指渓源泉
Shikei Spring塩
Chloride
+ 含鉄
- Color
- colorless and clear, strongly briny taste, almost odorless, with gas effervescence and gas evolution
- Taste
- strongly briny
- Odor
- almost odorless
Sodium Chloride spring
pH 6.4NeutralHot source · 99°CStrong saltIron-rich
Composition fingerprint44.0 g/kg dissolved · Hypertonic
Na⁺77
Ca²⁺14
Cl⁻99
◀ 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
- Cutsminor wounds
The Shikei source of Arima Onsen — an iron-rich sodium chloride strong-salt spring. At 44 g/kg of dissolved solids it far exceeds ocean salinity, leaving a thick mineral film on the skin and ranking as a hypertonic water. It carries 67 mg/kg of iron and oxidizes reddish-brown on contact with air, which is the origin of the 'Kinsen' (golden spring) name: colorless at the wellhead, it turns tea-brown as it stands. At 98.6 °C it is among Japan's hottest natural sources, strongly salty and exceptionally heat-retaining.
Sampled at wellhead·Analyzed Jul 22, 2009·財団法人 中央温泉研究所·Cert no. 甲第3418号
