Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography

Toi mine, Izu City, Shizuoka Prefecture, Japani
Regional Level Types
Toi mineMine
Izu CityCity
Shizuoka PrefecturePrefecture
JapanCountry

This page is currently not sponsored. Click here to sponsor this page.
Key
Latitude & Longitude (WGS84):
34° 53' 59'' North , 138° 47' 49'' East
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Heda3,681 (2017)7.1km
Numazu204,318 (2017)23.1km
Mishima113,479 (2017)26.4km
Itō71,578 (2017)27.1km
Shimoda26,704 (2017)28.2km


A gold and silver mine, started in 1925 and closed in 1965. The mine was ultimately closed in 1965 and then reopened for tourism.
It worked low-temperature veins in altered volcanic rocks. Mining was made difficult by underground hot springs. (1958 production 185 Kg Au and 1,283 Kg Ag, from ore averaging 10.0 g/t Au, 69 g/t Ag. Ref: Geological Survey of Japan, 1960).
Toi was the second most productive gold mine in Japan, after the gold mine of Sado in Niigata Prefecture.

Small-scale gold mining is said to have started at Toi around 1370.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


11 valid minerals.

Detailed Mineral List:

Acanthite
Formula: Ag2S
Reference: Econ Geol (1985) 80:1415-1424; Naotatsu Shikazono & Masaaki Shimizu (1988) Electrum: Chemical composition, Mode of occurrence, and Depositional environment. Bull 32 The University Museum, The University of Tokyo
Chalcopyrite
Formula: CuFeS2
Reference: Naotatsu Shikazono & Masaaki Shimizu (1988) Electrum: Chemical composition, Mode of occurrence, and Depositional environment. Bull 32 The University Museum, The University of Tokyo
'Electrum'
Formula: (Au,Ag)
Reference: Econ Geol (1985) 80:1415-1424; Naotatsu Shikazono & Masaaki Shimizu (1988) Electrum: Chemical composition, Mode of occurrence, and Depositional environment. Bull 32 The University Museum, The University of Tokyo
Galena
Formula: PbS
Reference: Naotatsu Shikazono & Masaaki Shimizu (1988) Electrum: Chemical composition, Mode of occurrence, and Depositional environment. Bull 32 The University Museum, The University of Tokyo
Gold
Formula: Au
Reference: Kamitani, M., Okumura, K., Teraoka, Y., Miyano, S., and Watanabe, Y. (2007): Mineral Resources Map of East Asia. Geological Survey of Japan.
Pyrargyrite
Formula: Ag3SbS3
Reference: Kamitani, M., Okumura, K., Teraoka, Y., Miyano, S., and Watanabe, Y. (2007): Mineral Resources Map of East Asia. Geological Survey of Japan.
Pyrite
Formula: FeS2
Reference: Econ Geol (1985) 80:1415-1424
Quartz
Formula: SiO2
Reference: Naotatsu Shikazono & Masaaki Shimizu (1988) Electrum: Chemical composition, Mode of occurrence, and Depositional environment. Bull 32 The University Museum, The University of Tokyo
Sphalerite
Formula: ZnS
Reference: Econ Geol (1985) 80:1415-1424; Naotatsu Shikazono & Masaaki Shimizu (1988) Electrum: Chemical composition, Mode of occurrence, and Depositional environment. Bull 32 The University Museum, The University of Tokyo; Makoto Watanabe (1983) Journal of Science of the Hiroshima University, Series C, 8, #1, 67-94.
Stephanite
Formula: Ag5SbS4
Reference: Kamitani, M., Okumura, K., Teraoka, Y., Miyano, S., and Watanabe, Y. (2007): Mineral Resources Map of East Asia. Geological Survey of Japan.
Truscottite
Formula: (Ca,Mn)14Si24O58(OH)8 · 2H2O
Reference: Mineralogical Magazine 1964 33 : 821-840
Wairakite
Formula: Ca(Al2Si4O12) · 2H2O
Reference: Knut Eldjarn specimen

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Electrum'1.AA.05(Au,Ag)
Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
Acanthite2.BA.35Ag2S
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Pyrargyrite2.GA.05Ag3SbS3
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Stephanite2.GB.10Ag5SbS4
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 9 - Silicates
Truscottite9.EE.35(Ca,Mn)14Si24O58(OH)8 · 2H2O
Wairakite9.GB.05Ca(Al2Si4O12) · 2H2O

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Acanthite2.4.1.1Ag2S
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
ø = 4
Stephanite3.2.4.1Ag5SbS4
ø = 3
Pyrargyrite3.4.1.2Ag3SbS3
Group 73 - PHYLLOSILICATES Condensed Tetrahedral Sheets
Condensed Tetrahedral Sheets with double and single layers
Truscottite73.2.2a.2(Ca,Mn)14Si24O58(OH)8 · 2H2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Wairakite77.1.1.3Ca(Al2Si4O12) · 2H2O
Unclassified Minerals, Mixtures, etc.
'Electrum'-(Au,Ag)

List of minerals for each chemical element

HHydrogen
H Truscottite(Ca,Mn)14Si24O58(OH)8 · 2H2O
H WairakiteCa(Al2Si4O12) · 2H2O
OOxygen
O Truscottite(Ca,Mn)14Si24O58(OH)8 · 2H2O
O WairakiteCa(Al2Si4O12) · 2H2O
O QuartzSiO2
AlAluminium
Al WairakiteCa(Al2Si4O12) · 2H2O
SiSilicon
Si Truscottite(Ca,Mn)14Si24O58(OH)8 · 2H2O
Si WairakiteCa(Al2Si4O12) · 2H2O
Si QuartzSiO2
SSulfur
S AcanthiteAg2S
S SphaleriteZnS
S PyriteFeS2
S GalenaPbS
S ChalcopyriteCuFeS2
S StephaniteAg5SbS4
S PyrargyriteAg3SbS3
CaCalcium
Ca Truscottite(Ca,Mn)14Si24O58(OH)8 · 2H2O
Ca WairakiteCa(Al2Si4O12) · 2H2O
FeIron
Fe PyriteFeS2
Fe ChalcopyriteCuFeS2
CuCopper
Cu ChalcopyriteCuFeS2
ZnZinc
Zn SphaleriteZnS
AgSilver
Ag AcanthiteAg2S
Ag Electrum(Au,Ag)
Ag StephaniteAg5SbS4
Ag PyrargyriteAg3SbS3
SbAntimony
Sb StephaniteAg5SbS4
Sb PyrargyriteAg3SbS3
AuGold
Au Electrum(Au,Ag)
Au GoldAu
PbLead
Pb GalenaPbS

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Kamitani, M., Okumura, K., Teraoka, Y., Miyano, S., and Watanabe, Y. (2007): Mineral Resources Map of East Asia. Geological Survey of Japan.

External Links


Other Regions, Features and Areas containing this locality

AsiaContinent
Japan
Philippine Sea PlateTectonic Plate

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.
 
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2020, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: February 19, 2020 13:00:48 Page generated: January 30, 2020 13:55:35
Go to top of page