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:
Otaniyama Mine, Yamada-machi, Shimohei District, Iwate, Japan

Oldest recorded age at locality: 247
Youngest recorded age at locality: 201

mindat Locality ID: 159512
mindat URL: http://www.mindat.org/loc-159512.html

Tectonic Settings:

Total number of sublocalities beneath "Otaniyama Mine, Yamada-machi, Shimohei District, Iwate, 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 B C Ca Fe H K Li Mg Mn Na O Si 

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

Structural Groups for minerals in this locality: 
AmphiboleAxiniteBrauniteCalciteClayCorundumGarnetHumiteNoneOlivine
RhodoniteRocksaltSpinelStilpnomelane

20 IMA Minerals at location:
Alleghanyite  (*)Bannisterite  (*)Braunite  (*)Calcite  (*)Clino-suenoite  (*)
Galaxite  (*)Ganophyllite  (*)Hausmannite  (*)Hematite  (*)Jacobsite  (*)
Kutnohorite  (*)Manganosite  (*)Nambulite  (*)Rhodochrosite  (*)Rhodonite  (*)
Spessartine  (*)Stilpnomelane  (*)Tephroite  (*)Tinzenite  (*)Winchite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Alleghanyite  (*)HumiteMn2+5(SiO4)2(OH)2247201077
Bannisterite  (*)Stilpnomelane Clay(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8·nH2O247201020
Braunite  (*)BrauniteMn2+Mn3+6O8(SiO4)2472010483
Calcite  (*)CalciteCa(CO3)247201027770
Clino-suenoite  (*)Amphibole   Mn2+2Mg5Si8O22(OH)2247201057
Galaxite  (*)SpinelMn2+Al2O4247201043
Ganophyllite  (*)Clay(K,Na)xMn2+6(Si,Al)10O24(OH)4·nH2O (x = 1-2; n = 7-11)247201045
Hausmannite  (*)SpinelMn2+Mn3+2O42472010350
Hematite  (*)CorundumFe2O3247201014640
Jacobsite  (*)SpinelMn2+Fe3+2O42472010172
Kutnohorite  (*)NoneCaMn2+(CO3)22472010234
Manganosite  (*)RocksaltMnO247201073
Nambulite  (*)RhodoniteLiMn2+4Si5O14(OH)247201012
Rhodochrosite  (*)CalciteMn(CO3)24720101711
Rhodonite  (*)RhodoniteCaMn3Mn(Si5O15)2472010969
Spessartine  (*)GarnetMn2+3Al2(SiO4)324720101214
Stilpnomelane  (*)Stilpnomelane Clay(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36·nH2O2472010456
Tephroite  (*)OlivineMn2+2(SiO4)2472010240
Tinzenite  (*)AxiniteCa2Mn2+4Al4[B2Si8O30](OH)2247201024
Winchite  (*)Amphibole   (NaCa)(Mg4Al)Si8O22(OH)2247201051


Locality Notes from all Ages at Locality:
Age IDLocality Notes
Scott-RG55_311-0001manganese deposits are intercalated with chert… some of these deposits are closely associated with lenticular bodies or layers of limestone


1 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
Scott-RG55_311-0001247201Midde Triassic to Late TriassicFossil radiolarianAge of deposition     Mn159512Otaniyama Mine, Yamada-machi, Shimohei District, Iwate, JapanOtaniyama mineNakae and Komuro (2005)10.1111/j.1751-3928.2005.tb00253.xRG55_311P. 318

SampleSource LocalityReference URL

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