TrekGEO > Mineral Trail > Tohoku region > Aomori pref. > Nakadomari

Japanese page

Nakadomari

Nakadomari city, Kita-Tsugaru county, Aomori pref., Japan

Occurrence

High-temperature zeolite facies metamorphic rocks

Zeolites in vesicules of basalt lava of middle Miocene (15.5 - 15.0 Ma) Nagane Formation. Margins of each basalt lava flow are composed of hyaloclastite and pillow lava, which suggests eruption under submarine circumstance.

Nakadomari

Outcrop of basaltic pillow lava of Nagane Formation. The dark green host is a part of basaltic pillow lava, and small holes are visicules. The bluish-white crystal at the center of the photograph is apophyllite. Zeolites are in both visicules and cracks.

Reported Minerals

Mineral Assemblages

  • Analcime
  • Apophyllite - Phillipsite-Ca - Okenite
Copyright (c) 2021 NariNari, All Rights Reserved.