2022 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)

Presentation information

Poster presentation

R7: Petrology, Mineralogy and Economic geology (Joint Session with Society of Resource Geology)

Sat. Sep 17, 2022 9:30 AM - 5:30 PM B256 (Adv. Edu. Res. Bldg. B-2F)

9:30 AM - 5:30 PM

[R7P-05] Silver, lead, zinc, manganese mineralization at the Shirakomori deposit, Akita Prefecture, Japan

*Shoma Yamada1, yasushi Watanabe1 (1. Akita Univ. Int)

Keywords:rhodochrosite, hydrothermal deposit, granodiorite

There are many hydrothermal metal deposits in the Taiheizan area located in the central part of Akita Prefecture. The Shirakomori deposit is a vein-type deposit of silver, lead, zinc, and manganese, and is hosted in the Taheiyama granitoids of Cretaceous age.
The objective of this study is to elucidate the formation process of the deposit.
Based on naked eye and microscopic observations, three phases of formation of the deposit were recognized.
The K-Ar dating of sericite associated with the vein is 3.43Ma, indicating that the deposit was formed in the Pliocene age.