カゲバタ源泉・洞門源泉（混合）
Kagebata & Domon Springs (blended)Operated by · 蔵王温泉 源七露天の湯
Mixed source
酸
Acidic
+ 含鉄(Ⅱ)泉 · Sulfate · Chloride
Hot source · 45°CUltra-acidicIron-richHigh silica
Known good for
- Skin conditionsatopic skin, eczema
- Circulationtired legs
- Aches & jointsstiff shoulders
- Sensitive-skin cautionbroken or dry skin
A strongly acidic spring at pH 1.7 — sharp enough to prickle on the skin — classified as an acidic, iron(II)-bearing aluminium-sulfate-chloride hot spring. Iron at 30 mg/kg is high enough to oxidize reddish-brown on contact with air, and 3,439 mg/kg of dissolved solids give the water real body, with sulfate adding quiet weight and chloride a salty edge. Metasilicic acid runs to 208.8 mg/kg, leaving the kind of thin silica film that makes skin feel noticeably smoother afterwards. The posted analysis was sampled in the open-air bath itself rather than at a wellhead, and the bath is fed by two blended wells, Kagebata and Domon.
Sampled at bath inlet·Analyzed Nov 20, 2023·日本環境科学株式会社