EISEXMCKELKIES. 



EiSENNiCKELiuEs, Scheerer. See Iron- 

 nickel Pyrites. 



EiSENNiERE, Werner. Clay Ironstone 

 from Coal-measures. 



EiSENOPAL,. Hausmann. A ferruginous 

 variety of Opal. , 



EiSENoxYD, Leonhard. See Hematite. 



ElSENOXYDHYDRAT. See JjIMONITE 



Eisenpecherz, Werner. See Triplite 

 and Pitticite. 



Eisenperidot. See Fayalite. 



ElSENPHYLLIT, See ViVlANITE. 



Eisenresix, Breithaupt. See Oxalite. 

 EiSENsiiSiTER. See Ironsinter. 

 EiSENSPATH. See Chalybite. 

 Eisenrahm. See Ked Ochre. 

 Eisenrosen, or Iron-roses. See Ba- 



SANOMELANE. 



Eisenrutil. See Gothite. 



EisENCHiJssiG KuPFERGRtJN, Werner. 

 See Chrysocolla. 



EisENSTEiNMARK. See Teratolite. 



Eisentitan, Hausmann. See Rutile. 



EiSEN Vitriol, Werner. See Copperas. 



Eis-spath, Werner. See Ice-spar. 



Eis-stein. (Ice-stone.) See Cryolite. 



Ekebergite, Berzdius. A massive and 

 subfibrous variety of Scapolite of a greenish, 

 greyish or brownish colour. Transparent. 

 Lustre vitreous or resinous. Harder than 

 Scapolite. S.G. 2-746. 



Analysis by Hermann : 



Silica 53-11 



Alumina 



. 27-97 



Peroxide of iron . 



. 2-84 



Potash 



. 0-86 



Soda .... 



. 4-83 



Lime .... 



. 973 



Magnesia 



. 0-39 



Protoxide of manganese 



. 0-27 



100-00 



BB whitens and fuses to a blistered 

 like Wernerite. 



Localities. Arendal in Norway. Hessel- 

 kula in Finland. 



Name. After Ekeberg, the Swedish 

 voyager. 



El.eolite. a variety of Nepheline, 

 comprising the coarse massive kinds which 

 have a greasy lustre. Primary form a right 

 rhombic prism. Colour dark- green, bluish- 

 grey, or brick -red. Translucent. Fracture 

 conchoidal. Frequently opalescent when 

 cut. H. 5-0 to 6. S.G. 2-5 to 26. 



Comp. K, 2Si + 4(Na, Si) + 5(A1 Si) = 

 potash 6-13, soda 16-21, alumina 33-37, 

 silica 44-29 = 100-00. 



ELECTRIC CALAMINE. 123 



Analysis of a brown specimen from 

 Brevig, by Scheerer : 



Silica 44-59 



Alumina .... 32-14 

 Peroxide of iron . . .0 86 



Lime 0-28 



Soda 15-67 



Potash 5-10 



Water 2-05 



100-69 



BB fuses easily to a "white enamel. 



When reduced' to powder, completely de- 

 composed by muriatic acid, and converted to 

 a gelatinous mass. 



Localities. Brevig, Stavern and Frede- 

 ricksvarn in Norway, imbedded in Zircon- 

 syenite. Ilmengebirge in Siberia. United 

 Stages, at Lichtield, Maine; Salem, Mass.; 

 and the Ozark Mountains, Arkansas. 



Name. From 'i>^a.iov, oil, and A/fe?, stone ; 

 in allusion to its peculiar oily lustre. 



The pale blue varieties of Eljeolite possess 

 a slight opalescence like Cat's -eye, and are 

 sometimes used for ornamental purposes. 



Brit. Mus., Case 31. 



Elasmose, Bendant (from \'K(x.irix.o? , a 

 tear'). See Nagyagite. 



Elastic Bitumen, Hatchett, Phillips; 

 Elastic Mineral Pitch, Jameson; 

 Elastiches Bergpech, Reuss ; Elas- 

 TICHES Erdpech, Werner; or Elaterite, 

 Beudant, Hausmann. Occurs in soft reni- 

 form or fungoid masses, which sometimes 

 become harder on exposure. Colour various 

 shades of blackish-brown, with a resinous 

 lustre. Translucent at the edges. Flexible, 

 and elastic. Effaces lead- pencil markings 

 like India-rubber, whence it has obtained 

 the name of mineral Caoutchouc. S.G. 

 0-9 to 1-23. 



Analysis of a specimen from Derbyshire, 

 by Johnston : 



Carbon .... 85*474 

 Hydrogen .... 13-283 



98-757 



Burns readily with a lively yellow flame, 

 and much smoke, giving out a bituminous 

 odour. 



Localities. British. — The Odin Lead- 

 mine, at Castleton in Derbyshire. St. Ber- 

 nard's Well near Edinburgh. Foreign — 

 In a coal-mine at Montrelais, in France. 

 Neufchatel. The island of Zante. 



Brit. Mus.. Case 60. 



Elastic Quartz, Kirwan. See Flexi- 

 ble Sandstone. 



Electric Calamine. A name which 



