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:
Tokushima City, Tokushima, Japan


mindat Locality ID: 257389
mindat URL: http://www.mindat.org/loc-257389.html

Tectonic Settings:

Total number of sublocalities beneath "Tokushima City, Tokushima, Japan": 2
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Bizan (Otakiyama)

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 Ca Fe H K Mg Mn Na O S Si Ti 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AmphiboleBrauniteClayClinozoisiteCorundumEpidoteGarnetHalotrichiteMicaNone
PyroxeneQuartzRutileSpinel

16 IMA Minerals at location:
Actinolite  (*)Aegirine  (*)Almandine  (*)Barroisite  (*)Braunite  (*)
Epidote  (*)Glaucophane  (*)Hematite  (*)Ilmenite  (*)Magnesio-riebeckite  (*)
Magnetite  (*)Muscovite  (*)Pickeringite  (*)Piemontite  (*)Quartz  (*)
Rutile  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Actinolite  (*)Amphibole   Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)21766223419
Aegirine  (*)PyroxeneNaFe3+Si2O61766221022
Almandine  (*)GarnetFe2+3Al2(SiO4)31766222353
Barroisite  (*)Amphibole   (NaCa)(Mg3Al2)(Si7Al)O22(OH)217662249
Braunite  (*)BrauniteMn2+Mn3+6O8(SiO4)176623483
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)1766228173
Glaucophane  (*)Amphibole   Na2(Mg3Al2)Si8O22(OH)2176622286
Hematite  (*)CorundumFe2O317662214640
Ilmenite  (*)CorundumFe2+Ti4+O31766225433
Magnesio-riebeckite  (*)Amphibole   Na2(Mg3Fe3+2)Si8O22(OH)217662293
Magnetite  (*)SpinelFe2+Fe3+2O417662214899
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2276622,7662317380
Pickeringite  (*)HalotrichiteMgAl2(SO4)4·22H2O176622265
Piemontite  (*)EpidoteCa2(Al2Mn3+)[Si2O7][SiO4]O(OH)276622,76623260
Quartz  (*)QuartzSiO2276622,7662361156
Rutile  (*)RutileTiO21766225614


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

All locality data graciously provided by mindat.org

All age data...

Other copyright data...