t 



MIXKRALOGT. 241 



Fouque, F. [Leucite and Anorthite.] Zeitsch. deutsch. geol. Ges. Bd. 



xxvi. Heft ii. pp. 444, 445. 

 Letter calling attention to the occurrence of leucite in Colorado, and 

 of anorthite in the older rocks of Santorin. 



Foye, Prof. James C. Tables for the Determination and Classifica- 

 tion of Minerals found in the United States. Pp. 38. 12mo. 

 Chic(if/o. 



Frazer, Prof. Persifor, Jun. Mineralogical Notes. Proc. An. Nat. 



Set. PhUadel. pt. 1 , p. 10. 

 A specimen of chlorite- slate contained crystals of oligoclase, which 

 in turn contained crystals of chlorite. 



. Tables for the Determination of Minerals. Translated from 



the German of Weisbach. Pp.117. 8vo. Philadelphia. 



Frenzel, A. Mineralogisehes. N. Jahrh. Heft vii. pp. 673-686. 



Notes on the vanadinite and descloizite ofWanlock Head; on linarite 

 from the Argentine Kepublic ; on goslarite from Freiberg ; lollingite 

 from Dauphine : the spiauterite or hexagonal cadmiferous blende of 

 Pribram ; famatinite from Peru ; artificial copper-glance and pucherite; 

 Saxon zoblitzite; on remarkable crystals of quartz and calcite from 

 Saxony ; and on twin-crystals of magnetite from the neighbourhood of 

 Sebnitz. F. W. R. 



. Chloritil. Min. Mitt. Heft i. pp. 42, 43. 



Chloritile is a new mineral from Schneeberg, in Saxony, where it 

 occurs in capillary, fibrous, and compact forms, of a pale green colour, 

 associated with aragonite and wapplerite. Its chemical composition 

 may be represented by the formula : — 



8CuO . As p, + 6H^0. F. W. R. 



Prenzel, A., and G. vom Rath. Ueber merkwiirdige Verwachsung von 

 Quartzkrystallen auf Kalkspath von Schneeberg in Sachsen. 

 [Remarkable Growth of Crystals of Quartz on Calcite at Schneeberg, 

 Saxony. J Po(jf/. Ann. Bd. civ. pp. 17-24, with part of plate. 



Description of crystals which exhibit a regular growth of quartz over 

 cr}stals of calcite. 



Friedel, C. Sur certaines alterations des agates et des silex. 

 [Altered Forms of Agate and Flint.] Compt. Rend. t. Ixxxi. pp. 

 970-981. 

 Account of examination of specimens of altered agates from Uruguay. 

 The altered mineral was found to be nearly anhydrous, the silica con- 

 taining only a third of the water of the normal agate. G. A. L. 



Puchs, Dr. C. W. C. Practical Guide to the Determination of 

 Minerals by the Blowpipe.- Translated and edited by T. W. Danby. 

 Pp. 88. 8vo. London. 



After an enumeration and description of the needful apparatus and 

 reagents, an account is given of the blowpipe-reactions characteristic 



1875. E 



