Page 172 - 1915, Springs of CA.

156 SPRINGS OF CALIFORNIA.
The springs issue from slopes composed of tuff and rhyolitic lava.
The following analyses show that the water of the two drinking
springs is secondary alkaline in character and contains a relatively
large proportion of magnesium and iron.
Analyses of water from Jacksons Napa Soda Springs, Napa County, Col.
[Constituents are in parts per million.]
1 2 3

20° 0. (68° F.) 20° C. (68° F.) 19° C. (67° F.)
Properties of reaction:
14 11 s
0 0 0
0 0 0
16 14 24
70 75 68
316 14 206
Reacting By Reacting By Reacting
Constituents. w ?gyM values. weight. values. weight. values.
Sodium (Na). . ............................ 126 5.4S 107 4.65 143 6.22
Trace. Trace. Trace. Trace.
Lithium (Li) ............................. Trace. Trace.
Calcium (Ca). ............................. 69 3.44 74 3.69 61 3.04
116 9.54 129 10.58 124 10.22
65 2.33 65 2.33 67 2.40
5.2 .58 5.4 .60 6.7 .74
Sulphate (SO<). . .......................... 19 .40 22 .46 8.8 .18
Chloride(Cl). ............................. 74 2.09 54 1.52 49 1.38
Carbonate (CO3) .......................... .549 18.30 578 19.27 608 20.28
Metaborate (BO2). ........................ Trace. Trace.
Silica(SiO2).... . ......................... 13 .43 11 .36 14 .46
1,036.2 1,045.4 1,081.5
Carbon dioxide (CO2) .................... 1,220 55. 60 815 37. 10
1. Pagoda Spring. Analyst and authority, Winslow Anderson (1888).
2. Pagoda Spring. Analyst, Lanzwurt (1870). Authority, U. S. Geol. Survey Bull. 32.
3. Lemon Spring. Analyst and authority, Winslow Anderson (1889).
CONGRESS SPRING (NAPA 14).
. Congress Spring is situated at the base of a low hill of tuff, about
31 miles southwest of Napa. It yields about one-half gallon a
minute of carbonated saline water, and a considerable amount of
alkaline material forms 011 the surface near by. The spring has been
protected by a board curbing, and a small amount of the water has
been sold locally, but it has been of little importance as a marketed
water.
.ETNA SPRINGS (NAPA 2).
Near the head of Pope Valley, about 20 miles in a direct line
northwest of Jacksons Napa Soda Springs, a large resort has been
built up at yEtna Springs (Lidell post office).
The property, which borders Pope Creek, formerly belonged to
the yEtna Quicksilver Mining Co., and the locality once produced
much of the metal. After mining was discontinued in one of the
tunnels the water in it was observed to be mineralized, and as early