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:
St Andreasberg, St Andreasberg District, Harz, Lower Saxony, Germany

Oldest recorded age at locality: 138.3
Youngest recorded age at locality: 133.1

mindat Locality ID: 1812
mindat URL: http://www.mindat.org/loc-1812.html

Tectonic Settings: Continental Arc

Total number of sublocalities beneath "St Andreasberg, St Andreasberg District, Harz, Lower Saxony, Germany": 12
Total number of bottom-level sublocalities: 12

Number of Child Localities: 12
Child Localities:
Abendröthe Mine
Bergmannstrost Mine
Catharina Neufang Mine
Felicitas Mine
Franz-August Mine
Fünf Bücher Mosis Mine
Gnade Gottes Mine
Juliane-Charlotte Mine (Juliane Mine)
Prinz Maximilian Mine
Roter Bär Mine
Samson Mine
Silver Smelter Slag Locality

Latitude: 51°42'41"N
Longitude: 10°30'43"E
Decimal Degree (lat, lon): 51.711388888889,10.511944444444
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 Bi C Ca Cl Co Cu F Fe H Hg K La Mg Mn Na Ni O P Pb Pd S Sb Se Si Sr Ti U V Y Zn Zr 

Elements from minerals reported directly at this locality: Ag Al As Bi C Ca Co Cu Fe H K Mg Mn Na Ni O Pb S Sb Si Ti V Y Zn Zr 

Structural Groups for minerals in this locality: 
AcanthiteAdeliteAllargentumAllophaneAluniteAmorphousAmphiboleAnalcimeAndalusiteApatite
ApophylliteAragoniteArsenicArseniosideriteArsenoliteArsenopyriteBaryteBerthieriteBournoniteBrochantite
CalciteCaledoniteCarminiteChalcopyriteChalcostibiteChloriteClayClinozoisiteCobaltiteCopper
CorundumCovelliteCubaniteDevillineEpidoteFeldsparFluoriteGadoliniteGarnetGmelinite
GypsumHarmotomeHeulanditeKaoliniteKobelliteKtenasiteLöllingiteLepidocrociteLinariteMalachite
MarcasiteMicaMilleriteMiniumMixiteNatroliteNickelineNolaniteNoneNot in a structural group
OrpimentOwyheeitePerovskitePharmacosideritePolybasitePrehnitePyritePyrochlorePyroxeneQuartz
RocksaltRutileSkutteruditeSmectite-vermiculiteSphaleriteSpinelStibniteStilbiteStillwateriteSulphur
TalcTetrahedriteThomsoniteTitaniteUllmanniteVivianiteWurtziteXanthoconiteZircon

