f)0 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 58 



GERMANY (Continued) 



tinct groups: (1) pyrite-blende group, including iron-pyrite, zinc-blende, argentif- 

 erous galena and copper pjrite with some arsenical and magnetic pyrites, more 

 rarely polybasite and native silver; (2) the stanniferous group, including tinstone 

 in columnar crystals, molybdenite, specular-iron ore, etc. 



The pyritic and stanniferous ores were the last constituents deposited from the 

 siliceous solutions. 



531. . Die Erzlagerstatten. 



Erl. gcol. Specialkarte Kon. Sachsfii, 1903, Leipzig, pp. 40-.")". 



Digest: Trans. Inst. Mg. Eng., Vol. 27, I'JO.j, London and Xewcastle-upon-Tyne, 

 p. 63!). 

 The Graupen tin deposits are described. 



. See No. 1299. 



532. Beust, — , VON. Ueber die Zinnerzlagerstatten von Schlaggenwalde. 



Berg. HUtt. Zeit., Vol. 27, 1868, Leipzig, pp. 3-4. 



533. Blode, Gottlob von. Versucli einer Tlieorie iiber die Bildung des 



Geyer'schen Stockwerkes. 



Tasch. ges. Min., Vol. 10, I, 1816, Frankfurt-am-Main, pp. 1-32. 

 Not available to the authors. 



534. BoNNARD, A. H. DE. Essai geognostique sur I'Erzgebirge ou sur les 



Montagnes metalliferes de la Saxe. 



Journ. Mines, Vol. 38, ISl.'i, Paris, pp. 261-318, 3^1-382, 415-452. 



Also Tasch. ges. Min., Vol. 16, 1822, Frankfurt-am-Main, pp. 94-136, 508-538. 



Treats of the Saxon tin mines. 



535. Breithaupt, A. Die Paragenesis der Mineralien. Freiberg, 1849. 



Said to treat of tin deposits of Germany. 

 Not available to the authors. 



Brown, A. Selwyn. See Nos. 1307 and 1308. 

 Charleton, Arthur G. See No. 1310. 



536. Charpentier, J. F. W. Mineralogische geographie der Thursachsischen 



Lande. 



1778, Leipzig, geol. map, wood cuts 7. 



Contains many references to the tin deposits at Altenberg and other places 

 in Saxony. 



537. CoTTA, Bernard von. Das Alteuberger Zinnstockwerk. 



Berg. Hutt. Zeit., Vol. 19, 1860, Leipzig, pp. 1-2. 



538. . Mineralien der Freiberger Erzgange. 



Berg. Iliitt. Zeit., Vol. 19, 1860, Leipzig, pp. 301-305. 



Gives a list of the tin and other minerals of the Freiberg ore deposits. 



539. . Altenberg Zwittergestein Festschrift zum hundertjahrigen 



Jubilaum der Konigl. Sachs. Bergakademie zu Freiberg. 



1866, Dresden, p. 1.56. (Not seen.) 



Digest: Trans. Roy. Geol. Soc. Cornwall, Vol. 9, Penzance, p. 175. 



" Prof, von C'otta proves that there is a gradual passage from fine grained reddish 

 granite to the almost compact black stanniferous Zwittergestein. The Zwitter- 

 gestein is an altered granite which has lost about 3 per cent of silica and 2 per 

 cent of potash and has taken up 4 per cent of ferrous oxide, and M: per cent 

 of stannic oxide."— C. Le Neve Foster. 



