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:
Gunma, Japan


mindat Locality ID: 15095
mindat URL: http://www.mindat.org/loc-15095.html

Tectonic Settings:

Total number of sublocalities beneath "Gunma, Japan": 58
Total number of bottom-level sublocalities: 40

Number of Child Localities: 26
Child Localities:
Akagi Volcano
Akaginemura
Annaka City
Atago Mine
Bamba Mine
Fujioka
Gunma-tetsuzan (Gunma Iron Mine)
Kanra District
Katashina
Kawaba Village
Kiryu City
Kurosakaishi Mine
Kurumazawa Mine
Kusatsu
Midori City
Minakami
Motojuku District
Nakanoyama Mine
Nishinomaki Mine
Numata City
Okumanza Hot Spring
Sanyoh Mine
Shima Mine
Shimonita
Tano District
Yamabishi Mine

Latitude: 36°41'25"N
Longitude: 139°3'47"E
Decimal Degree (lat, lon): 36.690277777778,139.06305555556
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: Ag Al As Au B Ba Be Bi C Ca Cl Cu Fe H K Mg Mn N Na Ni O P Pb S Sb Si Sr Te Ti V W Zn Zr 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AcanthiteAllophaneAlumohydrocalciteAluniteAmorphousAnalcimeAndalusiteApatiteAragoniteArdennite
ArsenicArsenopyriteBaryteBerthieriteBruciteCalciteCancrinite-sodaliteCarminiteChalcopyriteClay
ClinozoisiteColumbiteCopperCoronaditeCorundumDescloiziteDiasporeDigeniteDmisteinbergiteEpidote
FeldsparGarnetGypsumHumiteKaoliniteMicaMilleriteMordeniteNatroliteNickeline
NoneNot in a structural groupOlivineOrpimentPhenakitePolybasitePrehnitePumpellyitePyritePyrochlore
PyrophyllitePyroxeneQuartzRhodoniteRocksaltRutileSmectite-vermiculiteSodaliteSphaleriteSpinel
StibniteSulphurTetradymiteTetrahedriteTridymiteZircon

