Page 176 - 1915, Springs of CA.

160 SPRINGS OF CALIFORNIA.

Four of the six mineral springs on this property rise close together,
in cement basins near the bank of a small cascading stream, and a
fifth spring issues at the opposite edge of the stream. These springs
range in flow from about 1| to 6 gallons a minute. The sixth spring,
which is small and relatively unimportant, issues at the side of a
ravine 250 yards northward. Small amounts of iron are deposited
along all the overflow channels. The water of all the springs is
carbonated and has a slightly sweet taste that is probably due to
magnesium. The following analysis of water from one of the four
main springs shows it to be similar in character to that of one of the
Walters springs with which it is tabulated, but it is not so strongly
mineralized.
Analyses of water from Samuel Soda Springs and Walters Mineral Springs, Napa
County, Col.
[Constituents are in parts per million.]
1L i i

14° 0. (58° F.)
Properties of reaction:
/ 27 22
0 0
0 0
12 15
61 63
425 400
By Reacting By Reacting
Constituents.
weight. values. weight. values.
Sodium (Na).. . ................................................ 219 9.52 288 12.52
23 .59 2.5 .06
Lithium (Li)... . ............................................... Trace. Trace. Trace. Trace.
.7 .01
Trace. Trace. Trace. Trace.
14 .70 50 2.49
186 15.29 232 19.08
Iron (Fe)............................................. ......... 7.9 .28 5.5 .20
.1
Sulphate (SO<). ................................................ 31 .65
Chloride (Cl) ................................................... 222 6.26 262 7.39
578 19.28 807 26.88
Trace.
6.1 .19 2.7 .09
Silica (SiO2).. .................................................. 82 2.72 114 3.78
1,369 1, 764. 5
Carbon dioxide (CO2). ......................................... 2,370 107.80 2,920 13-'. 70
1. Samuel Soda Springs; probably principal spring. Analyst, E. W. Hilgard. Authority, 12th Cal.
2. Walters Mineral Springs; probably lower sp ing. Analyst, G. E. Colby. Authority, advertising
matter.
The high content of magnesium is to be expected, for the springs
issue from serpentine in an area of altered sediments that form the
principal rocks of this region. There are quicksilver prospects in a
deep ravine a quarter of a mile to the southeast, but the deposition of
the cinnabar probably has no close association with the existence of
the mineral springs.