ransomb.] MINES OF CEMENT CREEK. 257 
tliis tunnel, but the ore could not be made to pay and the attempt 
was abandoned. The workings are no longer accessible and the lode 
was not seen. The Red and Bonita mill is equipped with Gates 
crusher, 2 sets of rolls, jigs, 10 stamps, and 4 Frue vanners. 
Queen Anne mine. — This is near the mouth of Ross Basin, on a lode 
which here consists of two or more parallel veins close together. The 
one worked in the Queen Anne strikes N. 50° E. and dips northwest at 
85°. It consists of solid banded quartz and bismuthiferous galena ore 
up to 2 feet wide, " frozen" to the walls. Toward the southwest the 
vein pinches and carries a little gouge. It could not be traced on the 
surface beyond a large northwest-southeast lode which passes up into 
Ross Basin. 
Columbia m ine. — This, one of the oldest mines of the quadrangle, 
lies just northeast of the Queen Anne and is apparently on the same 
lode. It has been an intermittent producer of argentiferous galena 
ore on a small scale 
Ross Basin lodes. — There is at present no mine in operation in 
Ross Basin, and none of the developments have thus far passed beyond 
the prospecting stage, but the basin is traversed by several lodes of 
unusual size with well-exposed croppings. The most prominent one 
has a nearly northwest courseand dips southwest at S0 C . It outcrops 
boldly along the northeast side of the basin, especially near the head 
ot the latter, where it passes over the ridge into Snnnyside Basin and 
is apparently the same as the George Washington lode. Toward the 
northwest it continues probably into Gre}^ Copper Gulch. Some ore, 
resembling in mi neralogical character thai found in Snnnyside Basin, 
but apparently in irregular bunches, occurs in this huge lode, which 
is often over 50 feet wide. Several other lodes with nearly northeast 
courses come into the main lode from the southwest, but can not as a 
rule be traced on the surface to the northeast. The lodes shown on 
the map are only a few of those which traverse the floor of the basin 
in various directions, although most of them have a northeast trend. 
They are not all of great length, for one vein often stops short at the 
junction with a second vein of different course. In one case two well- 
exposed, strong quartz veins, one striking southwest and the other S. 
80° W.,come together in a massive cropping of quartz, beyond which 
there is no surlicial sign of the continuation of either lode. Distinct 
evidence of one lode faulting another could not be obtained. They 
are apparently all of substantially the same age. The fissure fillings 
are usually solid white quartz with a little rhodonite and bunches of 
low-grade ore. In some cases the lodes contain numerous fragments 
of altered mineralized country rock. 
Henrietta mine. — This property, in Prospect Gulch, is on a lode 
striking S. 40° W. and dipping northwest at 65°. Three tunnels on 
the south side of the gulch give access to the workings, while a fourth 
tunnel, destined to be the future main adit, is being driven to the 
Bull. 182—01 17 