130 IMA Minerals at location:
Acanthite  (*)Adamite  (*)Alabandite  (*)Alacránite  (*)Albite  (*)
Alleghanyite  (*)Alumohydrocalcite  (*)Alunite  (*)Ammonioleucite  (*)Analcime  (*)
Andradite  (*)Anorthite  (*)Antimony  (*)Ardennite-(As)  (*)Ardennite-(V)  (*)
Arsenopyrite  (*)Augite  (*)Baryte  (*)Bayldonite  (*)Bementite  (*)
Berthierite  (*)Beudantite  (*)Bornite  (*)Calcite  (*)Carminite  (*)
Chalcopyrite  (*)Chlorargyrite  (*)Clinojimthompsonite  (*)Corundum  (*)Cosalite  (*)
Crandallite  (*)Cymrite  (*)Dawsonite  (*)Descloizite  (*)Digenite  (*)
Dmisteinbergite  (*)Dolomite  (*)Epidote  (*)Epistilbite  (*)Freibergite  (*)
Galaxite  (*)Galena  (*)Goethite  (*)Gold  (*)Graţianite  (*)
Grossular  (*)Gypsum  (*)Hausmannite  (*)Hedleyite  (*)Helvine  (*)
Hematite  (*)Huangite  (*)Hübnerite  (*)Ilmenite  (*)Imogolite  (*)
Jacobsite  (*)Jadeite  (*)Jarosite  (*)Jimboite  (*)Joséite-A  (*)
Joséite-B  (*)Kaolinite  (*)Kermesite  (*)Laumontite  (*)Leucite  (*)
Magnetite  (*)Manganite  (*)Manganosite  (*)Melanotekite  (*)Miargyrite  (*)
Millerite  (*)Mimetite  (*)Montmorillonite  (*)Mottramite  (*)Muscovite  (*)
Nagashimalite  (*)Natroalunite  (*)Nickeline  (*)Nordstrandite  (*)Opal  (*)
Orpiment  (*)Gersdorffite-Pa3  (*)Pararealgar  (*)Philipsbornite  (*)Phlogopite  (*)
Phosphohedyphane  (*)Polybasite  (*)Polydymite  (*)Prehnite  (*)Pumpellyite-(Al)  (*)
Pyrite  (*)Pyrochroite  (*)Pyrolusite  (*)Pyromorphite  (*)Pyrophanite  (*)
Pyrophyllite  (*)Pyroxmangite  (*)Quartz  (*)Realgar  (*)Rhodochrosite  (*)
Rhodonite  (*)Roscoelite  (*)Rutile  (*)Schwertmannite  (*)Scolecite  (*)
Scorodite  (*)Segnitite  (*)Siderite  (*)Silver  (*)Sonolite  (*)
Spessartine  (*)Sphalerite  (*)Stibiconite  (*)Stibnite  (*)Sulphur  (*)
Suzukiite  (*)Tephroite  (*)Tetrahedrite-(Zn)  (*)Todorokite  (*)Tridymite  (*)
Vaesite  (*)Vanadinite  (*)Violarite  (*)Wairakite  (*)Wakabayashilite  (*)
Willemite  (*)Wiserite  (*)Witherite  (*)Woodhouseite  (*)Zircon  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Acanthite  (*)AcanthiteAg2S274542,745442793
Adamite  (*)AndalusiteZn2(AsO4)(OH)174542254
Alabandite  (*)RocksaltMnS1174532,74549,74550,74551,74552,74557,74558,74559,74561,74567,74572312
Alacránite  (*)Not in a structural groupAs8S917456818
Albite  (*)FeldsparNa(AlSi3O8)1745758803
Alleghanyite  (*)HumiteMn2+5(SiO4)2(OH)2574549,74558,74561,74562,7456777
Alumohydrocalcite  (*)AlumohydrocalciteCaAl2(CO3)2(OH)4·4H2O17453546
Alunite  (*)NoneKAl3(SO4)2(OH)6174571966
Ammonioleucite  (*)Analcime(NH4)(AlSi2O6)274534,745351
Analcime  (*)AnalcimeNa(AlSi2O6)·H2O274535,745751627
Andradite  (*)GarnetCa3Fe3+2(SiO4)3274531,745461534
Anorthite  (*)FeldsparCa(Al2Si2O8)1745261036
Antimony  (*)ArsenicSb174542363
Ardennite-(As)  (*)ArdenniteMn2+4Al4(AlMg)(AsO4)(SiO4)2(Si3O10)(OH)617458134
Ardennite-(V)  (*)ArdenniteMn2+4Al4(AlMg)(VO4)(SiO4)2(Si3O10)(OH)617458011
Arsenopyrite  (*)ArsenopyriteFeAsS274542,745709052
Augite  (*)Pyroxene(Ca,Mg,Fe)2Si2O6274526,745272060
Baryte  (*)BaryteBa(SO4)674537,74549,74554,74561,74568,7457611547
