102 CUIVRE. 



CuivRE SuLFUKE VIOLET, De Bom. See 

 Ekubescite. 



CuivRE Vanadate. Soe Volborthite. 



CuiVRE Veloute, Levy. See Lettso- 



MITE. 



CuivRE ViTREUx, Brochant. See Cop- 

 per Glance. 



CuMENGiTE. The name given by Kengott 

 to a White Antimony from the province of 

 Constantine, in Algiers, after C. Cumenge, by 

 whom it was analysed. 



CuMMiNGToNiTK, Dewey. A variety of 

 Anthophyllite, containing a large quantity 

 of oxide of iron. It is often scopiformly 

 arranged, and resembles an asbestiform 

 Tremolite. Colour ash-grey. Lustre silky. 



Comp. (|Fe + |Mg)4 SiS. 



Analysis (mean of two) by Smith ^ Brush : 

 SiUca ..... 50-91 

 Magnesia . . . . lO-SO 



Lime trace 



Protoxide of iron . . . 32-60 

 Protoxide of manganese , 1-63 

 Alumina . . . . 0-92 

 Soda ..... 0-64 



Potash trace 



Water 3-04* 



100 04 



BB alone, fuses with great dilRculty. 



Localities. Cummington and Plainfield, 

 Massachusetts, U. S. 



Brit. Mus., Case 35. 



Cupreous Anglesite. See Linarite. 



Cupreous Arseniate OF Iron, Boumon. 

 See ScoRODiTE. 



Cupreous Bismuth, Phillips. See Wit- 



TICHITE ; also TaNNENITE. 



Cupreous Manganese, Phillips. Occm-s 

 massive; reniform, botryoidal, stalactitic, or 

 earthy. Colour and streak bluish -black. 

 Lustre resinous. Opaque. H. 1-5. S.G. 3-1 

 to 3-2. 



Comp. Hydrous oxides of manganese, 

 containing from 14 to 25 per cent, of black 

 oxide of copper, 4 to 18 per cent, of oxide 

 of cobalt, Avith various other impurities. 



BB infusible, but becomes brown ; with a 

 mixture of soda and borax yields reduced 

 copper. 



Localities. Schlackenwald, in Bohemia. 

 Camsdorf. Lauterberg, in the Harz. 



Cupreous Sulphate of Lead, Brooke, 

 Phillips. See Linarite. 



Cupreous Sulphato-carbonatb of 

 Lead, Brooke. See Caledonite. 



Cupreous Sulphuret of Silver. See 

 Stromeyerite. 



Cupriferous Calamine. See Tykolite. 



CYANOLITE. 

 Cupriferous Marlite, Kinoan. Bitu- 

 minous Schist (Kupfer Schiefer), acciden- 

 tally impregnated w"ith Copper Pyrites, or 

 Purple or Vitreous Copper Ore. 



M. P. G. Wall-case 17, Nos. 745 to 748, 

 from Eisleben. 



Cupriferous Sulphuret of Bismuth, 

 Phillips. See Wittichite ; also Tannenite. 

 Cuprite, Haidinger. See Red Copper. 

 Cuproplumbite, Breithaupt. Cubical: 

 occurs massive-granular, with a cubic cleav- 

 age. Colour blackish lead-grey, with a me- 

 tallic lustre. Streak black. Rather sectile 

 and brittle. H. 2 5. S.G. 6-4 to 6 42. 



Comp. -e-u S + 2Pb S, or (-G-u, Pb) S = 

 sulphur 15-1, lead 65-0, copper 19-9 = 100-0. 

 Analysis bv Plattner : 



Lead " 64-9 



Copper 19'3 



Silver 0-5 



Sulphur and loss . . . 15-1 



100-0 



BB on charcoal, surrounds the assay 

 with an areola of oxide of lead and sul- 

 phate of lead ; with soda affords a globule of 

 metal. 



Locality. Chili. 



Cyanit, G Rose. Cyanite, Brochant, 

 Kirwan. See Kyanite. 



Cyanolite, H. How. A mineral form 

 ing the central part of a reniform nodule, 

 partly imbedded in crystalline trap. No 

 crystalline structure. Colour bluish-grey. 

 Subtranslucent in very thin pieces; trans- 

 lucent at the edges. Lustre dull. Streak 

 white. Rather brittle. Fracture flat con- 

 choidal, even. H. 4-5. S.G. 2-495. 



Comp. Ca* Siio + 



5H, 



being bv far the 



most highly silicated combination of lime 



^'et met with. 







Analysis : 







Silica . 





. 74-15 



Alumina 





. 0-84 



Lime . 





. 17-52 



Magnesia . 





. trace 



Potash . 





. 0-53 



Water . 





. 7-39 



100-43 

 In matrass gives off water and becomes 

 white. 



BB in platina forceps becomes rounded at 

 the edges. With borax and soda affords 

 transparent globules. Decomposed by mu- 

 riatic acid, affording slimy silica. 



Locality —The Bay of Fundy, on the 

 shore of Annapolis Co., two miles E. of 

 Black Rock. 



