158 PHYSIOGRAPHY. CLASS II. 



. MALACHITE. 

 GENUS I. STAPHYL1NE*-MALACHITE. 

 1. UNCLEAVABLE STAPHYLINE-MALACHITE. 



Common Copper-Green or Chrysocolla. JAM. Syst. Vol. II. 

 p. 305. Uncleavable Copper-Green. Man. p. 92. 

 Chrysocolla. PHILL. p. 312. Kupfergrlin. Eisenchussig 

 Kupfergrun. WERN. Hoffm. H. B. III. 2. S. 152. 155. 

 Kieselmalachit. HAUSM. III. S. 1029. Kiesel-Kupfer. 

 L.EOVH. S. 289. Cuivre carbonate' vert (in part). HAU v. 

 Traite', T. III. p. 571. Cuivre carbonate vert terreux. 

 Tabl. comp. p. 90. Cuivre hydrosiliceux ou Cuivre hy- 

 drate siliceux (in part). Traite, 2deEd. T. III. p. 471. 



Regular forms unknown. Cleavage none. Frac- 

 ture conchoidal. 



Colour, emerald-green, pistachio-green, asparagus- 

 green, passing into sky-blue. If they incline to 

 brown, the mineral is impure. Streak white, a 

 little shining. Semi-transparent ... translucent 

 on the edges. 



Rather sectile. Hardness = 2-0 ... 3-0. Sp. Gr. 

 = 2-031, a semi-transparent variety. 



Compound Varieties. Botryoidal, reniform shapes 

 or massive varieties : composition impalpable ; frac- 

 t ure more or less perfectly conchoidal. Pseudo- 

 morphoses in the shape of octahedral Copper-ore, 

 rhombohedral Euchlore-mica, &c. Impure va- 

 rieties are often earthy. 



* From retQvXvi, the grape. The varieties hitherto know n 

 generally present botryoidal shapes. 



