CHLOEOPAL. 



85 



It occurs imbedded in clay-slate in a great number of 

 places, at St Jago di Compostella in Spain ; near Bareges 

 in the Pyrenees ; near Gefrees in the Bayreuth ; besides 

 in the Hartz, in Cumberland, in North America. It has 

 also been found upon the Simplon in dolomite. 



CHILDRENITE. 



Childrenite. BROOKE. Brandes' Quarterly Journal, 

 VoL XVI. p. 274. 



Prismatic. P = ISO 20', 102 SO', 97 5(X. BROOKE. 



a : b : c = 1 : V 2 ' 448 : V 1>103 ' 



Simple forms. P GO (/) ; J P (b) = 135 56', 

 111 42', 85 3'. P (e) ; f ?r + 2 (a) = 55 6' ; 

 Pr + oo (P). 



Cleavage, imperfect parallel to f r -f- oo. Fracture 

 uneven. 



Lustre vitreous, inclining to resinous. Colour yel- 

 lowish-white, wine-yellow, ochre-yellow, and pale 

 yellowish-brown. Streak white. Translucent. 



Hardness = 4-5 ... 5-0. 



Dr WOLLASTON found it to be a compound of phospho- 

 ric acid, alumina, and iron. It has been hitherto found 

 only in the neighbourhood of Tavistock, disposed in single 

 crystals and crystalline coats on brachytypous Parachrose- 

 baryte, hexahedral Iron-pyrites, and rhombohedral Quartz, 

 occasionally accompanied by rhombohedral Fluor-haloide. 



CHLOROPAL. 



Chloropal, BERNHARDI and BRANDES. Schweigger's 

 Journal. Chloropal. PHILL. p. 378. 



Massive : composition impalpable, earthy. Frac- 

 ture conchoidal, passing into earthy. 



Colour pistachio-green. Opake, or scarcely trans- 

 lucent on the edges. 



