CRYPTOLITE. 

 Ghrysoberyl, Quartz-crystals from Quebec, 

 and Siberian Amethyst. It quickly hardens 

 on exposure into a j^ellow, transparent, resin- 

 j like substance, not volatilizable by heat, nor 

 I soluble in water or alcohol, but rapidly dis- 

 ; solving, with effervescence, in sulphuric 

 acid. It is also soluble in nitric and muri- 

 atic acids. 



Cryptolite, Wohler. Occurs in acicu- 

 lar hexagonal prisms, about aline in length, 

 and of a Avine-vellow colour. Transparent, 

 S.G. 4-6. 



Comp. Ce3 P, in which the 



cerium is in 



part replaced by didymium. 





Analysis bv Wohler : 





Oxide of cerium . 



. 73-70 



Protoxide of iron . 



. 1-51 



Phosphoric acid . 



. 27-37 



102 -58 



The excess arises from the protoxide of 

 cerium contained in the mineral being con- 

 verted by ignition into sesquioxide. 



Decomposed by strong sulphuric acid, the 

 whole being reduced to a dry earthy mass. 



Locality. Arendal, in Norway, imbedded 

 in greenish and rose-coloured Apatite, from 

 which it is separated by dissolving the Apa- 

 tite in nitric acid. 



Name. From ^gyiTTo,-, concealed. 



It has been suggested that Cryptolite is a 

 Cerium-Apatite. 



Bnt. Mus., Case 57. 



Cuban, Breithaupt. A variety of octahe- 

 dral Pyrites. Cubical. Occurs in cubes or 

 massive. Colour between bronze and brass- 

 vellow. Streak dark reddish bronze to black. 

 H. 4, S.G. 4-1. 



Camp. Cu S + Fe3 S^. 



Analysis by Eastwich : 



Sulphur .... 39-01 



Copper 19-80 



Iron ... . . 38-01 

 Silica 2-30 



99-12 



BB fuses readily, giving off fumes of sul- 

 phur. 



Locality. Barracanao, Cuba (whence the 

 name Cuban). 



Cube-ore, Jameson ; Cube-ore of Iron. 

 See Pharmacosiderite. 



CuBE-spAK, Jameson. See Anhydrite. 



Cubic Nitre. See Nitratine. 



Cubic Pyrites. See Iron Pyrites. 



CuBiziT, Werner. See Analcime. 



CuBoiTE, Breithaupt. See Analcime. 



CuiR DE MoNTAGNE. See Mou:stain 

 Leather. 



CUIVRE. 101 



CuivRE Arseniate, Haiiy. See Phar- 

 macosiderite. 



CuiVRE Arseniate en Prisme rhom- 

 BOiDAL oblique, Levy. See Aphanesite. 



Cuivre Arskniate Perrifere, Haiiy^ 

 See Aphanesite. 



Cuivre Arseniate octaedre aigu, 

 Haiiy. See Olivenite. 



Cuivre Arseniate hexagonal lamel- 

 LiFORME, Haiiy. See Chalcophyxlite. 



Cuivre Arseniate octaedre obtuse. 

 Haiiy. See Liroconite. 



Cuivre Arsenical, Dufrenoy. See Do- 



MEYKITE. 



Cuivre Carbonate bleu, Haiiy. See 



AZURITE. 



Cuivre Carbonate TERREUx,/ra%. See 

 Chrysocolla. 



Cuivre Carbonate vert, Haiiy. See 

 Malachite. 



Cuivre Carbonate vert pulveru- 

 lent, Haiiy. See Chrysocolla. 



Cuivre Dioptase, Haiiy, Breithaupt. See 



DiOPTASE. 



Cuivre Gris, Haiiy. See Tetkahedrite. 



Cuivre Hydrophosphate. See Phos- 

 phorochalcite. 



Cuivre Hydrosilicieux, Haiiy. See 

 Chrysocolla. 



Cuivre Muriate, Haiiy, Breithaupt. See 

 Atacamite. 



Cuivre Natif, Haiiy. See Native 

 Copper. 



Cuivre Oxide noir, Haiiy. See Mela- 

 con it e. 



Cuivre Oxide rouge, Haiiy. \ See Red 



Cuivre Oxidule, HaUy. j Copper. 



Cuivre Phosphate, Haiiy, Dufrenoy > 

 See Libethenite. 



Cuivre Pyriteux, Haiiy. See Chalco- 



PYRITE. 



Cuivre Pyriteux Hepatique, Haiiy. 

 See Erubescite. 

 Cuivre Selenie, Haiiy. See Berzelia- 



NITE. 



Cuivre Selenie Argental, Haiiy. See 

 Eukairite. 



Cuivre Spiciforme, or Argent en Epis, 

 Haiiy. Vegetable matter impregnated with 

 black sulphide of copper (Copper Glance). 

 It is found at Frankenberg, in Hessia, and 

 at Mahoopeny, Pennsylvania, U. S. 



Cuivre Sulfate, Haiiy. See Cyano- 



SITE, 



Cuivre Sulfure, Haiiy. See Copper 

 Glance. 



Cuivre Sulfure Argentifjere, Levy. 

 See Stromeyerite. ^ 



Cuivre Sulfure Hepatique, Haiiy. 

 See Variegated Vitreous Copper. 

 II 3 



