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:
Ochiai Mine, Kohsai, Minami-Alps City, Yamanashi, Japan

Oldest recorded age at locality: 12.22
Youngest recorded age at locality: 10.5

mindat Locality ID: 13306
mindat URL: http://www.mindat.org/loc-13306.html

Tectonic Settings:

Total number of sublocalities beneath "Ochiai Mine, Kohsai, Minami-Alps City, Yamanashi, Japan": 0
Total number of bottom-level sublocalities: 0

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 C Ca H K Mn Na O Si 

Elements from minerals reported directly at this locality: Al C Ca H K Mn Na O Si 

Structural Groups for minerals in this locality: 
BrauniteCalciteClayClinozoisiteCoronaditeEpidoteFeldsparNonePumpellyitePyroxene
QuartzRutileSerpentine

12 IMA Minerals at location:
Albite  (*)Braunite  (*)Calcite  (*)Caryopilite  (*)Clinozoisite  (*)
Cryptomelane  (*)Johannsenite  (*)Piemontite  (*)Pumpellyite-(Mn2+)  (*)Pyrolusite  (*)
Quartz  (*)Rhodochrosite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Albite  (*)FeldsparNa(AlSi3O8)12.2210.508803
Braunite  (*)BrauniteMn2+Mn3+6O8(SiO4)12.2210.50483
Calcite  (*)CalciteCa(CO3)12.2210.5027770
Caryopilite  (*)Clay SerpentineMn2+3Si2O5(OH)412.2210.5083
Clinozoisite  (*)Clinozoisite EpidoteCa2Al3[Si2O7][SiO4]O(OH)12.2210.501025
Cryptomelane  (*)CoronaditeK(Mn4+7Mn3+)O1612.2210.50599
Johannsenite  (*)PyroxeneCaMnSi2O612.2210.5073
Piemontite  (*)EpidoteCa2(Al2Mn3+)[Si2O7][SiO4]O(OH)12.2210.50260
Pumpellyite-(Mn2+)  (*)PumpellyiteCa2Mn2+Al2(Si2O7)(SiO4)(OH)2·H2O12.2210.5015
Pyrolusite  (*)RutileMnO212.2210.503106
Quartz  (*)QuartzSiO212.2210.5061156
Rhodochrosite  (*)CalciteMn(CO3)12.2210.501711



2 Ages assigned to this locality:

Excel IDMax Age (Ma)Min Age (Ma)Age as listed in referenceDating MethodAge InterpretPrioritized?Sample SourceSample NumRun NumAge from other LocalityDated MineralMinerals explicitely stated as having this ageAge applies to these ElementsMinDat Locality IDDated Locality (Max Age)Location as listed in referenceReferenceReference DOIReference IDAge Notes
Mo-0015712.111.311.7±0.4Re-Os molybdeniteOtome (Ot) YesMolybdenite Mo17066Otome Mine (Mitake Mine), Kofu City, Kinpuzan Mining District, Yamanashi, JapanHigashiyamanashi, YamanashiSuzuki et al. (1996)10.1016/0016-7037(96)00164-0GCA60_3151 
Mo-0015812.2210.511.36±0.86Re-Os molybdeniteOtome (Ot) YesMolybdenite Mo17066Otome Mine (Mitake Mine), Kofu City, Kinpuzan Mining District, Yamanashi, JapanHigashiyamanashi, YamanashiSuzuki et al. (1996)10.1016/0016-7037(96)00164-0GCA60_3151 


SampleSource LocalityReference URL


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