Bayldonite  (*)NoneCu3PbO(AsO3OH)2(OH)2174542172
Bementite  (*)ClayMn7Si6O15(OH)8374550,74558,74567173
Berthierite  (*)BerthieriteFeSb2S4174576343
Beudantite  (*)AlunitePbFe3+3(AsO4)(SO4)(OH)6374542,74543,74570413
Bornite  (*)NoneCu5FeS4274542,745495516
Calcite  (*)CalciteCa(CO3)374535,74549,7456627770
Carminite  (*)CarminitePbFe3+2(AsO4)2(OH)2174542178
Chalcopyrite  (*)ChalcopyriteCuFeS2374535,74542,7454427198
Chlorargyrite  (*)RocksaltAgCl1745421382
Clinojimthompsonite  (*)NoneMg5Si6O16(OH)21745644
Corundum  (*)CorundumAl2O31745731797
Cosalite  (*)NonePb2Bi2S5174557344
Crandallite  (*)AluniteCaAl3(PO4)(PO3OH)(OH)6174571310
Cymrite  (*)NoneBa(Si,Al)4(O,OH)8·H2O17454946
Dawsonite  (*)NoneNaAl(CO3)(OH)217453590
Descloizite  (*)DescloizitePbZn(VO4)(OH)174570378
Digenite  (*)DigeniteCu1.8S1745491027
Dmisteinbergite  (*)DmisteinbergiteCa(Al2Si2O8)1745434
Dolomite  (*)NoneCaMg(CO3)21745359895
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)1745668173
Epistilbite  (*)MordeniteCa3[Si18Al6O48]·16H2O174531138
Freibergite  (*)TetrahedriteAg6[Cu4Fe2]Sb4S12174542663
Galaxite  (*)SpinelMn2+Al2O4374550,74558,7456143
Galena  (*)RocksaltPbS374542,74570,7457624243
Goethite  (*)DiasporeFeO(OH)1745427437
Gold  (*)CopperAu17454430554
Graţianite  (*)BerthieriteMnBi2S41745572
Grossular  (*)GarnetCa3Al2(SiO4)31745311544
Gypsum  (*)GypsumCa(SO4)·2H2O1745286890
Hausmannite  (*)SpinelMn2+Mn3+2O4774532,74548,74549,74550,74557,74561,74582350
Hedleyite  (*)TetradymiteBi7Te3174557104
Helvine  (*)Sodalite Cancrinite-sodaliteBe3Mn2+4(SiO4)3S174549237
Hematite  (*)CorundumFe2O317456614640
Huangite  (*)AluniteCa0.5Al3(SO4)2(OH)61745715
Hübnerite  (*)ColumbiteMn2+(WO4)174557469
Ilmenite  (*)CorundumFe2+Ti4+O31745275433
Imogolite  (*)AllophaneAl2SiO3(OH)41745257
Jacobsite  (*)SpinelMn2+Fe3+2O4474548,74549,74561,74562172
Jadeite  (*)PyroxeneNaAlSi2O6174574154
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)61745372228
Jimboite  (*)NoneMn2+3(BO3)21745613
Joséite-A  (*)TetradymiteBi4TeS217455750
Joséite-B  (*)TetradymiteBi4Te2S17455786
Kaolinite  (*)Clay KaoliniteAl2Si2O5(OH)41745735591
Kermesite  (*)NoneSb2OS2174576230
Laumontite  (*)Not in a structural groupCaAl2Si4O12·4H2O274531,745661271
Leucite  (*)AnalcimeK(AlSi2O6)174535233
Magnetite  (*)SpinelFe2+Fe3+2O4274526,7456514899
Manganite  (*)RutileMn3+O(OH)174542770
Manganosite  (*)RocksaltMnO474532,74549,74557,7456173
Melanotekite  (*)NonePb2Fe3+2O2(Si2O7)17457022
Miargyrite  (*)NoneAgSbS2174542300
Millerite  (*)MilleriteNiS1745351066
Mimetite  (*)ApatitePb5(AsO4)3Cl274542,745701107
Montmorillonite  (*)Clay Smectite-vermiculite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O1745301508
Mottramite  (*)DescloizitePbCu(VO4)(OH)174570362
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)217456617380
Nagashimalite  (*)NoneBa4(V3+,Ti)4(O,OH)2[B2Si8O27]Cl1745492
Natroalunite  (*)AluniteNaAl3(SO4)2(OH)6174571128
Nickeline  (*)NickelineNiAs174557633
Nordstrandite  (*)NoneAl(OH)317453564
Opal  (*)AmorphousSiO2·nH2O1745712994
