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:
Otsu City, Shiga, Japan


mindat Locality ID: 157497
mindat URL: http://www.mindat.org/loc-157497.html

Tectonic Settings:

Total number of sublocalities beneath "Otsu City, Shiga, Japan": 4
Total number of bottom-level sublocalities: 3

Number of Child Localities: 2
Child Localities:
Hira Mine
Tanakami-yama (Tanokami-yama)

Latitude: 34°55'2"N
Longitude: 135°56'22"E
Decimal Degree (lat, lon): 34.917222222222,135.93944444444

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 Be C Ca Ce F Fe H K Li Mg Mn Mo Na Nb O P Pb S Si Sn Ta Th Ti U W Y Zn Zr 

Elements from minerals reported directly at this locality: H O Si U 

Structural Groups for minerals in this locality: 
AllaniteAmorphousBerylCalciteClayColumbiteEpidoteFeldsparFluoriteGadolinite
LazuliteMicaMilariteMolybdeniteMonaziteNickelineNonePyriteQuartzRocksalt
RutileScheeliteSmectite-vermiculiteSphaleriteSpinelTopazTourmalineVivianiteZircon

36 IMA Minerals at location:
Albite  (*)Allanite-(Ce)  (*)Beryl  (*)Cassiterite  (*)Euxenite-(Y)  (*)
Fergusonite-(Y)  (*)Fluorite  (*)Gadolinite-(Y)  (*)Galena  (*)Hingganite-(Y)  (*)
Hübnerite  (*)Jacobsite  (*)Lazulite  (*)Masutomilite  (*)Microcline  (*)
Milarite  (*)Molybdenite  (*)Monazite-(Ce)  (*)Montmorillonite  (*)Muscovite  (*)
Opal  (*)Orthoclase  (*)Pyrite  (*)Pyrolusite  (*)Pyrrhotite  (*)
Quartz  (*)Rutile  (*)Samarskite-(Y)  (*)Schorl  (*)Siderite  (*)
Soddyite  (*)Sphalerite  (*)Topaz  (*)Vivianite  (*)Yttrotantalite-(Y)  (*)
Zircon  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Albite  (*)FeldsparNa(AlSi3O8)1763488803
Allanite-(Ce)  (*)Allanite EpidoteCaCe(Al2Fe2+)[Si2O7][SiO4]O(OH)176348706
Beryl  (*)BerylBe3Al2Si6O181763484286
Cassiterite  (*)RutileSnO2276348,763505171
Euxenite-(Y)  (*)ColumbiteY(NbTi)O6176348414
Fergusonite-(Y)  (*)ScheeliteYNbO4176348196
Fluorite  (*)FluoriteCaF21763489617
Gadolinite-(Y)  (*)GadoliniteY2Fe2+Be2O2(SiO4)2176348163
Galena  (*)RocksaltPbS17634824243
Hingganite-(Y)  (*)GadoliniteBeY(SiO4)(OH)17634855
Hübnerite  (*)ColumbiteMn2+(WO4)176348469
Jacobsite  (*)SpinelMn2+Fe3+2O4176347172
Lazulite  (*)LazuliteMgAl2(PO4)2(OH)2176348232
Masutomilite  (*)MicaKLiAlMn2+(Si3Al)O10(F,OH)217634812
Microcline  (*)FeldsparK(AlSi3O8)1763484924
Milarite  (*)MilariteKCa2(Be2AlSi12)O30·H2O176348156
Molybdenite  (*)MolybdeniteMoS21763485800
Monazite-(Ce)  (*)MonaziteCe(PO4)176348945
Montmorillonite  (*)Clay Smectite-vermiculite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O1763481508
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2276348,7634917380
Opal  (*)AmorphousSiO2·nH2O1763482994
Orthoclase  (*)FeldsparK(AlSi3O8)1763482349
Pyrite  (*)PyriteFeS217634839462
Pyrolusite  (*)RutileMnO21763483106
Pyrrhotite  (*)NickelineFe7S81763489056
Quartz  (*)QuartzSiO2276348,7634961156
Rutile  (*)RutileTiO21763485614
Samarskite-(Y)  (*)ColumbiteYFe3+Nb2O8176348353
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)1763482705
Siderite  (*)CalciteFe(CO3)1763486417
Soddyite  (*)None(UO2)2(SiO4)(H2O)2044
Sphalerite  (*)SphaleriteZnS17634821482
Topaz  (*)TopazAl2SiO4F2276348,763501476
Vivianite  (*)VivianiteFe2+3(PO4)2·8H2O176348636
Yttrotantalite-(Y)  (*)Columbite(Y,U,Fe2+)(Ta,Nb)(O,OH)417634851
Zircon  (*)ZirconZr(SiO4)1763485251



No ages have been assigned to this locality yet.

SampleSource LocalityReference URL
R061008Tanakami-yama (Tanokami-yama), Otsu City, Shiga, Japanhttps://rruff.info/R061008


All locality data graciously provided by mindat.org

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