178 IMA Minerals at location:
Acanthite  (*)Actinolite  (*)Adamite  (*)Adelite  (*)Agardite-(La)  (*)
Albite  (*)Analcime  (*)Andradite  (*)Anglesite  (*)Anhydrite  (*)
Annabergite  (*)Antimony  (*)Aragonite  (*)Argentopyrite  (*)Arsenic  (*)
Arseniosiderite  (*)Arsenolite  (*)Arsenopyrite  (*)Azurite  (*)Baryte  (*)
Berthierite  (*)Berzelianite  (*)Bindheimite  (*)Bohdanowiczite  (*)Bornite  (*)
Boulangerite  (*)Bournonite  (*)Breithauptite  (*)Brianyoungite  (*)Brochantite  (*)
Calcite  (*)Caledonite  (*)Carminite  (*)Cervantite  (*)Chalcocite  (*)
Chalcopyrite  (*)Chalcostibite  (*)Chervetite  (*)Chlorargyrite  (*)Chrysocolla  (*)
Claudetite  (*)Clausthalite  (*)Clinochlore  (*)Cobaltite  (*)Conichalcite  (*)
Copper  (*)Covellite  (*)Cubanite  (*)Cuprite  (*)Datolite  (*)
Devilline  (*)Dickite  (*)Dolomite  (*)Duftite  (*)Dyscrasite  (*)
Epidote  (*)Erythrite  (*)Eucairite  (*)Ferroselite  (*)Fluorapophyllite-(K)  (*)
Fluorite  (*)Galena  (*)Galenobismutite  (*)Gmelinite-Na  (*)Gold  (*)
Grossular  (*)Guanajuatite  (*)Guérinite  (*)Gypsum  (*)Häggite  (*)
Harmotome  (*)Hematite  (*)Heulandite-Ca  (*)Hörnesite  (*)Hydrocerussite  (*)
Hydrozincite  (*)Jamesonite  (*)Jarosite  (*)Johannsenite  (*)Kainosite-(Y)  (*)
Kaolinite  (*)Karelianite  (*)Kermesite  (*)Klockmannite  (*)Köttigite  (*)
Laumontite  (*)Lautite  (*)Lead  (*)Lepidocrocite  (*)Linarite  (*)
Löllingite  (*)Magnetite  (*)Malachite  (*)Marcasite  (*)Maucherite  (*)
Mertieite-II  (*)Miargyrite  (*)Millerite  (*)Minium  (*)Montmorillonite  (*)
Muscovite  (*)Nacrite  (*)Natrolite  (*)Naumannite  (*)Nickeline  (*)
Nickelskutterudite  (*)Nolanite  (*)Nontronite  (*)Opal  (*)Orpiment  (*)
Osarizawaite  (*)Owyheeite  (*)Gersdorffite-Pa3  (*)Pararealgar  (*)Parasymplesite  (*)
Pharmacolite  (*)Pharmacosiderite  (*)Phaunouxite  (*)Picropharmacolite  (*)Polybasite  (*)
Posnjakite  (*)Prehnite  (*)Proustite  (*)Pyrargyrite  (*)Pyrite  (*)
Pyrolusite  (*)Pyromorphite  (*)Pyrostilpnite  (*)Pyrrhotite  (*)Quartz  (*)
Rammelsbergite  (*)Rauenthalite  (*)Realgar  (*)Retgersite  (*)Rhodochrosite  (*)
Richelsdorfite  (*)Rosasite  (*)Rösslerite  (*)Safflorite  (*)Samsonite  (*)
Saponite  (*)Schulenbergite  (*)Schultenite  (*)Scolecite  (*)Scorodite  (*)
Segnitite  (*)Semseyite  (*)Serpierite  (*)Siderite  (*)Silver  (*)
Skutterudite  (*)Smithsonite  (*)Smythite  (*)Sphalerite  (*)Stephanite  (*)
Sternbergite  (*)Stetefeldtite  (*)Stibarsen  (*)Stibiconite  (*)Stibnite  (*)
Stilbite-Ca  (*)Stilleite  (*)Strontianite  (*)Sulphur  (*)Talc  (*)
Tennantite-(Fe)  (*)Tetrahedrite-(Zn)  (*)Thomsonite-Ca  (*)Tiemannite  (*)Titanite  (*)
Ullmannite  (*)Umangite  (*)Uraninite  (*)Valentinite  (*)Witherite  (*)
Xanthoconite  (*)Zircon  (*)Zoisite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Acanthite  (*)AcanthiteAg2S138.3133.1359920,59924,599282793
Actinolite  (*)Amphibole   Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)2138.3133.103419
Adamite  (*)AndalusiteZn2(AsO4)(OH)138.3133.10254
Adelite  (*)AdeliteCaMg(AsO4)(OH)138.3133.1013
Agardite-(La)  (*)MixiteLaCu2+6(AsO4)3(OH)6·3H2O138.3133.115992333
Albite  (*)FeldsparNa(AlSi3O8)138.3133.11599208803
