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Taishu mine, Azu, Tsushima-Shimoshima island, Tsushima Islands, Nagasaki Prefecture, Kyushu Region, Japan

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Latitude & Longitude (WGS84): 34° 13' 14'' North , 129° 13' 9'' East
Latitude & Longitude (decimal): 34.22083,129.21944
Köppen climate type:Cfa : Humid subtropical climate


Originally mined for silver - Japan's first recorded silver production was from here in 699 A.D. Later a Pb-Zn-Ag mine. (1958 production = 13.0 tons Ag.) Hydrothermal veins in fissures in highly altered Miocene quartz porphyry, and disseminated in surrounding country rock. Metal mining has now ceased, but the surrounding altered country rock is mined for high-quality clay for porcelain and refractories. (The "kaolin" here is actually halloysite.) Remaining sulphides are detrimental to the clay ore and must be removed.


Mineral List


13 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Paleogene
23.03 - 66 Ma



ID: 1378429
Paleogene sedimentary rocks

Age: Paleogene (23.03 - 66 Ma)

Lithology: Sedimentary rocks

Reference: Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d. [18]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
- Geology and Mineral Resources of Japan, Geological Survey of Japan (1960), pp 174, 175, 180, 182, 220, 227, 229.
- Masaharu Nakagawa (2002): Clay minerals in Taishu Toseki and Taishu Hokudo. Nendo Kagaku 41, #3.
- Kamitani, M., Okumura, K., Teraoka, Y., Miyano, S., and Watanabe, Y. (2007): Mineral Resources Map of East Asia. Geological Survey of Japan.

Mineral and/or Locality  
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