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Inakuraishi mine, Furubira, Shakotan peninsula, Shiribeshi Province, Hokkaido, Japan

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Latitude & Longitude (WGS84): 43° 9' North , 140° 38' East
Latitude & Longitude (decimal): 43.15000,140.63333
GeoHash:G#: xpsj2pnnf
Locality type:Mine
Köppen climate type:Dfb : Warm-summer humid continental climate


Largest manganese deposit in Japan. (1944 production: 72,000 tons @ 27% Mn, mainly from rhodochrosite.) Mine now closed. En echelon hydrothermal rhodochrosite veins in Tertiary volcanosedimentary rocks. The largest vein had a strike of 900 meters, x 5m thick. Has produced many beautiful rhodochrosite specimens now widely distributed in collections.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


18 valid minerals. 1 erroneous literature entry.

Detailed Mineral List:

Acanthite
Formula: Ag2S
Reference: Katsu Kaneko (1956): Manganese Deposits of Japan; Symposium sobre Yacimientos de Manganeso, Mexico
Alabandite
Formula: MnS
Reference: Katsu Kaneko (1956): Manganese Deposits of Japan; Symposium sobre Yacimientos de Manganeso, Mexico
Arsenopyrite
Formula: FeAsS
Reference: Kamitani, M., Okumura, K., Teraoka, Y., Miyano, S., and Watanabe, Y. (2007): Mineral Resources Map of East Asia. Geological Survey of Japan.
Baryte
Formula: BaSO4
Reference: Alfredo Petrov specimen
Calcite
Formula: CaCO3
Reference: Katsu Kaneko (1956): Manganese Deposits of Japan; Symposium sobre Yacimientos de Manganeso, Mexico
Chalcopyrite
Formula: CuFeS2
Reference: Katsu Kaneko (1956): Manganese Deposits of Japan; Symposium sobre Yacimientos de Manganeso, Mexico
'Chlorite Group'
Reference: Katsu Kaneko (1956): Manganese Deposits of Japan; Symposium sobre Yacimientos de Manganeso, Mexico
Fizélyite ?
Formula: Ag5Pb14Sb21S48
Description: (probably uchucchacuaite)
Reference: Forrest Cureton specimens; Handbook of Mineralogy
Galena
Formula: PbS
Reference: Katsu Kaneko (1956): Manganese Deposits of Japan; Symposium sobre Yacimientos de Manganeso, Mexico
Ilesite
Formula: (Mn,Zn,Fe)SO4 · 4H2O
Reference: Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
Inesite
Formula: Ca2(Mn,Fe)7Si10O28(OH)2 · 5H2O
Reference: Janet Clifford (2011) Rocks & Minerals, 86, #3, 254-255.
Jôkokuite
Formula: MnSO4 · 5H2O
Reference: Matsueda et al (1980) Sanko-Gakkai Kou'en-Youshi, 68.
Pyrite
Formula: FeS2
Reference: Katsu Kaneko (1956): Manganese Deposits of Japan; Symposium sobre Yacimientos de Manganeso, Mexico; Makoto Watanabe (1983) Journal of Science of the Hiroshima University, Series C, 8, #1, 67-94.
Quartz
Formula: SiO2
Reference: Katsu Kaneko (1956): Manganese Deposits of Japan; Symposium sobre Yacimientos de Manganeso, Mexico
Ramdohrite
Formula: Pb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24
Description: (= uchucchacuaite)
Reference: AMNH specimen
Rhodochrosite
Formula: MnCO3
Reference: Katsu Kaneko (1956): Manganese Deposits of Japan; Symposium sobre Yacimientos de Manganeso, Mexico
Sphalerite
Formula: ZnS
Reference: Katsu Kaneko (1956): Manganese Deposits of Japan; Symposium sobre Yacimientos de Manganeso, Mexico; Makoto Watanabe (1983) Journal of Science of the Hiroshima University, Series C, 8, #1, 67-94.
Stibnite
Formula: Sb2S3
Reference: Kamitani, M., Okumura, K., Teraoka, Y., Miyano, S., and Watanabe, Y. (2007): Mineral Resources Map of East Asia. Geological Survey of Japan.
Tetrahedrite
Formula: Cu6[Cu4(Fe,Zn)2]Sb4S13
Reference: AMNH specimen
Uchucchacuaite
Formula: AgMnPb3Sb5S12
Habit: prismatic crystals to 8mm long
Description: Previously sold on the systematic species market as "fizelyite", but multiple tests by powder XRD and analyses by microprobe confirm it as uchucchacuaite.
Reference: Komuro collection

