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Shiromaru mine (Hakumaru mine), Okutama-cho, Nishi-Tama-gun, Tokyo Metropolis, Kanto Region, Honshu Island, Japan

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Latitude & Longitude (WGS84): 35° 48' 37'' North , 139° 7' 25'' East
Latitude & Longitude (decimal): 35.81028,139.12350
Köppen climate type:Cfa : Humid subtropical climate


Low-grade manganese ore in metamorphosed sediments. Outcrops are now under the waters of a reservoir. ("Hakumaru" is a misnomer for this locality.)


Mineral List


38 valid minerals. 2 (TL) - type locality of valid minerals.

Rock Types Recorded

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Alphabetical List Tree Diagram

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

Permian - Carboniferous
252.17 - 358.9 Ma



ID: 1376984
Carboniferous-Permian sedimentary rocks

Age: Paleozoic (252.17 - 358.9 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

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Matsubara, S., Miyawaki, R., Yokoyama, K., Shimizu, M., & Imai, H. (2004). Tokyoite, Ba2Mn3+ (VO4) 2 (OH), a new mineral from the Shiromaru mine, Okutama, Tokyo, Japan. Journal of Mineralogical and Petrological Sciences, 99(6), 363-367.

Mineral and/or Locality  
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