温泉神社硫黄泉・からすの湯1号泉・からすの湯2号泉・下地獄5号泉・下地獄9号泉・下地獄16号泉 混合泉
Onsen-jinja Iou-sen / Karasu-no-yu #1 & #2 / Shimo-jigoku #5, #9, #16 Mixed SpringMixed source
酸
Acidic
+ 含硫黄泉 · Iron-bearing
Sodium Sulfate spring
Hot source · 44°CUltra-acidicIron-richHigh silica
Composition fingerprint1.2 g/kg dissolved · Hypotonic
Na⁺45
Ca²⁺15
SO₄²⁻79
Cl⁻19
◀ CationsAnions ▶
- Sodium Na⁺
- salt's cation — pairs with chloride to make the water salty.
- Sulfate SO₄²⁻
- "gypsum / Glauber's salt" — vessels and wound healing.
Known good for
- Skin conditionsatopic skin, eczema
- Circulationtired legs
- Aches & jointsstiff shoulders
- Sensitive-skin cautionbroken or dry skin
A blended source pooling six wells from the Naruko district — the Onsen-jinja sulfur spring together with the Karasu-no-yu and Shimo-jigoku families. The water is strongly acidic at pH 2.5, sharp enough to prickle the skin and eyes, layered with the unmistakable sulfur note of H₂S and the metallic edge of iron(II) that lends a faint amber cast. At 181.8 mg/kg of metasilicic acid, the silica film softens the bite slightly, but the temperament stays in the family that Naruko is renowned for: long documented relief for stubborn skin conditions.
Sampled at mixing tank·Analyzed Jul 9, 2020·公益財団法人 宮城県公害衛生検査センター·Cert no. 第1196号