Orpiment  (*)OrpimentAs2S3174568511
Gersdorffite-Pa3  (*)PyriteNiAsS174549767
Pararealgar  (*)NoneAs4S417456857
Philipsbornite  (*)AlunitePbAl3(AsO4)(AsO3OH)(OH)617454251
Phlogopite  (*)Mica ClayKMg3(AlSi3O10)(OH)21745272273
Phosphohedyphane  (*)ApatiteCa2Pb3(PO4)3Cl17457071
Polybasite  (*)Polybasite[Ag9CuS4][(Ag,Cu)6(Sb,As)2S7]174544716
Polydymite  (*)SpinelNi2+Ni3+2S4174581131
Prehnite  (*)PrehniteCa2Al(Si3Al)O10(OH)21745661898
Pumpellyite-(Al)  (*)PumpellyiteCa2Al3(Si2O7)(SiO4)(OH,O)2·H2O274575,7458019
Pyrite  (*)PyriteFeS2774535,74542,74544,74559,74568,74571,7457639462
Pyrochroite  (*)BruciteMn2+(OH)217454956
Pyrolusite  (*)RutileMnO2274542,745573106
Pyromorphite  (*)ApatitePb5(PO4)3Cl274542,745701725
Pyrophanite  (*)CorundumMn2+TiO3374557,74561,74562244
Pyrophyllite  (*)Clay PyrophylliteAl2Si4O10(OH)2174573771
Pyroxmangite  (*)NoneMn2+SiO3274558,74562147
Quartz  (*)QuartzSiO21174535,74536,74539,74540,74542,74549,74557,74568,74570,74571,7457661156
Realgar  (*)NoneAsS174568712
Rhodochrosite  (*)CalciteMn(CO3)1274532,74548,74549,74550,74552,74557,74558,74560,74561,74562,74567,745821711
Rhodonite  (*)RhodoniteCaMn3Mn(Si5O15)974548,74549,74551,74552,74557,74558,74559,74561,74572969
Roscoelite  (*)MicaKV3+2(Si3Al)O10(OH)2174549253
Rutile  (*)RutileTiO21745715614
Schwertmannite  (*)CoronaditeFe3+16O16(OH)9.6(SO4)3.2·10H2O17453737
Scolecite  (*)NatroliteCa(Si3Al2)O10·3H2O174531390
Scorodite  (*)NoneFe3+(AsO4)·2H2O1745421153
Segnitite  (*)AlunitePbFe3+3(AsO4)(AsO3OH)(OH)6174542134
Siderite  (*)CalciteFe(CO3)1745356417
Silver  (*)CopperAg1745425186
Sonolite  (*)HumiteMn2+9(SiO4)4(OH)2374560,74561,7456250
Spessartine  (*)GarnetMn2+3Al2(SiO4)3574549,74557,74558,74561,745621214
Sphalerite  (*)SphaleriteZnS674542,74544,74557,74559,74570,7457621482
Stibiconite  (*)PyrochloreSb3+Sb5+2O6(OH)174576446
Stibnite  (*)StibniteSb2S3274568,745763418
Sulphur  (*)SulphurS274554,745712045
Suzukiite  (*)NoneBaV4+Si2O71745494
Tephroite  (*)OlivineMn2+2(SiO4)574548,74549,74557,74558,74561240
Tetrahedrite-(Zn)  (*)TetrahedriteCu6(Cu4Zn2)Sb4S13274549,745765317
Todorokite  (*)None(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12·3-4H2O174542433
Tridymite  (*)TridymiteSiO2174527458
Vaesite  (*)PyriteNiS2174535106
Vanadinite  (*)ApatitePb5(VO4)3Cl174570605
Violarite  (*)SpinelFeNi2S4174535380
Wairakite  (*)AnalcimeCa(Si4Al2)O12·2H2O274543,7456673
Wakabayashilite  (*)None(As,Sb)6As4S1417456816
Willemite  (*)PhenakiteZn2SiO4174570303
Wiserite  (*)NoneMn2+14(B2O5)4(OH)8·(Si,Mg)(O,OH)4Cl474549,74550,74561,7458215
Witherite  (*)AragoniteBa(CO3)174557251
Woodhouseite  (*)AluniteCaAl3(SO4)(PO4)(OH)617457162
Zircon  (*)ZirconZr(SiO4)1745655251


No ages have been assigned to this locality yet.
SampleSource LocalityReference URL
R060104Tatarazawa, Fujioka, Gunma, Japanhttps://rruff.info/R060104
R130087Katashina, Gunma, Japanhttps://rruff.info/R130087
R061075Katashina, Gunma, Japanhttps://rruff.info/R061075

All locality data graciously provided by mindat.org

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