Ore Deposits. 15. 
FIG. 2. 
Contact Vein. 
Fig. 2 represents a Contact Vein or Deposit. In 
this class of ore deposits the metalliferous accumula- 
tions or vein, is found between the planes of contact of 
dissimilar rocks, which are unlike in their mineral- 
ogical characteristics. Thus in the figure the portion A, 
is slate, and forms the Hanging Wall, while B is lime- 
stone, and forms the Foot Wall; a, b, c, measures the 
Dip Angle of the vein, while its Strike is the course 
along the plane of contact, and C is the Apew of the 
vein. i 