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
'Acanthite'2.BA.35Ag2S
'Alabandite'2.CD.10MnS
'Arsenopyrite'2.EB.20FeAsS
'Chalcopyrite'2.CB.10aCuFeS2
'Fizélyite' ?2.JB.40aAg5Pb14Sb21S48
'Galena'2.CD.10PbS
'Pyrite'2.EB.05aFeS2
'Ramdohrite' ?2.JB.40aPb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24
'Sphalerite'2.CB.05aZnS
'Stibnite'2.DB.05Sb2S3
'Tetrahedrite'2.GB.05Cu6[Cu4(Fe,Zn)2]Sb4S13
'Uchucchacuaite'2.JB.40aAgMnPb3Sb5S12
Group 4 - Oxides and Hydroxides
'Quartz'4.DA.05SiO2
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3
'Rhodochrosite'5.AB.05MnCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Baryte'7.AD.35BaSO4
'Ilesite'7.CB.15(Mn,Zn,Fe)SO4 · 4H2O
'Jôkokuite'7.CB.20MnSO4 · 5H2O
Group 9 - Silicates
'Inesite'9.DL.05Ca2(Mn,Fe)7Si10O28(OH)2 · 5H2O
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Acanthite2.4.1.1Ag2S
AmXp, with m:p = 1:1
Alabandite2.8.1.4MnS
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 2:3
Stibnite2.11.2.1Sb2S3
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
3 <ø < 4
Tetrahedrite3.3.6.1Cu6[Cu4(Fe,Zn)2]Sb4S13
ø = 3
Fizélyite ?3.4.15.8Ag5Pb14Sb21S48
Ramdohrite ?3.4.15.6Pb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24
Uchucchacuaite3.4.15.5AgMnPb3Sb5S12
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Rhodochrosite14.1.1.4MnCO3
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Ilesite29.6.6.3(Mn,Zn,Fe)SO4 · 4H2O
Jôkokuite29.6.7.4MnSO4 · 5H2O
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Ca-Na subgroup
Inesite66.3.3.1Ca2(Mn,Fe)7Si10O28(OH)2 · 5H2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-

List of minerals for each chemical element

HHydrogen
H Ilesite(Mn,Zn,Fe)SO4 · 4H2O
H InesiteCa2(Mn,Fe)7Si10O28(OH)2 · 5H2O
H JôkokuiteMnSO4 · 5H2O
CCarbon
C CalciteCaCO3
C RhodochrositeMnCO3
OOxygen
O BaryteBaSO4
O CalciteCaCO3
O Ilesite(Mn,Zn,Fe)SO4 · 4H2O
O InesiteCa2(Mn,Fe)7Si10O28(OH)2 · 5H2O
O JôkokuiteMnSO4 · 5H2O
O QuartzSiO2
O RhodochrositeMnCO3
SiSilicon
Si InesiteCa2(Mn,Fe)7Si10O28(OH)2 · 5H2O
Si QuartzSiO2
SSulfur
S AcanthiteAg2S
S AlabanditeMnS
S ArsenopyriteFeAsS
S BaryteBaSO4
S ChalcopyriteCuFeS2
S FizélyiteAg5Pb14Sb21S48
S GalenaPbS
S Ilesite(Mn,Zn,Fe)SO4 · 4H2O
S JôkokuiteMnSO4 · 5H2O
S PyriteFeS2
S RamdohritePb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24
S SphaleriteZnS
S StibniteSb2S3
S TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
S UchucchacuaiteAgMnPb3Sb5S12
CaCalcium
Ca CalciteCaCO3
Ca InesiteCa2(Mn,Fe)7Si10O28(OH)2 · 5H2O
MnManganese
Mn AlabanditeMnS
Mn Ilesite(Mn,Zn,Fe)SO4 · 4H2O
Mn InesiteCa2(Mn,Fe)7Si10O28(OH)2 · 5H2O
Mn JôkokuiteMnSO4 · 5H2O
Mn RhodochrositeMnCO3
Mn UchucchacuaiteAgMnPb3Sb5S12
FeIron
Fe ArsenopyriteFeAsS
Fe ChalcopyriteCuFeS2
Fe Ilesite(Mn,Zn,Fe)SO4 · 4H2O
Fe PyriteFeS2
Fe TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
CuCopper
Cu ChalcopyriteCuFeS2
Cu TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
ZnZinc
Zn Ilesite(Mn,Zn,Fe)SO4 · 4H2O
Zn SphaleriteZnS
Zn TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
AsArsenic
As ArsenopyriteFeAsS
AgSilver
Ag AcanthiteAg2S
Ag FizélyiteAg5Pb14Sb21S48
Ag RamdohritePb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24
Ag UchucchacuaiteAgMnPb3Sb5S12
CdCadmium
Cd RamdohritePb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24
SbAntimony
Sb FizélyiteAg5Pb14Sb21S48
Sb RamdohritePb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24
Sb StibniteSb2S3
Sb TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
Sb UchucchacuaiteAgMnPb3Sb5S12
BaBarium
Ba BaryteBaSO4
PbLead
Pb FizélyiteAg5Pb14Sb21S48
Pb GalenaPbS
Pb RamdohritePb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24
Pb UchucchacuaiteAgMnPb3Sb5S12

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

Cenozoic
0 - 66 Ma



ID: 3184497
Cenozoic sedimentary and volcanic rocks

Age: Cenozoic (0 - 66 Ma)

Lithology: Sedimentary and volcanic 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

References

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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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