120 



PHYSIOGRAPHY. 



Proustite. 



2. It has been found in the beds of Spathic Iron at St. Gertraud, near 

 Wolfsberg in the valley of the Lavant, in Carinthia. 



3. With the exception of form, which, however, has not been satis- 

 factorily determined, it resembles very closely the species Bournonite. 



PROUSTtTE. Aphotistic M elacon e-Blende. 

 Primary form. Rhomboid. P on P=107 36'. 

 Secondary forms. 



1. Fig. 341. 



