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Otome mine (Mitake mine), Kofu City, Kinpuzan district, Yamanashi prefecture, Chubu region, Honshu Island, Japan

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Latitude & Longitude (WGS84): 35° 49' 18'' North , 138° 37' 53'' East
Latitude & Longitude (decimal): 35.82167,138.63139
GeoHash:G#: xn6ef9hk3
Köppen climate type:Dfb : Warm-summer humid continental climate


High temperature veins mined since ancient times. Famous for its Japan-law quartz twinning (the original "Japan-law" locality). Old quartz specimens from here often bear the obsolete province name "Kai". In reality a group of many mines spread over several villages and mountain slopes, over parts of Kohfu city and neighboring Makioka town. The name "Otome mine" was often applied generically to material from many different mines in the Kinpuzan district.







Mineral List

Mineral list contains entries from the region specified including sub-localities

20 valid minerals. 1 (FRL) - first recorded locality of unapproved mineral/variety/etc. 1 erroneous literature entry.

Geochronology

Mineralization age: Miocene : 11.7 ± 0.4 Ma to 11.36 ± 0.86 Ma

Important note: This table is based only on rock and mineral ages recorded below and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Cenozoic
  Neogene
   Miocene
ⓘ Molybdenite (youngest age)11.36 ± 0.86 Ma
ⓘ Molybdenite (oldest age)11.7 ± 0.4 Ma

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

Cretaceous
66 - 145 Ma



ID: 3190278
Mesozoic sedimentary rocks

Age: Cretaceous (66 - 145 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

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


Localities in this Region
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Japan

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)
Palache, C., Berman, H., & Frondel, C. (1951): The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1091.
Mineralogical Record: 21: 80.
Ozawa, T., Saitow, A., Hori, H. (1998): Chemistry and crystallography of Bi-rich izoklakeite from the Otome mine, Yamanashi Prefecture, Japan and discussion of the izoklakeite-giessenite series. Mineralogical Journal 20, 179-187.

Mineral and/or Locality  
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