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:
Ritto City, Shiga, Japan


mindat Locality ID: 270677
mindat URL: http://www.mindat.org/loc-270677.html

Tectonic Settings:

Total number of sublocalities beneath "Ritto City, Shiga, Japan": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Ioi 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 Ba C Ca Fe H K Mn Na O S Si Ti 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AllophaneAmorphousArsenopyriteBaryteBruciteCalciteClayCoronaditeCorundumFeldspar
GarnetHumiteHydrotalciteMarcasiteNickelineNoneOlivineQuartzRhodoniteRocksalt
SpinelWoodwardite

25 IMA Minerals at location:
Alabandite  (*)Albite  (*)Arsenopyrite  (*)Baryte  (*)Bementite  (*)
Birnessite  (*)Cryptomelane  (*)Feitknechtite  (*)Galaxite  (*)Hausmannite  (*)
Jacobsite  (*)Manganosite  (*)Marcasite  (*)Neotocite  (*)Opal  (*)
Pyrochroite  (*)Pyrophanite  (*)Pyrrhotite  (*)Quartz  (*)Rhodochrosite  (*)
Rhodonite  (*)Shigaite  (*)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  (*)RocksaltMnS176352312
Albite  (*)FeldsparNa(AlSi3O8)1763528803
Arsenopyrite  (*)ArsenopyriteFeAsS1763529052
Baryte  (*)BaryteBa(SO4)17635211547
Bementite  (*)ClayMn7Si6O15(OH)8176352173
Birnessite  (*)None(Na,Ca,K)0.6(Mn4+,Mn3+)2O4·1.5H2O176352178
Cryptomelane  (*)CoronaditeK(Mn4+7Mn3+)O16176352599
Feitknechtite  (*)NoneMn3+O(OH)17635219
Galaxite  (*)SpinelMn2+Al2O417635243
Hausmannite  (*)SpinelMn2+Mn3+2O4176352350
Jacobsite  (*)SpinelMn2+Fe3+2O4176352172
Manganosite  (*)RocksaltMnO17635273
Marcasite  (*)MarcasiteFeS21763525674
Neotocite  (*)Allophane(Mn,Fe)SiO3·H2O (?)176352186
Opal  (*)AmorphousSiO2·nH2O1763522994
Pyrochroite  (*)BruciteMn2+(OH)217635256
Pyrophanite  (*)CorundumMn2+TiO3176352244
Pyrrhotite  (*)NickelineFe7S81763529056
Quartz  (*)QuartzSiO217635261156
Rhodochrosite  (*)CalciteMn(CO3)1763521711
Rhodonite  (*)RhodoniteCaMn3Mn(Si5O15)176352969
Shigaite  (*)Woodwardite HydrotalciteMn6Al3(OH)18[Na(H2O)6](SO4)2·6H2O1763527
Sonolite  (*)HumiteMn2+9(SiO4)4(OH)217635250
Spessartine  (*)GarnetMn2+3Al2(SiO4)31763521214
Tephroite  (*)OlivineMn2+2(SiO4)176352240


No ages have been assigned to this locality yet.
SampleSource LocalityReference URL
R080090Ioi Mine, Ritto City, Shiga, Japanhttps://rruff.info/R080090

All locality data graciously provided by mindat.org

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