Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org



The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.


Locality Name:
Kumaishi, Oshima Peninsula, Hokkaidō, Japan


mindat Locality ID: 285897
mindat URL: http://www.mindat.org/loc-285897.html

Tectonic Settings:

Total number of sublocalities beneath "Kumaishi, Oshima Peninsula, Hokkaidō, Japan": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Tatehira Mine

Latitude: 0°0'0"N
Longitude: 0°0'0"E
Decimal Degree (lat, lon): 0,0
AThis mineral is Anthropogenic.
GThis mineral is directly dated.
BThis mineral is reported as having this age.
YThis mineral is using an age reported as an element mineralization period.
OThis mineral is using an age calculated from all data at the locality.
RThe age displayed for this mineral originates from a different, non-child locality.
PThe age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
This mineral's age has not yet been recorded.

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Al As C Ca Co Cu Fe H Mg Mn Ni O S Si Ti 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AmphiboleArsenopyriteBrauniteCalciteChalcopyriteCobaltiteCorundumGarnetHumiteNone
OlivinePyritePyroxeneRhodoniteRocksaltSpinel

19 IMA Minerals at location:
Alabandite  (*)Arsenopyrite  (*)Braunite  (*)Chalcopyrite  (*)Cobaltite  (*)
Cummingtonite  (*)Donpeacorite  (*)Galaxite  (*)Johannsenite  (*)Kanoite  (*)
Gersdorffite-Pa3  (*)Pyrite  (*)Pyrophanite  (*)Pyroxmangite  (*)Rhodochrosite  (*)
Rhodonite  (*)Sonolite  (*)Spessartine  (*)Tephroite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Alabandite  (*)RocksaltMnS174763312
Arsenopyrite  (*)ArsenopyriteFeAsS1747639052
Braunite  (*)BrauniteMn2+Mn3+6O8(SiO4)174763483
Chalcopyrite  (*)ChalcopyriteCuFeS217476327198
Cobaltite  (*)CobaltiteCoAsS174763966
Cummingtonite  (*)Amphibole   Mg2Mg5Si8O22(OH)2174763327
Donpeacorite  (*)Pyroxene(Mn,Mg)MgSi2O61747634
Galaxite  (*)SpinelMn2+Al2O417476343
Johannsenite  (*)PyroxeneCaMnSi2O617476373
Kanoite  (*)PyroxeneMnMgSi2O61747637
Gersdorffite-Pa3  (*)PyriteNiAsS174763767
Pyrite  (*)PyriteFeS217476339462
Pyrophanite  (*)CorundumMn2+TiO3174763244
Pyroxmangite  (*)NoneMn2+SiO3174763147
Rhodochrosite  (*)CalciteMn(CO3)1747631711
Rhodonite  (*)RhodoniteCaMn3Mn(Si5O15)174763969
Sonolite  (*)HumiteMn2+9(SiO4)4(OH)217476350
Spessartine  (*)GarnetMn2+3Al2(SiO4)31747631214
Tephroite  (*)OlivineMn2+2(SiO4)174763240


No ages have been assigned to this locality yet.

All locality data graciously provided by mindat.org

All age data...

Other copyright data...