of Gold in Calaveras county, Cal. 95 
being washed out by the atmospheric waters, and have followed 
sulphate of iron, (Coquimbite) sulphate of copper, (Cyano- 
site) and alum. The water of the shaft contains copper 
enough to redden the iron tools. At Quail Hill considerable 
masses of heavy spar are found, formed probably from the 
action of soluble sulphates upon witherite. No gypsum was 
observed at either locality. 
The mineral species found at Whisky Hill, are as follows: 
pene Gold. 
etallic Copper. Tron ites. 
Metallic Silver. ‘Beige: 
R oquimbite 
Malachite (green carbonate of copper). Heavy Spar. 
Azurite (blue carbonate of co . Hematite (chiefly the earthy varieties). 
Socolla (silicate of copper). Kaolin. 
Cyanosite (blue vitriol). Lithomarge and various aluminous and 
opper Glance (Vitreous copper). magnesian silicates resulting from the 
Zine ecomposition of the chloritic and 
taleose rocks. 
an” list of species is about the same for the deposit at Quail 
The line of division between the ore-bearing ground in these 
great ore channels, and the country rock is quite distinctly 
Seen on both eastern and western outcrop at Quail Hill, and 
on the western at Whiskey Hill. At the former place it is 
a dark bluish porphyritie rock, probably metamorphic of a 
dim 
sandstone or siliceous sediment, The outcroppings resemble 
and carrying, at times, ores of copper, the commercial value 
which is, however, entirely pha to that of the precious 
fo 
San Francisco, April 16th, 1867, OY ae. ae Z 
