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Toyoha mine, Sapporo, Hokkaido, Japan

Toyohaite
Toyoha mine, Sapporo, Hokkaido, Japan

Photo: 2008, JGW
Latitude: 42°58'48"N
Longitude: 141°2'28"E
A lead-zinc-indium-silver mine featuring the Izumo, Soya and Sorachi veins. Located 30 km SW of Sapporo, close to an active hydrothermal system (some tunnels reached temperatures of 100 C). This was until recently the world's largest indium producer (30t/yr), but closed when ore reserves were exhausted in June 2006.

Genetically similar to the Pingüino deposit, Argentina.

Mineral List

Acanthite
Ankerite
'Apatite'
Berndtite
Bismuth
Calcite
var: Manganoan Calcite
Canfieldite
Cassiterite
Chalcopyrite
var: Stannian Chalcopyrite
'Chlorite Group'
Dickite
Dolomite
Galena
Gold
var: Electrum

Gustavite
Hematite
Herzenbergite
Hocartite
Kaolinite
Kesterite
Laforêtite
Löllingite
Magnetite
Marcasite
Matildite
Pirquitasite
Pyrargyrite
Pyrite
Pyrophyllite
Pyroxmangite
Pyrrhotite
Quartz
Rhodochrosite
Rhodostannite
Roquesite
Rutile
Sakuraiite
Silver
Sphalerite
Stannite
Szmikite
Teallite
Tennantite
Tetrahedrite
Toyohaite (TL)
Wolframite
Wurtzite


49 entries listed. 43 valid minerals. 1 type locality (valid mineral).

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References

- Encyclopedia of Minerals, 2nd. edition: 842
- Min. Jour. (Japan): 15: 222-232.
- Kozan Chishitsu (1989), 39, 107-22.
- Masuta, Kenzo; Kamiki, Takashi; Narui, Eiichi (1996): Polymetallic mineralization at the Toyoha south district, Hokkaido, Japan. Shigen Chishitsu 46, 45-61.
- Ishihara, Shunso (2005): An attractive mineral resource: indium from the Toyoha Mine. Chishitsu Nyusu 605, 46-54 (in Japanese).

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Copyright © Jolyon Ralph and Ida Chau 1993-2012. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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