Yamabuki Creek
Higashimachi-Naka, Shimo-Suwa city, Suwa county, Nagano pref., Japan
Occurrence
Greenschist facies metamorphic rocks
Small hematite deposit associated with greenschist of Shimosuwa Metamorphic Rocks. There are 2 interpretations of Shimosuwa Metamorphic Rocks: Metamorphic rocks of Moriya Formation subjected to deformation by faults and contact metamorphism by Hachibuse Quartz Diorite, or a part of metamorphic rocks of Sanbagawa Metamorphic Rocks. Hachibuse Quartz Diorite is approximately 200 m apart from this location.
An adit mined for hematite ore during World War II. Hematite is concentrated in greenschist. The adit wall is greenschist of Sambagawa Metamorphic Rocks.
Reported Minerals
- Hematite
Mineral Assemblages
- Green schist(Host) - Hematite
History
- 1965: Hematite was mined as iron ore.
Localities
- Kami-Nagatoro (Stilpnomelane, High-P)
- Banjo (Glaucophane, High-P)
- Yamabuki creek (Hematite, High-P)
- Yoshimi (Zeolite, High-P)
- Kami-Suwa (Chloritoid, Middle-P)
- Takarayama Mine (Quartz, Middle-P)
Related Occurrences
- Albite-Epidote-hornfels facies
- Hornblende-hornfels facies
- Pyroxene-hornfels facies
- Sanidinite-hornfels facies
- Pumpellyite-Actinolite facies
- Blueschist facies
- Epidote-Amphibolite facies
- Eclogite facies
- Ultrahigh-pressure faices