宮中島の湯
Miyanakashima-no-yu塩
Chloride
+ Bicarbonate
Sodium Chloride-Bicarbonate spring
Hot source · 47°CHigh silica
Composition fingerprint1.0 g/kg dissolved · Hypotonic
Na⁺93
Cl⁻58
HCO₃⁻39
◀ CationsAnions ▶
- Sodium Na⁺
- salt's cation — pairs with chloride to make the water salty.
- Chloride Cl⁻
- table-salt anion — coats the skin and holds heat in.
Known good for
- Warmingcold sensitivity
- Aches & jointsstiff shoulders
- Smooth skindry, rough skin
A sodium-led chloride-bicarbonate hot spring (46.9 °C at the wellhead). Weakly alkaline and soft on the skin, it sits in the Japanese 'beauty-water' family, with the bicarbonate side adding a touch of soda-water smoothness to the salty chloride base. Metasilicic acid at 78.8 mg/kg leaves the kind of thin silica film that makes skin feel noticeably softer afterwards.
Sampled at mixing tank·Analyzed Oct 30, 2013·一般社団法人 新潟県環境分析センター·Cert no. 新潟県（登）環企第4号