Analcime  (*)AnalcimeNa(AlSi2O6)·H2O138.3133.1359920,59924,599281627
Andradite  (*)GarnetCa3Fe3+2(SiO4)3138.3133.1259919,599281534
Anglesite  (*)BarytePb(SO4)138.3133.102734
Anhydrite  (*)Not in a structural groupCa(SO4)138.3133.1259926,599281588
Annabergite  (*)VivianiteNi3(AsO4)2·8H2O138.3133.1159923445
Antimony  (*)ArsenicSb138.3133.1559919,59920,59924,59925,59928363
Aragonite  (*)AragoniteCa(CO3)138.3133.103250
Argentopyrite  (*)CubaniteAgFe2S3138.3133.1259920,5992853
Arsenic  (*)ArsenicAs138.3133.1359920,59924,59928379
Arseniosiderite  (*)ArseniosideriteCa2Fe3+3O2(AsO4)3·3H2O138.3133.10194
Arsenolite  (*)ArsenoliteAs2O3138.3133.1159920231
Arsenopyrite  (*)ArsenopyriteFeAsS138.3133.11599209052
Azurite  (*)Not in a structural groupCu3(CO3)2(OH)2138.3133.11599265509
Baryte  (*)BaryteBa(SO4)138.3133.1259923,5992711547
Berthierite  (*)BerthieriteFeSb2S4138.3133.10343
Berzelianite  (*)NoneCu2-xSe (x ≈ 0.12)138.3133.115992766
Bindheimite  (*)PyrochlorePb2Sb5+2O7138.3133.10450
Bohdanowiczite  (*)NoneAgBiSe2138.3133.115992741
Bornite  (*)NoneCu5FeS4138.3133.105516
Boulangerite  (*)NonePb5Sb4S11138.3133.10843
Bournonite  (*)BournoniteCuPbSbS3138.3133.1359919,59922,599281089
Breithauptite  (*)NickelineNiSb138.3133.1459919,59920,59926,59928175
Brianyoungite  (*)NoneZn3(CO3)(OH)4138.3133.1079
Brochantite  (*)BrochantiteCu4(SO4)(OH)6138.3133.1259926,599281633
Calcite  (*)CalciteCa(CO3)138.3133.1659919,59920,59921,59923,59927,5992827770
Caledonite  (*)CaledoniteCu2Pb5(SO4)3(CO3)(OH)6138.3133.10359
Carminite  (*)CarminitePbFe3+2(AsO4)2(OH)2138.3133.10178
Cervantite  (*)NoneSb3+Sb5+O4138.3133.10352
Chalcocite  (*)NoneCu2S138.3133.105707
Chalcopyrite  (*)ChalcopyriteCuFeS2138.3133.1259926,5992827198
Chalcostibite  (*)ChalcostibiteCuSbS2138.3133.1159919162
Chervetite  (*)NonePb2V5+2O7138.3133.107
Chlorargyrite  (*)RocksaltAgCl138.3133.11599281382
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O138.3133.11599263531
Claudetite  (*)NoneAs2O3138.3133.115992835
Clausthalite  (*)RocksaltPbSe138.3133.1259921,59927281
Clinochlore  (*)Chlorite ClayMg5Al(AlSi3O10)(OH)8138.3133.101756
Cobaltite  (*)CobaltiteCoAsS138.3133.10966
Conichalcite  (*)AdeliteCaCu(AsO4)(OH)138.3133.10363
Copper  (*)CopperCu138.3133.103846
Covellite  (*)CovelliteCuS138.3133.11599264165
Cubanite  (*)Cubanite WurtziteCuFe2S3138.3133.1359919,59920,59928802
Cuprite  (*)Not in a structural groupCu2O138.3133.11599262970
Datolite  (*)GadoliniteCaB(SiO4)(OH)138.3133.1159919498
Devilline  (*)DevillineCaCu4(SO4)2(OH)6·3H2O138.3133.1159928366
Dickite  (*)Clay KaoliniteAl2Si2O5(OH)4138.3133.10651
Dolomite  (*)NoneCaMg(CO3)2138.3133.109895
Duftite  (*)AdelitePbCu(AsO4)(OH)138.3133.1159927220
Dyscrasite  (*)AllargentumAg3+xSb1-x (x ≈ 0.2)138.3133.1559919,59920,59924,59925,59928180
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)138.3133.108173
Erythrite  (*)VivianiteCo3(AsO4)2·8H2O138.3133.10814
Eucairite  (*)NoneCuAgSe138.3133.115992754
Ferroselite  (*)MarcasiteFeSe2138.3133.115992751
Fluorapophyllite-(K)  (*)ApophylliteKCa4Si8O20F·8H2O138.3133.1159928303
Fluorite  (*)FluoriteCaF2138.3133.1559920,59922,59924,59925,599289617
Galena  (*)RocksaltPbS138.3133.1459918,59920,59927,5992824243
