. CHLORIDE OF LEAD. 



Potash 40 



Water 7-22 



100-18 



BB fuses readily, with intumescence, to a 

 greyish blebby glass. 



Soluble in muriatic acid, giving a floccu- 

 ient precipitate of silica. 



Name. From x^^'-'i<>?, green, ^(ti^ov^ a star, 

 and //&?, a stone. 



Chloride of Lead, Thomson. See 



COTUKNITE. 



Chloride of Potassium. See Sylvine. 

 Chloride of Silver, Allan. See Ker- 



ARGYRITE. 



Chlorite, Werner. Hexagonal ; occurs 

 in tabular six-sided prisms. Colour va- 

 rious shades of dull emerald green in the 

 direction of the axis, and yellowish or 

 hyacinth-red at right angles to it; also 

 piare white or yellowish. Massive varieties 

 olive-green. Semitransparent to subtrans- 

 lucent. Lustre pearly. Yields to the nail, 

 and, when in powder, is unctuous to the 

 touch. Streak corresponding to the colour. 

 H. 1 to 1-5. S.G. 2-7 to 2-85. 



FiR. 114. 



[S3 



. Compact Chlorite is amorphous. Chlorite 

 slate possesses a slaty structure, and frequent- 

 ly contains imbedded octahedral crystals of 

 Magnetic Iron, Hornblende and Garnets. 

 Earthy Chlorite is composed of small, pearly, 

 glimmering, scaly particles. It has a some- 

 what greasy feel, and bears a striking re- 

 semblance to Green Earth. 



Comp. 4 (Mg, Fe), (^1, ?e), 2 Si, 3 H = 



4 Mg Si+Al Si + 3 H. 



Analysis from the Pyrenees, bv Delesse : 

 Silica . . . . " . 32-1 

 Alumina . . . . IS'o 

 Magnesia .... 36*7 

 Protoxide of iron . , .0-6 

 Water 12-1 



100-0 

 Chlorite frequently contains as much as 

 8 or 9 per cent, of protoxide of iron ; those 

 kinds which have more (up to 28 or 29 per 

 cent.) are classed with Ripidolite. 



BB some lose their colour, and fuse at the 

 edges ; with borax affords an iron reaction. 



Localities. The tin mines of Cornwall, 

 where it is known by the name of peach. 

 Also in Cumberland and Westmoreland, and 

 near Llanbei is, in Caernarvonshire, At Port- 



CHLOROPAL. 79 



soy, in Banffshire, it is mixed with Serpen- 

 tine, and is frequently cut and polished, 

 Name. From xXiwg«?, green. 

 This mineral may be distinguished from 

 Mica by its laminje being flexible, but not 

 elastic, while those of Mica are very elastic. 

 It has been proposed by Descloiseaux to 

 divide Chlorite into three groups, Pennine, 

 Clinochlore, and Ripidolite ; to which may 

 be added Leuchtenbergite. 

 Brit. Mus., Case 32. 



3LF. G. Horse-shoe Ca% Xos. 1039-1043, 

 1047. 



Chlorite Ferrugineuse, Delesse. See 

 Delessite. 



Chlorite Spar. A variety of Chloritoid 

 from Katharinenburg, analysed by Erdmann, 

 who considered it to be a distinct species, in 

 consequence of the absence of water. It was 

 subsequently anah'sed by Hermann and Von 

 Kobell, by the former of whom it is sug- 

 gested that the absence of Avater, in the 

 specimen analysed by Erdmann, might be 

 accounted for by its having been burnt at 

 the mine, where the stone is roasted to sepa- 

 rate the Emery. 



Chloritoid. Occurs massive, in coarse 

 folia which are often curved or bent. It has 

 a dark grey or greenish- grey colour, and a 

 weak pearly lustre. Streak uncoloured, or 

 slightly greenish. H. 5-5 to 6. S.G. 3*55. 



Comp. R Si + 2 AlSi + 3 H = (i R + § Al) 



Si + H = silica 27'6, alumina 31-3, protoxide 

 of iron 32-9, water 8-2 = lOO'O. 



Analysis from Katharinenberg, by Her- 

 mann i 



Silica 24-54 



Alumina .... 30*72 

 Protoxide of iron . . . 17-30 

 Magnesia .... 3-75 

 Peroxide of iron . . , 17-28 

 Water 6-38 



99-97 



BB infusible, but becomes darker and 

 magnetic. Soluble in sulphuric acid. 



Localities. Koroibrod, near Katharinen- 

 berg, in the Ural ; Bregatten in the Tj'rol. 



Chloritspath, Fiedler. See Chlori- 

 toid. 



Chlorjiercur. See Calomel. 



Chlorobromid of Silver, Domeyko. See 

 Embolite. 



Chlorocarbonate of Lead, Thomson. 

 See Cromfordite. 



Chloromelan, Kallmann. See Cron- 

 stedtite. 



Chloropal, Bernhardt 8f Brandes. An 



