127

No. 2 locality, Mission spring, about 6 miles south of the forks of Salt river: taken
August 26, 1916,
Contains in 1,000 parts by weight.

Ions . Hypothetical combination
Potassium. . Aree aa he SHEER 0°4 Potassium chloride . Boece 0°8
So@iwmr "ie oe ae ee LO0SS*s “Sodium: chlorides. (9.2 ee 25:6°3
AC OMCHINA Ss ey eee Se oes ena 1-2 Calcium: Sulpnatecs 9.2 se aoe ore 4°2
Magnesium. er ear aeers Si Gears 0°2 Sodium sulphate.. 022
Chtorine.. . Seinen s 156°6 Magnesium chloride.. 0°8
Sulphuric. Bed (804). 3°1 :
262°3 262°3
Temperature Gl aw On COMeeliOn =-— 6 oe oe ce ete ee ee) LU ee
TenwicesbuLe OL PLING gs 6s seo a eae ee ee) ey eee ae ee eee core
SOS Silken een aN eS eS a ee ohne a eo OU ate gt 1°204

Flow about 3 gallons per minute.

No. 3 locality, Snake Mountain sprinas, about 2 miles east of Mission spring: taken
August 29, 1916.

Contains in 1,000 parts by weight.

Ions Hypothetical combination
Potassium... Tue ee Rh tee Wages oe ae 0°4 Potassium chloride. . SOE: 0°8
Sodinmis A AS ferret tose eee. 1100 fies + SOdiumHchlonidies 5.3 ase ae See 2'56°0
PTH Veh bo a eee ge ee eee eg era 1232 Caleimm sulphate cisca © sees ee 4°2
Wa ONES TUN tet ee Pe ete Pier 0°2 Sodium sulphate... 0° 2
Chlorine... VERS PES 156°4 Magnesium chloride. . 0°s

Seipnniic acid "($O.). x Ook

26:2°0 2'62°0

Temperature of air on collection.. .. .. aS pn Bet Aas Lise ejd abe

Mamperature Of brine. eis. oo te ey a es See

Specific gravity at 65°F . seh ees py STE RM Me Feed Mere Lucas nS Oe ats 1°2102

Flow about 4 to 5 eillons per mince.

In recalculating these analyses we find that sodium chloride constitutes in
each sample over 97-6 per cent of the total solids. The percentage of dissolved
matter in the brine, namely over 26 per cent, indicates practically a saturated
sohation of salt at that temperature.

The salt is probably derived from crystals of salt disseminated through
the gypsum that is found in abundance in the escarpment. Its presence in at
least some of the gypsum is shown by an efflorescence of common salt that appears
on some specimens when exposed to the atmosphere. Salt-bearing gypsum of
this nature occurs at Snake Mountain springs.

At La Saline, on Athabaska river, 28 miles below the mouth of the Clear-
water, there are several mineral springs about half a mile east of the river on
the edge of the valley. The deposits, which consist principally of caleareous
tufa carrying a small amount of common salt, gypsum, and native sulphur,
cover the face of the escarpment and have built up a cone 10 to 15 feet high and
about 200 feet wide. Sulphuretted hydrogen gas escapes from the bank in several
places. The water from the springs flows into a shallow lake, which is situated
at the foot of the escarpment, and is surrounded by a clay flat partly. bare and

15850—10