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

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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:
Tokachi Subprefecture, Hokkaidō, Japan


mindat Locality ID: 133814
mindat URL: http://www.mindat.org/loc-133814.html

Tectonic Settings:

Total number of sublocalities beneath "Tokachi Subprefecture, Hokkaidō, Japan": 14
Total number of bottom-level sublocalities: 8

Number of Child Localities: 4
Child Localities:
Ashoro-cho (Asyoro-tyo)
Hiroo-gun
Kato District
Obihiro City

Latitude: 42°50'46"N
Longitude: 143°10'58"E
Decimal Degree (lat, lon): 42.846111111111,143.18277777778
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 C Ca Cu Fe H K Mg Na Ni O S Si Ti 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AllophaneAmorphousCalciteChalcopyriteCorundumMordeniteNickelineNoneNot in a structural groupPentlandite
PrehnitePyritePyroxeneQuartzSpinelSulphur

22 IMA Minerals at location:
Allophane  (*)Augite  (*)Calcite  (*)Chalcopyrite  (*)Diopside  (*)
Graphite  (*)Ikaite  (*)Ilmenite  (*)Laumontite  (*)Magnetite  (*)
Monohydrocalcite  (*)Mordenite  (*)Opal  (*)Pentlandite  (*)Prehnite  (*)
Pyrite  (*)Pyrrhotite  (*)Quartz  (*)Sulphur  (*)Vaterite  (*)
Violarite  (*)Yugawaralite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Allophane  (*)AllophaneAl2O3(SiO2)1.3-2.0·2.5-3.0H2O174845470
Augite  (*)Pyroxene(Ca,Mg,Fe)2Si2O61748412060
Calcite  (*)CalciteCa(CO3)274842,7485327770
Chalcopyrite  (*)ChalcopyriteCuFeS217484727198
Diopside  (*)PyroxeneCaMgSi2O61748474135
Graphite  (*)NoneC1748472812
Ikaite  (*)NoneCa(CO3)·6H2O17484212
Ilmenite  (*)CorundumFe2+Ti4+O31748475433
Laumontite  (*)Not in a structural groupCaAl2Si4O12·4H2O1748531271
Magnetite  (*)SpinelFe2+Fe3+2O417484714899
Monohydrocalcite  (*)NoneCa(CO3)·H2O17484255
Mordenite  (*)Mordenite(Na2,Ca,K2)4(Al8Si40)O96·28H2O174853405
Opal  (*)AmorphousSiO2·nH2O274841,748512994
Pentlandite  (*)Pentlandite(Ni,Fe)9S81748471512
Prehnite  (*)PrehniteCa2Al(Si3Al)O10(OH)21748531898
Pyrite  (*)PyriteFeS2274841,7484739462
Pyrrhotite  (*)NickelineFe7S81748479056
Quartz  (*)QuartzSiO2274841,7484761156
Sulphur  (*)SulphurS1748412045
Vaterite  (*)NoneCa(CO3)17484237
Violarite  (*)SpinelFeNi2S4174847380
Yugawaralite  (*)NoneCa(Si6Al2)O16·4H2O17485333


No ages have been assigned to this locality yet.
SampleSource LocalityReference URL

All locality data graciously provided by mindat.org

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