Arrangement of Mifierale. ISl 



{Chromateof Lead. Red Lead- Spar). 6. Pyramidal Lead-Spar 

 {Molybdatc of Lead. Yellow Lead-Spar). 7. Pystomous Lead- 

 Spar (rMM^r^/a^c o/iearf. Scheelbleupath Mr.). 8. Orthotomous 

 Leiid-Simr {Corneous Lead- Spar. Hornblei). 9. Prismatic Lead- 

 Spur {Sulphate of Lead. Vitriol-BleierXyW. Plomh Sulphate, H.) 

 10. Axotomous Lead-Spar {Sulphato-Tri- Carbonate of Lead, 

 Brooke). 11. Paratomous Lead Spar {Cupreous Sulphato-Car- 

 bonate of Lead, Brooke). 12. Prismatoidal Lead-Spar {Sulphato- 

 Carbonate of Lead, Brooke). 



Genus VIL White Antimony, or Antimony-Spar. 

 Prismatic. Hardness = 2.5 — 3.0. Sp. gr. = 5.5 — 5.6. 

 1. Prismatic White Antimony. 



Order IL KUPHALOCHALCITE.— Z^i^A/ Saiirte Ores. 

 Not metallic. Colour blue, green, brown, yellow. Streak 

 blue, green, brown. Hardness = 2.0 — 5.0. Sp. gr. 2.5 

 — 4.2. 



Genus L Liriconite. 

 Tessular. Prismatic. Cleavage not monotomous. Hardness = 2.0^ 

 ^2.5. Sp. gr. = 2.8 — 3.0. 



1. Prismatic Liriconite {Arseniate of Copper). 2. Hexaliedral Liri- 

 conite {Arseniate of Iron). 



Genus IL Olivenite. 

 Prismatic. Cleavage very imperfect. Colour neither blue, nor 

 lively green. Streak olive-green... brown. Hardness = 3.0 — 4.0. 

 Sp. gr. = 3.6 — 4.2. 



1. Prismatic Olivenite {Acicular Arseniate of Copper). 2. Diprisma-' 

 tic Olivenite or Libethenite {Phosphate of Copper). 



Genus HL Blue Malachite. 

 Hemiprismatic. Colour and streak blue. Hardness = 3.5 — 4.0. 

 Sp.gr. =3.7 — 3.9. 



1. Prismatic Blue Malachite {Blue Carbonate of Copper), 



Genus IV. Emerald Malachite. 

 Rhombohedral. Prismatic. Colour lively emerald green. Hard- 

 ness = 3.5 — 5.0. Sp. gr. = 3.2 — 3.5. 



1. Rhombohedral Emerald Malachite or Dioptase. 2. Prismatic 

 Emerald Malachite or Euchroite. 



Genus V. Green Malachite. 

 Hemiprismatic. Cleavage perfect. Colour and streak lively green* 

 Hardness = 3.5 — 4.0. Sp. gr. = 3.6 — 4.05. 



1. Hemiprismatic Green Malachite, or common Green Malacliitfi 

 {Grren Carbonate q/'Copi>€r). 



