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:
Mt Ohsa (Ohsayama; Osayama), Niimi City, Okayama, Japan


mindat Locality ID: 19553
mindat URL: http://www.mindat.org/loc-19553.html

Tectonic Settings:

Total number of sublocalities beneath "Mt Ohsa (Ohsayama; Osayama), Niimi City, Okayama, 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 Ca Cr F Fe H K Mg Na O Si Sr Ti Zr 

Elements from minerals reported directly at this locality: Al Ca Cr F Fe H K Mg Na O Si Sr Ti Zr 

Structural Groups for minerals in this locality: 
AmphiboleAnalcimeClayClinozoisiteEpidoteFeldsparGarnetLawsoniteMicaNatrolite
NoneOlivinePectolitePrehnitePyroxeneRutileSpinelStilpnomelaneThomsoniteTitanite
VesuvianiteZircon

28 IMA Minerals at location:
Actinolite  (*)Albite  (*)Analcime  (*)Diopside  (*)Epidote  (*)
Forsterite  (*)Glaucophane  (*)Grossular  (*)Jadeite  (*)Kosmochlor  (*)
Lawsonite  (*)Magnetite  (*)Muscovite  (*)Natrolite  (*)Omphacite  (*)
Pectolite  (*)Phlogopite  (*)Prehnite  (*)Rutile  (*)Spinel  (*)
Stilpnomelane  (*)Stronalsite  (*)Thomsonite-Ca  (*)Titanite  (*)Tremolite  (*)
Uvarovite  (*)Vesuvianite  (*)Zircon  (*)
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)203419
Albite  (*)FeldsparNa(AlSi3O8)08803
Analcime  (*)AnalcimeNa(AlSi2O6)·H2O01627
Diopside  (*)PyroxeneCaMgSi2O604135
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)08173
Forsterite  (*)OlivineMg2(SiO4)01188
Glaucophane  (*)Amphibole   Na2(Mg3Al2)Si8O22(OH)20286
Grossular  (*)GarnetCa3Al2(SiO4)301544
Jadeite  (*)PyroxeneNaAlSi2O60154
Kosmochlor  (*)PyroxeneNaCr3+Si2O6013
Lawsonite  (*)LawsoniteCaAl2(Si2O7)(OH)2·H2O0121
Magnetite  (*)SpinelFe2+Fe3+2O4014899
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2017380
Natrolite  (*)NatroliteNa2(Si3Al2)O10·2H2O01236
Omphacite  (*)Pyroxene(Ca,Na)(Mg,Fe,Al)Si2O60229
Pectolite  (*)PectoliteNaCa2Si3O8(OH)0363
Phlogopite  (*)Mica ClayKMg3(AlSi3O10)(OH)202273
Prehnite  (*)PrehniteCa2Al(Si3Al)O10(OH)201898
Rutile  (*)RutileTiO205614
Spinel  (*)SpinelMgAl2O401934
Stilpnomelane  (*)Stilpnomelane Clay(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36·nH2O0456
Stronalsite  (*)NoneNa2SrAl4Si4O16010
Thomsonite-Ca  (*)ThomsoniteNaCa2(Al5Si5)O20·6H2O0452
Titanite  (*)TitaniteCaTi(SiO4)O04899
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)202562
Uvarovite  (*)GarnetCa3Cr2(SiO4)30212
Vesuvianite  (*)Vesuvianite(Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)1001395
Zircon  (*)ZirconZr(SiO4)05251


No ages have been assigned to this locality yet.
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All locality data graciously provided by mindat.org

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