Page 292 - 1915, Springs of CA.

272 SPRINGS OF CALIFORNIA.

Analysis of water from Hillydale Sulphur Spring, Santa Clara County, Cal.
[Analyst, F. T. Green (1904). Authority, owner of spring. Constituents are in parts per million.]

Properties of reaction:
Primary salinity ................................................................ 57
Secondary salinity .............................................................. 0
Tertiary salinity. ............................................................... 0
6
37
Tertiary alkalinity .............................................................. 6
By Reacting
Constituents. weight. values.
95 4.12
Calcium (Ca)........................................................................ 32 1.60
9.5 .78
Iron (FeJ. ...........................................................................
} 1.0 .04
39 .81
Chloride (Cl).. ...................................................................... 104 2.93
83 2.76
&%Js»(8iOt).......... ............................................................... 11 .37
374.5
Present. Present.
The water is used locally for drinking and is considered useful
medicinally.
The spring is situated at the base of a basaltic slope, in an area
of sedimentary rocks that may belong to the Franciscan formation.
The rock near the spring contains much calcite and is stained with
metallic sulphides, from which the sulphide constituents of the water
are possibly derived.
HINNS SULPHUR SPRING (SANTA CRUZ 2).
About 4 miles south of Hillydale Sulphur Spring, across a mountain
divide, is a small spring known as Hinns Sulphur Spring. It has
been used to some extent for drinking, but has not been greatly
improved and has only local interest.
OLIVE SPRING (SANTA CRUZ 1).
Olive Spring is about 1 mile west of Hinns Sulphur Spring. Like
the latter it has been of only local importance, as it yields but a small
flow of moderately sulphureted water and is remote from well-
traveled roads.
Analyses of " Nicholas Springs," published by Anderson, are
probably of water from either Olive or Hinns springs. They show a
solid content of about 3,100 parts per million, with calcium, mag-
nesium, and sulphate as the prominent constituents.
SULPHUR SPRING ON BODFISH CREEK (SANTA CLARA 11).
Several mineralized springs issue along Bodfish Creek and its
tributaries west of Gilroy. Not all of these springs are sulphureted,
but as hydrogen sulphide is the most prominent constituent of some
of them, the group is described among the sulphur springs.