MINERALOGY. 257 



[Mineralogical communications, No. 5, with a plato.] Sitzungsb. 



k. Ak. Wiss., math.-nat. CI. Abth. i. Bd. Ixix. Heft 1, pp. 



16-36. 

 Glauberito crystals and salt-pseudomorphs from Westeregeln, near 

 Stassfurt, are first described. The glauberite is found in cavities 

 in the clay with rock-salt at a depth of about 120 metres. The crys- 

 tals are mostly tabular from tho predominance of the face (001). The 

 faces (334) and (445) are new. A table of observed and calculated 

 angles is given. Gehlenite from Qravicza is next noticed ; two ana- 

 lyses are given ; magnetite and idocrase in microscopic crystals occur 

 with it. The peripheral parts have been decomposed ; and analyses of 

 the resulting body shows that a mineral corresponding to Samoite of 

 Prof. Dana is the result, containing about 29 p. c! of water. Silver, 

 pseudomorphous after Stephanite, from Pribram is then shortly 

 noticed. E. B. T. 



Zepharovich, Y. E. vox. Mineralogische Notizen vom Hiitten- 

 berger Erzberge in Karnthen. [Carinthian Minerals.] Lotos, 

 Dec. 1874. [Noticed in N. Jahrb. 1875, p. 312.] 



Describes the occurrence of linarite, bournonite, anglesite, and .cerus- 

 site at the Hiittenberg Erzberg. 



TJeber eine Feldspathmetamorphose von Ckyn in Bohmen. 



Min. Mitt. Heft i. pp. 7-12. 



At Ckyn, in Bohemia, felspar is converted into a mineral which, on 

 analysis, is seen to resemble pseudophite. The alteration is therefore 

 similar to that at Plaben, near Budweis, described by Yon Drasche. 



F. W. 11. 



Zerrenner, C. Wulfenit. Min. Mitt. Heft i. pp. 91, 92. 



Gives three kinds of hemimorphism observed in the Wulfenite of 

 Pribram. 1. Crystal is pyramidal at each end, but with P at one end 

 and 2P' at the other. 2. Crystal is short, with P at one end and drusy 

 OP at the other. 3. Crystal of ooP . 2P, with drusy OP at one end 

 only. P. AY. B. 



. Baryt. Min. Mitt. Heft i. pp. 92, 93. 



Notes several physical peculiarities in crystals of barytes from Pri- 

 bram — such as the fact that one face of Pco often exhibits a greasy 

 lustre, while another is vitreous. Also describes crystals in which a 

 nucleus of one form is enclosed in a crj'stal of another. F. W. It. 



. Markasit nach Eugenglanz. Min. Mitt. Heft i. pp. 93, 94. 



Corrects a previously published statement that psoudomorphs of iron- 

 pyrites after polybasito occur at Pribram. Tho replacing mineral is 

 marcasite. F. W. 11. 



. Chalccdon von Trestyan. Min. Mitt. Heft i. p. 94. 



A microscopic section of blue chalcedomy from Trestyan, in Tran- 

 sylvania, showed that tho specimen was not a pseudomorph. 



1874. s 



