黒川温泉(ふじ屋源泉)
Kurokawa Onsen (Fujiya Spring)Operated by · 有限会社 富士屋
Sodium Sulfate-Chloride spring
An ultra-acidic, iron-bearing simple thermal spring of the sulfate sub-type — pH 2.8 sharp enough to sting slightly on contact, with a strong astringent bite and an unmistakable metallic iron note. Total iron of 48 mg/kg oxidizes to reddish-brown on air contact, and 150 mg/kg of metasilicic acid leaves a thin silica film for noticeably smoother skin. Emerges from the well at a hot 56 C.
- Color
- colorless and clear
- Taste
- strongly astringent
- Odor
- moderate metallic iron odor
- Ultra-acidic
- Iron-rich
- High silica
Analyzed Oct 18, 2016·株式会社 同仁グローカル·Cert no. 第K16104240号