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Akaishi mine, Doi, Shikokuchuo City, Ehime Prefecture, Japani
Regional Level Types
Akaishi mineMine
Doi- not defined -
Shikokuchuo CityCity
Ehime PrefecturePrefecture
JapanCountry

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PhotosMapsSearch
00403800017272080103134.jpg
Chromium-bearing Clinochlore

Akaishi mine, Doi, Shikokuchuo City, Ehime Prefecture, Japan
05727370017271951414672.jpg
Chromio-pargasite

Akaishi mine, Doi, Shikokuchuo City, Ehime Prefecture, Japan
08858110017360850156691.jpg
Chromio-pargasite

Akaishi mine, Doi, Shikokuchuo City, Ehime Prefecture, Japan
00403800017272080103134.jpg
Chromium-bearing Clinochlore

Akaishi mine, Doi, Shikokuchuo City, Ehime Prefecture, Japan
08972230017271951404935.jpg
Chromio-pargasite

Akaishi mine, Doi, Shikokuchuo City, Ehime Prefecture, Japan
08858110017360850156691.jpg
Chromio-pargasite

Akaishi mine, Doi, Shikokuchuo City, Ehime Prefecture, Japan
00403800017272080103134.jpg
Chromium-bearing Clinochlore

Akaishi mine, Doi, Shikokuchuo City, Ehime Prefecture, Japan
05727370017271951414672.jpg
Chromio-pargasite

Akaishi mine, Doi, Shikokuchuo City, Ehime Prefecture, Japan
Latitude & Longitude (WGS84):
33° North , 133° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~19km
GRN:
N23E80
Type:
Mine
Köppen climate type:
Cfa : Humid subtropical climate
Mindat Locality ID:
53649
Long-form identifier:
mindat:1:2:53649:2
GUID (UUID V4):
0


Chromite orebodies, the largest being 50 meters long and 2 meters thick, hosted in serpentine and the neighboring mica schists that were intruded by the serpentine. Used to also produce about 1,000 tons a month of dunite rock, mainly for production of refractories, with minor associated chromium production. Minor eclogite rock is also present.



(See also under "Higashi-Akaishi dunite".)

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


15 valid minerals. 1 (TL) - type locality of valid minerals.

Detailed Mineral List:

ⓘ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘ Calcite
Formula: CaCO3
ⓘ Chromio-pargasite (TL)
Formula: NaCa2(Mg4Cr)(Si6Al2)O22(OH)2
Type Locality:
ⓘ Chromite
Formula: Fe2+Cr3+2O4
ⓘ Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
ⓘ Clinochlore var. Chromium-bearing Clinochlore
Formula: Mg5(Al,Cr)2Si3O10(OH)8
ⓘ Diopside
Formula: CaMgSi2O6
ⓘ Diopside var. Chromium-bearing Diopside
Formula: Ca(Mg,Cr)Si2O6
ⓘ Forsterite
Formula: Mg2SiO4
ⓘ Magnesiochromite
Formula: MgCr2O4
ⓘ Magnesite
Formula: MgCO3
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Omphacite
Formula: (NaaCabFe2+cMgd)(AleFe3+fFe2+gMgh)Si2O6
ⓘ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
ⓘ Pyrope
Formula: Mg3Al2(SiO4)3
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
ⓘ Talc
Formula: Mg3Si4O10(OH)2
ⓘ Uvarovite
Formula: Ca3Cr2(SiO4)3

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘChromite4.BB.05Fe2+Cr3+2O4
ⓘMagnesiochromite4.BB.05MgCr2O4
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘMagnesite5.AB.05MgCO3
Group 9 - Silicates
ⓘForsterite9.AC.05Mg2SiO4
ⓘPyrope9.AD.25Mg3Al2(SiO4)3
ⓘUvarovite9.AD.25Ca3Cr2(SiO4)3
ⓘDiopside
var. Chromium-bearing Diopside		9.DA.15Ca(Mg,Cr)Si2O6
ⓘ9.DA.15CaMgSi2O6
ⓘOmphacite9.DA.20(NaaCabFe2+cMgd)(AleFe3+fFe2+gMgh)Si2O6
ⓘActinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘChromio-pargasite (TL)9.DE.15NaCa2(Mg4Cr)(Si6Al2)O22(OH)2
ⓘTalc9.EC.05Mg3Si4O10(OH)2
ⓘPhlogopite9.EC.20KMg3(AlSi3O10)(OH)2
ⓘClinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
ⓘvar. Chromium-bearing Clinochlore9.EC.55Mg5(Al,Cr)2Si3O10(OH)8
Unclassified
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4

