The Paektu hot spring is one of the geological sites in the Mt Paektu area registered as a global geopark.
The hot spring is a volcanic spa of sodium bicarbonate water heated by volcanic gas gushing out from under the volcanic body of Mt Paektu.
It was discovered on the shore of Lake Chon on January 21, 1984.
The area of the hot spring, about 930 metres long and 10-15 metres wide, stretches like a strip along the shore of the lake.
The total mineral content of the hot spring is 2.3 g/L, free carbon dioxide 382.80 mg/L, and metasilicic acid 294.68 mg/L.
The major ionic components are sodium ion and bicarbonate ion, with a small amount of sulphate ion and chlorine ion.
The spring is free from hydrogen sulfide.
A lot of white sediments are found on the stones in the hot spring, and it is because its water is rich in sodium bicarbonate.
With a pH of 7.4, the water temperature is 53 °C on average and around 73 °C to the maximum at the outlets.
Pak Hyon Uk
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