232 MINEBALOGY. 



drated arseniate of uranium and calcium), Uranospherite (hydrated 

 oxides of uranium and bismuth). These minerals were probably formed 

 by the action of water and oxygen on pitchblende, smaltine, and native 

 bismuth. C. L. N. F. 



Fkazee, Prof." P., jun. [Remarks on the variations in different 

 analyses of the same mineral, and the difficulty in forming any 

 conception of the mutual chemical relations of the elementary 

 components of minerals.] Proc. Ac. Nat. Sci. Philadel. part ii. 

 pp. 92-94, 110-115. 

 JFeedkolm, K. a. Nagra mineralogiska iakttagelser fran trakten 

 kring Nykopiiig. [Mincralogical observations from places about 

 Nykoping.] Geol. foren. Stockholm Porhandl. bdt. ii. pp. 53, 54. 

 The minerals mentioned are Hisingerite, black tourmalin, sea-green 

 felspar. 



. Opal fran zirkonsyeniten vid Fredriksva^rn i Norge. [Opal 



from zircon-syenite near Fredriksvaern, Norway.] Geol. foren. 

 Stockholm Forhandl. bdt. ii. pp. 131-148. 

 Note of occurrence. 

 Feenzel, August. Famatinit und "Wapplerit. Min. Mitt. Heft iv. 



pp. 279, 280. 

 Famatinitc from Luzon has been separated as a distinct mineral 

 (Luzonite), in consequence of its containing arsenic instead of antimony. 

 Famatinite from Peru contains about equal proportions of arsenic and 

 antimony ; and its name is therefore doubtful. Frenzel describes a 

 hydrous arsenate of lime from Joachimstahl, in Bohemia, as a new 

 species under the name of Wapplerite, after Herr Wapplcr of Freiberg. 

 It occurs in minute white transparent crystals, probably monoclinic ; 

 and its composition may be expressed by the formula 2CaO.As20, + 

 SHgO, in which Ca is partially, replaced by Mg. • F. W. R. 



. Mineralogisches. N. Jahrb., Heft vii. pp. 673-686'. 



Gives the name of Miriquidite to a mineral from Schneeberg, in 

 Saxony, which occurs in small rhombohedral blackish -brown crystals, 

 whilst a massive variety is brown with a yellow streak. No complete 

 analysis has been made ; but the mineral contains oxide of lead, per- 

 oxide of iron, phosphoric and arsenic acids, and water. The other 

 mincralogical notes describe : — the minerals accompanying the brown 

 iron-ore of Langenstriegis in Saxony; a substance incrusting certain 

 pseudomorphs of iron-pyrites after magnetic pyrites from Freiberg, 

 which resembles neolite ; the arsenic-glance of Marienberg, merely an 

 impure native arsenic, his analysis giving 95*86 per cent, of that metal ; 

 a seleniuni-hismutJi glance from Guanaxuato, for which he gives the 

 formula 2Bi2Se3 + Bi^Sg ; a mineral from Rezbanya, referred to Oosalite, 

 with a composition represented by 2PbS-|-Bi2S3; a new analysis of 

 Cahrerite, which leads to the formula, 3(Ni02, MgO) As^O. + SILfl ; an 

 analysis of a Russian iron-platinum, FePt^ ; the occurrence of Famati- 

 nite ; and the artificial production of iron-glance by igniting ferric 

 hydrate. F. W. R, 



