Page 99 - 1915, Springs of CA.

HOT SPRINGS. 93
The buildings are about one-fourth mile from the hot springs, on a
ridge that commands a good view of the valley of Putah Creek and
the mountains eastward.

GORDON HOT SPRING (LAKE 46).
Gordon Hot Spring rises on the eastern side of Cobb Valley Creek,
near the head of a small meadow. A number of years ago this spring
was used to some extent for bathing, but in 1909 the small bathhouse
had been removed and the spring was unused. It yielded about five
gallons a minute of water at a temperature of 92°. The water has a
slightly oily taste, like that at Skaggs Hot Springs. (See p. 81.)
The following is an early analysis of the water:
Analysis of water from Gordon Hot Spring, Lake County, Cal.
[Analyst and authority, Winslow Anderson (1888). Constituents are in parts per million.]

38° C. (100° F.)
Properties of reaction:
38
32
0
0
30
5
By Reacting
Constituents.
weight. values.
211 9.18
7.0 .18
195 9.72
68 5.60
32 3.57
532 11.08
Chloride (Cl) ........................................................................ 216 6.08
Carbonate (CO8) .................................................................... 226 7.52
Silica (SiO2).. ....................................................................... 39 1.29
1,526.0
Excess.
The analysis indicates a primary and secondary saline water in
which secondary alkalinity is prominent. Tertiary alkalinity is not
fully reported but is probably high. The large proportion of alu-
minum shown by the analysis is unusual for such a water and is
probably hi error.
The rocks of this locality are sediments that are overlain by lava
and by siliceous tuff in which opaline silica is common. A ledge of
quartzitic schist that contains considerable amounts of albite and
chlorite is exposed 50 yards northeast of the spring.
HARBIN SPRINGS (LAKE 56).
Harbin Springs (PL VI, B} are in southern Lake County, about
3J miles north of Middletown. Three springs, known as the Arsenic,
Iron, and Sulphur springs, rise close together in a ravine on the western