smith.] GOLD MINING IN CENTRAL WASHINGTON. 79 
as the Warrior General mine. This mine in its geologic relations and 
vein conditions is typical of the mines of the district. The country 
rock is the altered peridotite or serpentine, probably of Mesozoic age, 
which exhibits the usual variations in color and structure. The War- 
rior General and the other mines are located in a zone of sheared 
serpentine, where the mineral-bearing solutions have found conditions 
favorable for ore deposition. This mineral zone has a general east- 
west course, and extends from east of Blewett across thePeshastin, up 
Culver Gulch, and across to the valley of Negro Creek. 
The Warrior General vein has a trend of N. 70° -80° E., and is very 
irregular in its width. In the walls the serpentine is often talc-like 
in appearance, while the compact white quartz of the vein is some- 
times banded with green talcose material. Sulphides are present in 
the ore, but are not all prominent. The values are mostly in free 
gold, which is fine, although in some of the richer quartz the flakes 
may be detected with the unaided eye. 
The workings in this mine consist of a number of tunnels driven at 
different levels into the north wall of Culver Gulch. These follow the 
vein for different distances, the vertical distance between the lowest 
tunnel, No. 0, and the highest opening of importance, No. 5, being 
about 650 feet, and connections have been made between most of the 
levels. The vein is approximately vertical, although it has minor 
irregularities. The quartz is 7 to 8 feet in width in some places, but 
shows pinches in others. In the upper tunnel, No. 5, the ore appears 
to be broken, quartz of the same character as that in the lower tunnels 
occurring here much more irregularly, although the richest ore has 
been taken from the upper workings. Some very rich ore bodies have 
been mined, but they are small and their connections have not been 
traced. The most extensive work has been done from the lowest 
tunnel, and the latest work here shows that the serpentine, which is 
so much broken in many parts of this mineralized belt, is here more 
solid, a remarkably well-defined and regular wall having been followed 
for over 300 feet. 
Other properties in the same zone as the Warrior General are the 
Polepick, Peshastin, Fraction, Tiptop, Olden, and Lucky Queen. 
These have all produced ore which has been worked in the Blewett 
mill. 
Siuavk district. — The gold-quartz veins of the Swauk are quite dif- 
ferent from those in the vicinity of Blewett. They are in part narrow 
fissure veins of quartz with some calcite and talcose material, the wall 
x)ck being the sandstone or shale of the Swauk formation, of Eocene 
ige, or in some cases a diabase or basalt dike may form one wall. 
Quartz stringers running off from the vein are common, and at one 
ocality thin bands of quartz follow the bedding planes of the sand- 
stone. A peculiar type of vein material is locally termed " bird's-eye " 
luartz. This occurs in several mines, and may be described as a 
