MI\I.I;\I.S 



VALENTINITE. Sl.,n, ; White; JYarly, adamantine ; 



II. _'.:. :;: Q, 5.56; P. 1.5; l\ : i>. :i46. 

 1). l-'nxcd irith soda in the <7"W lulu it i/i< Ida mercury; a, p. 579. 



1. FUMM| with soda it yields :i sulphur reaction on silver. 



CINNABAR, MgS ; Red, vermilion ; Adamantine; 

 H. 2-2.5; G.8.10; F. 1.5; III; p. 304. 



2. With copper oxide it shows chlorine, a, p. 588. 



Calomel, HgCl ; White; Adamantine; H. 1-2; G. 



6.48; Volatile; II. 

 Eglestonite, H&ClzO; Yellow to black; H. 2-3; 



G. 8.327 ; I ; Darkens on exposure. 

 Terlinguaite, H&CIO, Sulphur-yellow, dark olive; 



H. 2-3 ; G. 8.725 ; V. 



3. With copper oxide shows no chlorine. 



Montroydite, HgO ; Red; Adamantine; H. 1.5. 

 E. Reduced with soda on coal, it yields lead buttons. 



Contunnite, PbCl 2 ; White; Adamantine; H. 1-2; 



G. 5.8; Volatile; IV. 



III. Powdered, roasted, and then reduced with soda and borax 

 in R. F. on coal, it yields malleable buttons or scales when 

 washed in the mortar. 

 A. The button is copper or contains copper. 



1. Dissolves in hot dilute HC1 with effervescence (carbonates). 



MALACHITE, (CuOH) 2 CO 3 , Bright green; Vitreous; 

 H. 3.5-4 ; G. 3.96 ; F. 3 ; V ; p. 397. 



AZURITE, Cu(Cu.O.H) 2 (C0 3 )2 ; Azure-blue ; Vitreous ; 

 H. 3.5-4 ; G. 3.77 ; F. 3 ; V ; p. 399. 



Aurichalcite, 2 (Zn.Cu)CO 3 . 3 (Zn.Cu)(OH) 2 ; Pah- 

 green to blue ; Pearly ; H. 2 ; G. 3.6 ; F. Dif. ; V. 



2. The HC1 solution yields a white precipitate with barium 



chloride (sulphates). 



+ . Completely soluble in water, when pure. 



CHALCANTHITE, CuSO 4 .5 H 2 O ; Azure-blue; Vit- 

 reous ; H. 2.5 ; G. 2.21 ; F. 3 ; VI ; p. 540. 



Pisanite, (Fe.Cu)SO 4 .7H 2 O; Blue; Vitreous; H. 2.5; 



F. 3-4 ; V ; Becomes magnetic. 



Krohnkite, CuNa 2 (SO 4 ) 2 .2 H 2 O ; Azure-blue; H. 2.5; 



G. 1.98; F. 1; V; Yellow flame. 

 Cyanochroite,"* CuK 2 (SO 4 ) 2 .6 H 2 O ; blue: Vim-mi-: \ 

 Hydrocyanite, CuSO 4 ; Pale green, Brownish yellow ; 



F. 3; V; Yields no water. 



2T 



