KAWICH RANGE, ECONOMIC GEOLOGY. 
and connected by cross veins are transitional between the two forms 
along the strike. The quartz, much of it crustified, is white and more 
or less iron stained. Finely divided sulphides impart a blue tinge to 
some of the quartz, and the parallel position in thin bands of the 
white and blue quartz shows clearly the contemporaneous origin of 
the quartz and sulphides. Vugs, usually elongated, parallel to the 
walls of the veins, are characteristic. Colorless quartz crystal 
common in these vugs, while botryoidal quartz Avails are less common. 
The vein in some portions is composed of clusters of quartz plates 
an inch in length set at right angles to the vein walls. These suggesi 
that the quartz in parts is a replacement of calcite. The normal 
crystalline quartz grades into a compact white flinty variety, which 
is said to be a good carrier of gold. Under the microscope this 
appears as a cryptocrystalline mosaic of quartz with a little sericite. 
This central zone is a silver bearer, the gold values being one-tenth 
those of silver. As silver ores, ruby, and native silver are reported 
intimately associated, secondary silver chloride in knobs and wire- 
like masses is widely distributed in the vugs, and the silicified rhyo- 
lite itself carries values. Iron sulphide was noted in a few small 
specks in quartz vein. 
The upper zone of mineralization is said to be very similar to the 
central zone. The lower zone is also similar to the central, although 
there is perhaps less parallelism and constancy of the quartz veins. 
The strike is more northerly. Pyrite locally impregnates the rhyo- 
lite. The flinty quartz already mentioned is abundant in this ledge, 
and the values are largely gold. The resemblance of the Eden de- 
posits to those of Silverbow is striking, and the genesis was doubtless 
similar and contemporaneous. 
Water and fuel are abundant. Tonopah, the supply depot, is TO 
miles distant. 
KAWICH. 
Kawich, in the Gold Reed mining district, lies in a detrital embay- 
ment on the east side of the Kawich Range. The town is 54 miles 
south of east of Goldfield. The first locations were made in Decem- 
ber, 1004, and early in the spring of 1905 several hundred men rushed 
to the camp. When visited (August 4, 1005) 10 miners were at work. 
Two shafts have been sunk 150 feet and several thousand feet of 
drifts have been driven. The mines are situated on a gently sloping 
arca of wash, from which protrude numerous small rugged knobs of 
monzonite porphyry and smooth domes of rhyolite. The monzonite 
porphyry has so far been the ore bearer. 
The first locations were made on the property of the Gold Reed 
[Mining Company. Here a rugged outcrop of intensely silicified mon- 
zonite porphyry, dark brown on weathered surfaces, contains in tin 
'limonite-stained casts of its many phenocrysts plates of hackly go 
