894 URANINE. 



uranium, from Joachirasthal, in Bohemia. It 

 occurs in acicular crystals, forming small 

 nodular crusts and velvety druses. Colour 

 grass-green to apple-green. 



Camp. U# + CuS + 2CaS + 18H. 



Analysis (mean of two), by Lindaker : 

 Sulphuric acid . . . 20-03 

 Proto-peroxide of uranium . 36"I4 

 Oxide of copper . . . (roo 



Lime 10-10 



Protoxide of ii'on . . . 0-14 

 Water . . . . . 27 16 



100-12 

 Urai^ine, Haidinger. See Pitchblende. 

 Uranitb, Dana, Nicol, Phillips (in part). 

 Pyramidal ; basal cleas^age very perfect. 

 Occurs almost always in tabular crystals, 

 attached singly or united in small druses. Co- 

 lour siskin-green to sulphur-yellow. Trans- 

 lucent. Lustre sub- adamantine ; pearly on 

 cleavage-plane. Sectile. Streak yellow. 

 Laminae brittle and not flexible. Fracture- 

 not observable. H. 2 to 2-5. S.G. 3 to 3 2. 

 Comp. Phosphate of uranium and lime, 



or (Ca#2^]j-f.3H_ peroxide of uranium 

 62-69, lime 6-10, phosphoric acid 15-54, 

 water 15-67=100. 



Fig. 446. 



nalysis, by Peligot : 





Peroxide of uranium , 



. 63-91 



Lime .... 



. 6-20 



Phosphoric acid . 



. 15-20 



Water .... 



. 15-30 



100-6 



Becomes straw-coloured and opaque when 

 heated. 



BB on charcoal, increases slightly in bulk, 

 and fuses to a black mass with a semi-crys- 

 talline surface. With carbonate of soda, 

 forms a yellow infusible slag. 



Soluble in nitric acid. 



Localities. — English. Cornwall : South 



URANONIOBITE. 



Huel Basset; Tolcarne Mine and Huel 

 Edwards {Autunite) ; also at Gunnis Lake, 

 near Callington ; Stenna Gwynn, &c. 



Foreign. France : at St Yrieix near 

 Limoges ; and in granite at St Symphorien, 

 near Autun. Johanngeorgenstadt and Kiben- 

 stock, in Saxony. Wolf Island, Lake Onega, 

 in Russia. Middletown and Chesterfield ; 

 Massachusetts, U.S. 



Uranite differs from Mica in being neither 

 flexible nor elastic. 



Name. After Uranium (from ov^kvoc^ Ura- 

 7ms), the name given to the planet Herschel 

 by German astronomers. 



Brit, Mus., Case 57. 



31. P. G. Wall- case 13, Principal Floor 

 (British). 



Uranium Ochre, Nicol. See Zippeite. 



Uranium Ovm, Allan. See Pitchblende. 



Uranium Vitriol. See Johannite. 



Urankalk-carbonat, Vogl. An ore 

 of Uranium, nearly allied to Liebigite, oc- 

 curring in scaly aggregations on Pitchblende, 

 at Elias M ine, near Joachimsthal, in Bohemia. 

 Colour siskin-green. Subtransparent to 

 translucent. Lustre pearly on cleavage-face. 

 H. 2-5 to 3. 



Camp. U^ + CuS + 2CaS + 18IL 



Analysis (mean of two), by Lindaker : 



Sulphuric acid . . . 20-03 



Protoperoxide of uranium . 36-14 



Oxide of copper . . . 6'55 



Lime lO'lO 



Protoxide of ii'on . . 0'14 

 Water 27-16 



99-11 



BB on charcoal, infusible: with borax 

 and salt of phosphorus affords the reaction 

 of uranium. 



Dissolves with effervescence in sulphuric 

 acid, a white precipitate being thrown down. 



Uran-kalk-Kupfer-cabbonat, Vogl. 

 See VoGLiTE. 



Uranmica, Jameson. See Uranite, 



Uranochalcite. See Uran green. 



The name Uranochalcite has also been 

 given by Hermann to a mineral from 

 Joachimsthal, occurring in reniform amor, 

 phous masses, with a metallic appearance. 

 Colour between steel -grey and pinchbeck- 

 brown. Opaque. Lustre feeble-metallic. 

 Streak black. Brittle. Fracture compact 

 and slightly conchoidal. H. 4. S.G. 5-04. 



Uranochre, Phillips, Werner. See Zip- 

 peite. 



Uranoniobite. The name given by Her- 

 mann to the crystallized Pitchblende from 

 Stromshein, in Norway. 



