122 
ALASKAN MINEEAL RESOURCES IN 1904. 
[bull. 291 
The attempts to trace the dike westward were unsuccessful, though 
several prospect holes were sunk in the line of its extension west of 
the 60-foot tunnel noted above, seeming to indicate that the dike ends 
near this tunnel. The hillside here is so deeply covered with talus 
that the actual ending of the dike can not be seen on the surface, and 
the dike rock was not discovered in place in any of the prospect holes 
west of the main tunnel. The limestone bed rock reached in these 
prospect holes is shattered, and the writer was informed by the super- 
'$& 
.Limestone Prospect PorpTryritic Tin-hearing Shattered and 
Txoles Sikes veins nri.neraIi7.ecL 
Limestone 
Approximate scale containing 
o 8oofeet a-Lssemrnated. 
■ ■ i ■ tin. ore 
Fig. f.— Diagram showing field relations of the tin-bearing lodes on Cassiterite Creek. 
intendent of the workings that assays made of it usually show traces 
of tin. 
The limestone on the west side of the creek opposite the main tun 
nel and in line with the extension of Cassiterite lode is very much 
shattered and filled with many veins, which run in all directions and 
vary in thickness from a knife edge to half an inch. The limestone 
along the sides of these veinlets is usually impregnated with cassiterite 
and other dark minerals in small crystals, so that it is possible thai 
parts of it may constitute a stockwork rich enough in tin to pay foi 
minino-. 
