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Ohkawame mine (Okawame mine), Kuji City, Iwate, Japani
Regional Level Types
Ohkawame mine (Okawame mine)Mine
Kuji CityCity
IwatePrefecture
JapanCountry

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Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 39° North , 141° East (est.)
Margin of Error:~56km
Locality type:Mine
Köppen climate type:Dfb : Warm-summer humid continental climate


Molybdenum mineralization (mainly molybdenite) in skarn, mined in 1943-1948 and 1963-1965; now closed. During the first period (1943-1948) produced 61,000 tons crude ore, with 0.4 to 0.7% molybdenite. Includes the Inari, Iwai, and Tengu orebodies.
Ref: D Ishiyama, T Fuchino, K Kaneko, T Mizuta and O Fujikawa (2000) Tungsten mineralization of the Ohkawame molybdenite deposit in Kuji city, Iwate prefecture, Japan. Journal of the Mining College, Akita University, Ser. A, VIII, #3, 105-127.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


18 valid minerals.

Detailed Mineral List:

'Albite-Anorthite Series'
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.
'Amphibole Supergroup'
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.
'Biotite'
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.
Calcite
Formula: CaCO3
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.
Chalcopyrite
Formula: CuFeS2
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.
'Clinopyroxene Subgroup'
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.
Ferrobustamite
Formula: CaFe2+(Si2O6)
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.
Graphite
Formula: C
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.
Hedenbergite
Formula: CaFe2+Si2O6
Reference: Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
Joséite-B
Formula: Bi4Te2S
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.
Molybdenite
Formula: MoS2
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.
Nickeline
Formula: NiAs
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.
Pentlandite
Formula: (FexNiy)Σ9S8
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.
Pyrite
Formula: FeS2
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.
Pyrrhotite
Formula: Fe7S8
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.
Quartz
Formula: SiO2
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.
Safflorite
Formula: (Co,Ni,Fe)As2
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.
Scheelite
Formula: Ca(WO4)
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.
Sphalerite
Formula: ZnS
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.
Titanite
Formula: CaTi(SiO4)O
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.
Violarite
Formula: Fe2+Ni3+2S4
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.
Wollastonite
Formula: CaSiO3
Reference: D Ishiyama, et al (2000) J. Min. Coll. Akita Univ., Ser. A, 3, no. 3, 105-127.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Graphite'1.CB.05aC
Group 2 - Sulphides and Sulfosalts
'Chalcopyrite'2.CB.10aCuFeS2
'Joséite-B'2.DC.05Bi4Te2S
'Molybdenite'2.EA.30MoS2
'Nickeline'2.CC.05NiAs
'Pentlandite'2.BB.15(FexNiy)Σ9S8
'Pyrite'2.EB.05aFeS2
'Pyrrhotite'2.CC.10Fe7S8
'Safflorite'2.EB.15a(Co,Ni,Fe)As2
'Sphalerite'2.CB.05aZnS
'Violarite'2.DA.05Fe2+Ni3+2S4
Group 4 - Oxides and Hydroxides
'Quartz'4.DA.05SiO2
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Scheelite'7.GA.05Ca(WO4)
Group 9 - Silicates
'Ferrobustamite'9.DG.05CaFe2+(Si2O6)
'Hedenbergite'9.DA.15CaFe2+Si2O6
'Titanite'9.AG.15CaTi(SiO4)O
'Wollastonite'9.DG.05CaSiO3
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Biotite'-
'Clinopyroxene Subgroup'-
'Garnet Group'-X3Z2(SiO4)3

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Graphite1.3.6.2C
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 4:3
Joséite-B2.6.2.2Bi4Te2S
AmBnXp, with (m+n):p = 9:8
Pentlandite2.7.1.1(FexNiy)Σ9S8
AmXp, with m:p = 1:1
Nickeline2.8.11.1NiAs
Pyrrhotite2.8.10.1Fe7S8
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 3:4
Violarite2.10.1.8Fe2+Ni3+2S4
AmBnXp, with (m+n):p = 1:2
Molybdenite2.12.10.1MoS2
Pyrite2.12.1.1FeS2
Safflorite2.12.2.11(Co,Ni,Fe)As2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Scheelite48.1.2.1Ca(WO4)
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Hedenbergite65.1.3a.2CaFe2+Si2O6
Single-Width Unbranched Chains, W=1 with chains P=3
Ferrobustamite65.2.1.3CaFe2+(Si2O6)
Wollastonite65.2.1.1cCaSiO3
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Biotite'-
'Clinopyroxene Subgroup'-
'Garnet Group'-X3Z2(SiO4)3

List of minerals for each chemical element

HHydrogen
H Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
CCarbon
C CalciteCaCO3
C GraphiteC
OOxygen
O Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
O CalciteCaCO3
O FerrobustamiteCaFe2+(Si2O6)
O Garnet GroupX3Z2(SiO4)3
O HedenbergiteCaFe2+Si2O6
O QuartzSiO2
O ScheeliteCa(WO4)
O TitaniteCaTi(SiO4)O
O WollastoniteCaSiO3
FFluorine
F Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
AlAluminium
Al Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
SiSilicon
Si Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Si FerrobustamiteCaFe2+(Si2O6)
Si Garnet GroupX3Z2(SiO4)3
Si HedenbergiteCaFe2+Si2O6
Si QuartzSiO2
Si TitaniteCaTi(SiO4)O
Si WollastoniteCaSiO3
SSulfur
S ChalcopyriteCuFeS2
S Joséite-BBi4Te2S
S MolybdeniteMoS2
S Pentlandite(FexNiy)Σ9S8
S PyriteFeS2
S PyrrhotiteFe7S8
S SphaleriteZnS
S ViolariteFe2+Ni23+S4
ClChlorine
Cl Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
CaCalcium
Ca CalciteCaCO3
Ca FerrobustamiteCaFe2+(Si2O6)
Ca HedenbergiteCaFe2+Si2O6
Ca ScheeliteCa(WO4)
Ca TitaniteCaTi(SiO4)O
Ca WollastoniteCaSiO3
TiTitanium
Ti Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Ti TitaniteCaTi(SiO4)O
FeIron
Fe ChalcopyriteCuFeS2
Fe FerrobustamiteCaFe2+(Si2O6)
Fe HedenbergiteCaFe2+Si2O6
Fe Pentlandite(FexNiy)Σ9S8
Fe PyriteFeS2
Fe PyrrhotiteFe7S8
Fe ViolariteFe2+Ni23+S4
CoCobalt
Co Safflorite(Co,Ni,Fe)As2
NiNickel
Ni NickelineNiAs
Ni Pentlandite(FexNiy)Σ9S8
Ni ViolariteFe2+Ni23+S4
CuCopper
Cu ChalcopyriteCuFeS2
ZnZinc
Zn SphaleriteZnS
AsArsenic
As NickelineNiAs
As Safflorite(Co,Ni,Fe)As2
MoMolybdenum
Mo MolybdeniteMoS2
TeTellurium
Te Joséite-BBi4Te2S
WTungsten
W ScheeliteCa(WO4)
BiBismuth
Bi Joséite-BBi4Te2S

Geochronology

Mineralization age: Early Cretaceous : 133.6 Ma to 112 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
 Mesozoic
  Cretaceous
   Early Cretaceous
ⓘ Molybdenite (youngest age)112 Ma
ⓘ Molybdenite (oldest age)133.6 Ma

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