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

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PhotosMapsSearch
04855440014977655173301.jpg
Wairakite

Toi mine, Izu City, Shizuoka Prefecture, Japan
07945730014946256001567.jpg
Wairakite

Toi mine, Izu City, Shizuoka Prefecture, Japan
05817840014959574584665.jpg
Wairakite

Toi mine, Izu City, Shizuoka Prefecture, Japan
04855440014977655173301.jpg
Wairakite

Toi mine, Izu City, Shizuoka Prefecture, Japan
07945730014946256001567.jpg
Wairakite

Toi mine, Izu City, Shizuoka Prefecture, Japan
09817740014958963552445.jpg
Wairakite

Toi mine, Izu City, Shizuoka Prefecture, Japan
04855440014977655173301.jpg
Wairakite

Toi mine, Izu City, Shizuoka Prefecture, Japan
07945730014946256001567.jpg
Wairakite

Toi mine, Izu City, Shizuoka Prefecture, Japan
Latitude & Longitude (WGS84):
34° 53' 59'' North , 138° 47' 49'' East
Latitude & Longitude (decimal):
34.90000,138.79722
GeoHash:
G#: xn4ww3m51
GRN:
N24E81
Locality type:
Mine
KΓΆppen climate type:
Cfa : Humid subtropical climate
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 Gallery Strunz Chemical Elements

Mineral List


11 valid minerals.

Detailed Mineral List:

β“˜ 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
β“˜ 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
β“˜ 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
β“˜ 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.
β“˜ Gold var. 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
β“˜ 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.
β“˜ Pyrite
Formula: FeS2
Reference: Econ Geol (1985) 80:1415-1424
β“˜ 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
β“˜ 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.
β“˜ 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.
β“˜ Truscottite
Formula: (Ca,Mn)14Si24O58(OH)8 · 2H2O
Reference: Mineralogical Magazine 1964 33 : 821-840
trans.png
Wairakite

Toi mine, Izu City, Shizuoka Prefecture, Japan
β“˜ Wairakite
Formula: Ca(Al2Si4O12) · 2H2O
Reference: Knut Eldjarn specimen

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Gold1.AA.05Au
β“˜var. Electrum1.AA.05(Au,Ag)
Group 2 - Sulphides and Sulfosalts
β“˜Acanthite2.BA.35Ag2S
β“˜Chalcopyrite2.CB.10aCuFeS2
β“˜Galena2.CD.10PbS
β“˜Pyrargyrite2.GA.05Ag3SbS3
β“˜Pyrite2.EB.05aFeS2
β“˜Sphalerite2.CB.05aZnS
β“˜Stephanite2.GB.10Ag5SbS4
Group 4 - Oxides and Hydroxides
β“˜Quartz4.DA.05SiO2
Group 9 - Silicates
β“˜Truscottite9.EE.35(Ca,Mn)14Si24O58(OH)8 Β· 2H2O
β“˜Wairakite9.GB.05Ca(Al2Si4O12) Β· 2H2O

List of minerals for each chemical element

HHydrogen
Hβ“˜ Truscottite(Ca,Mn)14Si24O58(OH)8 · 2H2O
Hβ“˜ WairakiteCa(Al2Si4O12) · 2H2O
OOxygen
Oβ“˜ Truscottite(Ca,Mn)14Si24O58(OH)8 · 2H2O
Oβ“˜ WairakiteCa(Al2Si4O12) · 2H2O
Oβ“˜ QuartzSiO2
AlAluminium
Alβ“˜ WairakiteCa(Al2Si4O12) · 2H2O
SiSilicon
Siβ“˜ Truscottite(Ca,Mn)14Si24O58(OH)8 · 2H2O
Siβ“˜ WairakiteCa(Al2Si4O12) · 2H2O
Siβ“˜ QuartzSiO2
SSulfur
Sβ“˜ AcanthiteAg2S
Sβ“˜ SphaleriteZnS
Sβ“˜ PyriteFeS2
Sβ“˜ GalenaPbS
Sβ“˜ ChalcopyriteCuFeS2
Sβ“˜ StephaniteAg5SbS4
Sβ“˜ PyrargyriteAg3SbS3
CaCalcium
Caβ“˜ Truscottite(Ca,Mn)14Si24O58(OH)8 · 2H2O
Caβ“˜ WairakiteCa(Al2Si4O12) · 2H2O
MnManganese
Mnβ“˜ Truscottite(Ca,Mn)14Si24O58(OH)8 · 2H2O
FeIron
Feβ“˜ PyriteFeS2
Feβ“˜ ChalcopyriteCuFeS2
CuCopper
Cuβ“˜ ChalcopyriteCuFeS2
ZnZinc
Znβ“˜ SphaleriteZnS
AgSilver
Agβ“˜ AcanthiteAg2S
Agβ“˜ Gold var. Electrum(Au,Ag)
Agβ“˜ StephaniteAg5SbS4
Agβ“˜ PyrargyriteAg3SbS3
SbAntimony
Sbβ“˜ StephaniteAg5SbS4
Sbβ“˜ PyrargyriteAg3SbS3
AuGold
Auβ“˜ Gold var. Electrum(Au,Ag)
Auβ“˜ GoldAu
PbLead
Pbβ“˜ 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.

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