Page 231 - 1915, Springs of CA.

CARBONATED SPEINGS. 213
blue appearance of the mountains to the southwest. The water was
formerly bottled for table use, but it has not been on the market
since about 1890. The property has, however, been improved as a
picnic resort.
The spring rises in a small concrete house, from a crevice in dark-
colored sandstone. Water also issues beside the spring house, ap-
parently from the same crevice as that within the house, and the com-
bined flow of the two streams is perhaps a quarter of a gallon a minute.
The water is strongly carbonated and also tastes slightly of hydrogen
sulphide. A very small deposit of Epsom salt was noticed beside
the spring, and the channel is iron stained for a few yards below it.
There are small deposits of lime carbonate farther downstream.
Although the spring issues from sandstone, serpentine that ap-
pears to form a dike not much more than 10 yards thick is exposed
on the slope immediately above it. This dike may determine the
position of the spring at this point, and the considerable amount of
magnesia in the water that is shown by the following analyses,
tabulated with one from Congress Springs, is probably explained by
the presence of the serpentine. The water may be classed as sec-
ondary alkaline and primary saline, but the unusually large content
of magnesium is noteworthy.

Analyses of ivater from Azule Mineral Spring and Congress Springs, Santa Clara
County, Cal.
[Constituents are in parts per million.]

] S,

16° C . (60° F.) 10° C. (50° F.)
Properties of reaction:
39 42 43
0 0 0
0 0 0
Primary alkalinity ................... 13 11 36
48 47 21
140 1C6 42
By Reacting By Reacting By Reacting
Constituents. weight. values. weight. values. weight. values.
Sodium (Na)... . .......................... 972 42.25 990 43.03 1,746 75.90
126 3.21 117 2.86 20 .51
CalHnm (C^) 69 3.44 62 3.08 181 9.05
462 38.02 462 37.99 144 11.87
115 4.10
41 4.52
Sulphate (SO4).... ........................ 378 7.87
Chloride (Cl) .............................. 1,212 34.17 1.280 36.10 1,201 33.89-
1,582 52.75 1,526 50.86 1,790 59.67
Silica (Si02)... ............................ 55 1.82 68 2.26
4,478 4,437 5,684
Carbon dioxide (CO2) ..................... 2,632 119.64 2,606 118.46 756 34.36
1. Azule Mineral Spring. Analyst and authority, Winslow Anderson (1888).
2. Azule Mineral Spring (bottled water). Analyst. James Howden. Authority. U. S. Geol. Survey
Bull. 32.
3. Upper spring, Congress Springs. Analyst and authority, Winslow Anderson (1888).