List of minerals for each chemical element

HHydrogen
Hⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Hⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Hⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Hⓘ TalcMg3Si4O10(OH)2
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
Hⓘ Chromio-pargasiteNaCa2(Mg4Cr)(Si6Al2)O22(OH)2
CCarbon
Cⓘ CalciteCaCO3
Cⓘ MagnesiteMgCO3
OOxygen
Oⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oⓘ CalciteCaCO3
Oⓘ Diopside var. Chromium-bearing DiopsideCa(Mg,Cr)Si2O6
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Oⓘ DiopsideCaMgSi2O6
Oⓘ ForsteriteMg2SiO4
Oⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Oⓘ MagnesiteMgCO3
Oⓘ MagnesiochromiteMgCr2O4
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ Omphacite(NaaCabFec2+Mgd)(AleFef3+Feg2+Mgh)Si2O6
Oⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Oⓘ PyropeMg3Al2(SiO4)3
Oⓘ TalcMg3Si4O10(OH)2
Oⓘ UvaroviteCa3Cr2(SiO4)3
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
Oⓘ Chromio-pargasiteNaCa2(Mg4Cr)(Si6Al2)O22(OH)2
NaSodium
Naⓘ Omphacite(NaaCabFec2+Mgd)(AleFef3+Feg2+Mgh)Si2O6
Naⓘ Chromio-pargasiteNaCa2(Mg4Cr)(Si6Al2)O22(OH)2
MgMagnesium
Mgⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mgⓘ Diopside var. Chromium-bearing DiopsideCa(Mg,Cr)Si2O6
Mgⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Mgⓘ DiopsideCaMgSi2O6
Mgⓘ ForsteriteMg2SiO4
Mgⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Mgⓘ MagnesiteMgCO3
Mgⓘ MagnesiochromiteMgCr2O4
Mgⓘ Omphacite(NaaCabFec2+Mgd)(AleFef3+Feg2+Mgh)Si2O6
Mgⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Mgⓘ PyropeMg3Al2(SiO4)3
Mgⓘ TalcMg3Si4O10(OH)2
Mgⓘ Chromio-pargasiteNaCa2(Mg4Cr)(Si6Al2)O22(OH)2
AlAluminium
Alⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Alⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Alⓘ Omphacite(NaaCabFec2+Mgd)(AleFef3+Feg2+Mgh)Si2O6
Alⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Alⓘ PyropeMg3Al2(SiO4)3
Alⓘ Chromio-pargasiteNaCa2(Mg4Cr)(Si6Al2)O22(OH)2
SiSilicon
Siⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siⓘ Diopside var. Chromium-bearing DiopsideCa(Mg,Cr)Si2O6
Siⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Siⓘ DiopsideCaMgSi2O6
Siⓘ ForsteriteMg2SiO4
Siⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Siⓘ Omphacite(NaaCabFec2+Mgd)(AleFef3+Feg2+Mgh)Si2O6
Siⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Siⓘ PyropeMg3Al2(SiO4)3
Siⓘ TalcMg3Si4O10(OH)2
Siⓘ UvaroviteCa3Cr2(SiO4)3
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
Siⓘ Chromio-pargasiteNaCa2(Mg4Cr)(Si6Al2)O22(OH)2
KPotassium
Kⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Caⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caⓘ CalciteCaCO3
Caⓘ Diopside var. Chromium-bearing DiopsideCa(Mg,Cr)Si2O6
Caⓘ DiopsideCaMgSi2O6
Caⓘ Omphacite(NaaCabFec2+Mgd)(AleFef3+Feg2+Mgh)Si2O6
Caⓘ UvaroviteCa3Cr2(SiO4)3
Caⓘ Chromio-pargasiteNaCa2(Mg4Cr)(Si6Al2)O22(OH)2
CrChromium
Crⓘ Diopside var. Chromium-bearing DiopsideCa(Mg,Cr)Si2O6
Crⓘ ChromiteFe2+Cr23+O4
Crⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Crⓘ MagnesiochromiteMgCr2O4
Crⓘ UvaroviteCa3Cr2(SiO4)3
Crⓘ Chromio-pargasiteNaCa2(Mg4Cr)(Si6Al2)O22(OH)2
FeIron
Feⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feⓘ ChromiteFe2+Cr23+O4
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ Omphacite(NaaCabFec2+Mgd)(AleFef3+Feg2+Mgh)Si2O6

Other Regions, Features and Areas containing this locality

Amur PlateTectonic Plate
AsiaContinent
Eurasian Plate
Japan

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.

References

Takeo Katou (1921) Notes on the banded chromite ore from the Akaishi mine in the province of Iyo, Japan. Journal of the Geological Society of Tokyo, 28, #331.
Nishio-Hamane, Daisuke, Ohnishi, Masayuki, Minakawa, Tetsuo, Yamaura, Jun-ichi, Saito, Shohei, Kadota, Ryo (2012) Ehimeite, NaCa2Mg4CrSi6Al2O22(OH)2: The first Cr-dominant amphibole from the Akaishi Mine, Higashi-Akaishi Mountain, Ehime Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 107 (1) 1-7 doi:10.2465/jmps.110715
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