Page 219 - 1915, Springs of CA.

CAEBONATED SPEINGS. 201
61° in temperature, which deposits considerable iron. Its water has
been used for drinking and has also been piped to a swimming plunge.
The Soda-magnesia Spring is about 100 yards southeast of Aperient
Spring at the base of a steep slope. It yields perhaps 3 gallons a
minute of cool, mildly carbonated water that is piped to large storage
tanks near by and thence to the grounds. Like the water of Aperient
Spring, it deposits considerable iron along its overflow channel.
The analyses on page 200 show that Soda-magnesia Spring con-
tains a considerably larger proportion of magnesium than the water
of the Main Spring and is essentially secondary alkaline in character.
The Gas Spring is about three-fourths of a mile by trail northeast
of the Main Spring and is across a divide on slopes that drain to
North Fork of Cache Creek. The spring consists of a shallow pool 1
to 3 feet wide and about 10 feet long, partly beneath a small bank on
the canyon side. There is only a seeping overflow in summer, but
the pool is kept in vigorous ebullition by large bubbles of carbon
dioxide tha.t continually escape. The amount of this gas is so great
that it extinguished a lighted newspaper held 8 inches above the
surface of the pool.
The Main Spring at Bartlett Springs apparently issues from altered
sandstone, but serpentine is exposed a few yards to the north.
Aperient Spring also issues from altered sediments, but serpentine
outcrops a few yards north and west of it. The steep slope back of
the Soda-magnesia Spring is formed by a ledge of hard, altered sand-
stone. Shale forms the slopes near the Gas Spring, but there is a
small exposure of decayed serpentine a few yards east of it. All of
this region appears to be composed of the altered sediments and
associated serpentine that are a characteristic rock formation in
Lake County.
HOPPINS SPRINGS (LAKE 10).
The property of Hoppins Springs, which joins the eastern boundary
of that of Bartlett Springs, has been improved to some extent as a
resort by the erection of several cottages for light housekeeping.
Two small springs that issue on the property, about 100 and 150
yards east of the Bartlett Soda-magnesia Spring, are known respec-
tively as the Magnesia Spring and the Iron Spring. Each forms a
drinking pool that has been protected by a board cover and contains
cool, carbonated water. That of the Iron Spring is the more strongly
carbonated, and that of the Magnesia Spring has a more pronounced
taste of iron or magnesia.
Serpentine is exposed at the roadside a short distance south of the
springs, but like Bartlett Springs the mineral water apparently
issues from altered sandstone.