炭酸泉源
Tansan Springhead炭
Carbonated
+ Iron-bearing · 単純冷鉱泉
- Color
- colorless and transparent
- Taste
- faintly sour with a metallic edge
- Odor
- odorless
Calcium-Iron (II) Sulfate spring
pH 4.3Weakly acidicCold mineral source · 19°CCO₂-richIron-richCold mineral
Composition fingerprint0.4 g/kg dissolved · Hypotonic
Ca²⁺35
Fe²⁺32
Na⁺17
SO₄²⁻88
◀ CationsAnions ▶
- Calcium Ca²⁺
- settling and calming; can leave a white mineral bloom.
- Sulfate SO₄²⁻
- "gypsum / Glauber's salt" — vessels and wound healing.
Known good for
- Circulationtired legs
- Recoveryfatigue, stress
A carbonated, iron-bearing simple cold-mineral spring. With 1,010 mg/kg of free CO2 it counts as a rare carbonated source, and fine bubbles cling to the skin on entry. Iron runs high at about 40 mg/kg, so the water oxidizes reddish-brown on contact with air. It is weakly acidic, faintly tangy on the skin, and as a cold-mineral source below 25 °C it is heated before bathing.
Sampled at wellhead·Analyzed Sep 25, 2019·公益財団法人 中央温泉研究所·Cert no. 甲第3738号