RELATION OF ORE SHOOTS TO INTERSECTIONS. 
211 
mine contains ore at the intersection of the Peggy vein with the north-south fissure. 
An ore body at the intersection of a sheeted zone with a dike in the Elkton mine 
is shown in fig. 36 (p. 338). 
Bull Hill also presents many examples. In the War Eagle mine the ore 
occurs in flat veins, but only along the intersection of these with the steep-dipping 
War Eagle vein. The Ramona vein in the same mine shows, however, an anoma¬ 
lous behavior; a small pay shoot occurring on it is abruptly cut off by a water¬ 
course crossing the vein. A similar case is observed in the Sheriff mines, where 
small shoots are cut off by flat quartz seams. 
Fig. 18.—Stereogram of ore shoots on the Pinto dike and Pharmacist vein in the Pinto and Wrockloff mines. 
The New Haven and Mary Ann mines show many illustrations of this prin¬ 
ciple. In the latter the intersection of flats with the north-south steep-dipping 
vein produces ore. Smaller bodies of ore were also found at the triple intersection 
of fissure systems. In the Ida May ore occurred in the basic dike, particularly 
where fissures came in from the walls. 
The Gold Sovereign, Whisper, and Dante mines contain many small ore 
bodies, most of which are dependent upon intersections of the complicated system 
of fissures which are found in these properties. In the Trail mine close by the 
intersection of two veins is said to have made the best ore in the mine. In the 
Dexter a good body of ore occurred where the Fluorite and Manganese veins unite. 