Galenobismutite  (*)KobellitePbBi2S4138.3133.10192
Gmelinite-Na  (*)GmeliniteNa4(Si8Al4)O24·11H2O138.3133.1259922,5992825
Gold  (*)CopperAu138.3133.115992730554
Grossular  (*)GarnetCa3Al2(SiO4)3138.3133.101544
Guanajuatite  (*)StibniteBi2Se3138.3133.115992737
Guérinite  (*)NoneCa5(AsO3OH)2(AsO4)2·9H2O138.3133.115992831
Gypsum  (*)GypsumCa(SO4)·2H2O138.3133.106890
Häggite  (*)NoneV3+V4+O2(OH)3138.3133.115992717
Harmotome  (*)HarmotomeBa2(Si12Al4)O32·12H2O138.3133.1259919,59928290
Hematite  (*)CorundumFe2O3138.3133.115992714640
Heulandite-Ca  (*)Heulandite(Ca,Na,K)5(Si27Al9)O72·26H2O138.3133.1159928246
Hörnesite  (*)VivianiteMg3(AsO4)2·8H2O138.3133.10103
Hydrocerussite  (*)NonePb3(CO3)2(OH)2138.3133.1159928201
Hydrozincite  (*)NoneZn5(CO3)2(OH)6138.3133.101066
Jamesonite  (*)NonePb4FeSb6S14138.3133.10784
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)6138.3133.11599202228
Johannsenite  (*)PyroxeneCaMnSi2O6138.3133.1073
Kainosite-(Y)  (*)NoneCa2Y2(SiO3)4(CO3)·H2O138.3133.1099
Kaolinite  (*)Clay KaoliniteAl2Si2O5(OH)4138.3133.105591
Karelianite  (*)CorundumV2O3138.3133.115992717
Kermesite  (*)NoneSb2OS2138.3133.1159928230
Klockmannite  (*)CovelliteCu5.2Se6138.3133.115992763
Köttigite  (*)VivianiteZn3(AsO4)2·8H2O138.3133.1060
Laumontite  (*)Not in a structural groupCaAl2Si4O12·4H2O138.3133.101271
Lautite  (*)NoneCuAsS138.3133.1032
Lead  (*)CopperPb138.3133.10192
Lepidocrocite  (*)LepidocrociteFe3+O(OH)138.3133.10581
Linarite  (*)LinariteCuPb(SO4)(OH)2138.3133.1159926987
Löllingite  (*)LöllingiteFeAs2138.3133.1159922762
Magnetite  (*)SpinelFe2+Fe3+2O4138.3133.1014899
Malachite  (*)MalachiteCu2(CO3)(OH)2138.3133.115992612537
Marcasite  (*)MarcasiteFeS2138.3133.105674
Maucherite  (*)NoneNi11As8138.3133.1159927161
Mertieite-II  (*)StillwateritePd8Sb2.5As0.5138.3133.115992744
Miargyrite  (*)NoneAgSbS2138.3133.1259920,59928300
Millerite  (*)MilleriteNiS138.3133.11599271066
Minium  (*)MiniumPb2+2Pb4+O4138.3133.10247
Montmorillonite  (*)Clay Smectite-vermiculite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O138.3133.101508
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2138.3133.1017380
Nacrite  (*)Clay KaoliniteAl2Si2O5(OH)4138.3133.10112
Natrolite  (*)NatroliteNa2(Si3Al2)O10·2H2O138.3133.101236
Naumannite  (*)Not in a structural groupAg2Se138.3133.1159927192
Nickeline  (*)NickelineNiAs138.3133.1159923633
Nickelskutterudite  (*)Skutterudite Perovskite(Ni,Co,Fe)As3138.3133.10176
Nolanite  (*)NolaniteV3+8Fe3+2O14(OH)2138.3133.115992719
Nontronite  (*)Clay Smectite-vermiculiteNa0.3Fe3+2(Si,Al)4O10(OH)2·nH2O138.3133.1159927471
Opal  (*)AmorphousSiO2·nH2O138.3133.102994
Orpiment  (*)OrpimentAs2S3138.3133.10511
Osarizawaite  (*)AlunitePb(Al2Cu2+)(SO4)2(OH)6138.3133.1064
Owyheeite  (*)OwyheeiteAg3Pb10Sb11S28138.3133.1089
Gersdorffite-Pa3  (*)PyriteNiAsS138.3133.1259923,59927767
Pararealgar  (*)NoneAs4S4138.3133.1057
Parasymplesite  (*)VivianiteFe2+3(AsO4)2·8H2O138.3133.10124
Pharmacolite  (*)GypsumCa(AsO3OH)·2H2O138.3133.1159928105
Pharmacosiderite  (*)PharmacosideriteKFe3+4(AsO4)3(OH)4·6-7H2O138.3133.10428
Phaunouxite  (*)NoneCa3(AsO4)2·11H2O138.3133.115992814
