PHYSIOGRAPHY. 



Vauquelinite Vitreous Copper. 



257 



2. Analysis. 



Oxide of lead 60-87 



Oxide of copper 10-80 



Chromic acid 28 33 



3. It occurs at Beresof in Siberia, along with Red Lead-Ore and Py- 

 romorphite, and is said to be found in Brazil. 



VELVET-BLUE COPPER. 



Short capillary crystals, in velvety druses and coatings. 

 Lustre pearly. Color bright smalt-blue. Translucent. 



1. It has been found lining drusy cavities in Limonite, at Moldawa in 

 the Bannat of Temeswar. 



VlGNITE. 



Massive : composition granular. 

 Color dark greenish blue. 

 Sp.gr. = 3-71. It is magnetic. 



2. Analysis. 

 By KARSTEN. 



Oxide of iron 49-14 



Protoxide of iron 35-30 



Caibouic arid 1106 



Phosphoric acid 4-50 



2. It is found in Jura limestone, at Vignes. 



3. It appears to belong to the species Magnetic-Iron. 



VITREOUS COPPER. Prismatic Copper- 

 Glance. MoHS. 



Primary form. Right rhombic prism. M on M = 

 35'. 



Secondary forms. 



Fig. 461. 



Fig. 462. 



