TrekGEO > Mineral Trail > Occurrence > Vitriolic sinter

Japanese page

Vitriolic sinter

Chemical Process (Liquid-phase growth) - Ground surface

Required Geological Setting

Island arc volcanoes


A kind of hot spring sinters composed of sulfate minerals deposited from hot spring water. Sulfate ions dissolved in hot spring water deposits as baryte or gypsum by water temperature lowering or pH increasing. Baryte can deposit stably in the pH range between 1.0-3.0. Baryte may cotain Pb and few Ra, and called as Hokutolite, a variety name of baryte.

Reported Minerals

  • Baryte
  • Gypsum


  • Tamagawa Hot Spring (Hokutolite)
  • Kawarage (Pb bearing)

Related Occurrences

Copyright (c) 2015 NariNari, All Rights Reserved.