HAUSM. III. 

 S. 1066. Arseniksaures Eisen. LEONH. S. 363. Fer 

 arseniate'. HAUT. Tabl. comp. p. 100. Traite', 2de Ed. 

 T. IV. p. 135. 

 PHILLIPS. Trans. Geol. Soc. Vol. I. p. 23. 



Fundamental form. Hexahedron. Vol. I. Fig. 1. 

 Simple forms. H ; O, Vol. I. Fig. 2 ; D, Vol. I. 



Fig. 31. B, Vol. I. Fig. 33. 

 Char, of Comb. Semi-tessular with inclined faces. 



+ , Vol. I. Figs. 13. 14. ; 5, Vol. I. Figs. 



^ *%> 



17. 18. 

 Combinations, 1. H. -. 2. H. 1. 



3. H. . 5. 4. H. D.5.-5. 



22 222 



Cleavage. Hexahedron, difficult and imperfect. 



Fracture conchoidal, uneven. Surface of the 



hexahedron sometimes streaked parallel to the 



edges of combinations with the tetrahedron. The 



