bansome.] LODES OF SUNNYSIDE BASIN. 177 
Southwest of the Suimyside the lode becomes the Belle Creole, curves 
sharply westward, and is concealed by alluvium at the head of Lake 
Emma. A short distance northeast of the Sunnyside lode, and nearly 
parallel to it, is the No Name lode, dipping 75° to the southeast, and 
joining the Sunnyside in the Sunnyside Extension ground. Between 
this lode and the Sunnyside are at least three other veins, making in 
all a very large body of low-grade ore. The Sunnyside vein is frozen 
to the walls, and gouge is usually absent. The ore minerals of the 
vein are galena, sphalerite, chalcopyrite, pyrite, tetrahedrite, and free 
gold, in a gangue of quartz and rhodonite. The ore streaks occur 
irregularly in the vein, between partitions of rhodonite. Asa rule 
the ore occurs near the walls, and when an ore shoot pinches on one 
wall it usually thickens on the other. The best ore, carrying free 
gold, occurs in irregular lenses parallel with the plane of the lode and 
sometimes 30 or 40 feet in diameter. It is usually associated with 
rosin-colored sphalerite and small amounts of lilac fluorite. These 
are regarded as useful indications, but are not invariably accompa- 
nied by free gold. The ore has been breceiated to some extent since 
its original deposition ami is sometimes traversed by a network of 
veinlets. These are usually tilled with quartz carrying a little chal- 
copyrite. But where the veinlets traverse rhodonite they are often 
filled with that mineral instead of quartz. The exact relation of the 
rhodonite "partitions" to the ore is not always clear. In some cases 
the rhodonite appears to form the id;is> of the vein, in which the ore 
occurs as lenticular bodies, and somei Lines lenses of rhodonite are sur- 
rounded by ore. The large masses of rhodonite, or "pink," as the 
miners term it, are never regarded as ore, although they are not des- 
titute of the ore minerals. The material is rose-pink in. color on fresh 
fracture, very compact, and exceedingly tough to work. It alwa} 7 s 
contains a little quartz, calcite, and rhodochrosite. The rhodonite 
sometimes occurs as distinct stringers cutting the quartz and ore, 
while in other places it may be seen intimately and irregularly inter- 
crystallized witli them. As far as observed, neither the rhodonite nor 
the ore shows any regular megascopic structure, such as banding, 
crustitication, or comb structure, other than the general relationship 
already indicated. 
The No Name lode has not yet been commercially worked. Where 
seen it showed about G feet of quartz and ore on the foot wall and 
about 4 feet on the hanging wall, the two streaks being separated by 
10 feet of rhodonite (fig. 7, p. 88). The ore is chiefly galena. 
The Sunnyside is worked through a main adit tunnel about 100 feet 
above the lake. There are two other important levels above the pres- 
ent adit. Underhand stoping is employed, resulting in empty stopes 
of great height. Fortunately the nature of the country rock is such 
that the men working in the bottoms of these stopes are fairly safe 
from falling material. There are no stopes as yet below the main adit 
Bull. 182 01 12 