Picropharmacolite  (*)NoneCa4Mg(AsO3OH)2(AsO4)2·11H2O138.3133.115992899
Polybasite  (*)Polybasite[Ag9CuS4][(Ag,Cu)6(Sb,As)2S7]138.3133.1159928716
Posnjakite  (*)NoneCu4(SO4)(OH)6·H2O138.3133.10309
Prehnite  (*)PrehniteCa2Al(Si3Al)O10(OH)2138.3133.101898
Proustite  (*)NoneAg3AsS3138.3133.1359920,59921,59928733
Pyrargyrite  (*)NoneAg3SbS3138.3133.1659918,59919,59920,59921,59924,599281425
Pyrite  (*)PyriteFeS2138.3133.1039462
Pyrolusite  (*)RutileMnO2138.3133.103106
Pyromorphite  (*)ApatitePb5(PO4)3Cl138.3133.11599281725
Pyrostilpnite  (*)XanthoconiteAg3SbS3138.3133.1459919,59922,59924,5992884
Pyrrhotite  (*)NickelineFe7S8138.3133.1459918,59919,59920,599289056
Quartz  (*)QuartzSiO2138.3133.115992861156
Rammelsbergite  (*)LöllingiteNiAs2138.3133.10233
Rauenthalite  (*)NoneCa3(AsO4)2·10H2O138.3133.115992823
Realgar  (*)NoneAsS138.3133.1159918712
Retgersite  (*)NoneNi(SO4)·6H2O138.3133.115992355
Rhodochrosite  (*)CalciteMn(CO3)138.3133.101711
Richelsdorfite  (*)NoneCa2Cu5Sb5+(AsO4)4(OH)6Cl·6H2O138.3133.1259921,5992857
Rosasite  (*)MalachiteCuZn(CO3)(OH)2138.3133.1159928454
Rösslerite  (*)NoneMg(AsO3OH)·7H2O138.3133.115992816
Safflorite  (*)LöllingiteCoAs2138.3133.1159923317
Samsonite  (*)NoneAg4MnSb2S6138.3133.11599287
Saponite  (*)Clay Smectite-vermiculite(Ca,Na)0.3(Mg,Fe)3(Si,Al)4O10(OH)2·4H2O138.3133.10301
Schulenbergite  (*)Ktenasite(Cu,Zn)7(SO4)2(OH)10·3H2O138.3133.10142
Schultenite  (*)NonePb(AsO3OH)138.3133.115992030
Scolecite  (*)NatroliteCa(Si3Al2)O10·3H2O138.3133.10390
Scorodite  (*)NoneFe3+(AsO4)·2H2O138.3133.11599211153
Segnitite  (*)AlunitePbFe3+3(AsO4)(AsO3OH)(OH)6138.3133.10134
Semseyite  (*)NonePb9Sb8S21138.3133.10165
Serpierite  (*)DevillineCa(Cu,Zn)4(SO4)2(OH)6·3H2O138.3133.1259919,59928292
Siderite  (*)CalciteFe(CO3)138.3133.106417
Silver  (*)CopperAg138.3133.1259920,599285186
Skutterudite  (*)Skutterudite PerovskiteCoAs3138.3133.1159923531
Smithsonite  (*)CalciteZn(CO3)138.3133.11599282473
Smythite  (*)None(Fe,Ni)3+xS4 (x ≈ 0-0.3)138.3133.115992777
Sphalerite  (*)SphaleriteZnS138.3133.1259918,5992721482
Stephanite  (*)NoneAg5SbS4138.3133.1359920,59924,59928586
Sternbergite  (*)CubaniteAgFe2S3138.3133.1062
Stetefeldtite  (*)PyrochloreAg2Sb2(O,OH)7138.3133.1022
Stibarsen  (*)ArsenicSbAs138.3133.115992848
Stibiconite  (*)PyrochloreSb3+Sb5+2O6(OH)138.3133.10446
Stibnite  (*)StibniteSb2S3138.3133.1259918,599193418
Stilbite-Ca  (*)StilbiteNaCa4(Si27Al9)O72·28H2O138.3133.1159920268
Stilleite  (*)SphaleriteZnSe138.3133.11599277
Strontianite  (*)AragoniteSr(CO3)138.3133.1159928589
Sulphur  (*)SulphurS138.3133.102045
Talc  (*)Clay TalcMg3Si4O10(OH)2138.3133.103337
Tennantite-(Fe)  (*)TetrahedriteCu6(Cu4Fe2)As4S13138.3133.11599281803
Tetrahedrite-(Zn)  (*)TetrahedriteCu6(Cu4Zn2)Sb4S13138.3133.1259919,599285317
Thomsonite-Ca  (*)ThomsoniteNaCa2(Al5Si5)O20·6H2O138.3133.10452
Tiemannite  (*)SphaleriteHgSe138.3133.115992783
Titanite  (*)TitaniteCaTi(SiO4)O138.3133.104899
Ullmannite  (*)UllmanniteNiSbS138.3133.1159927293
Umangite  (*)NoneCu3Se2138.3133.115992771
Uraninite  (*)FluoriteUO2138.3133.11599272718
Valentinite  (*)NoneSb2O3138.3133.1159920369
Witherite  (*)AragoniteBa(CO3)138.3133.1159926251
Xanthoconite  (*)XanthoconiteAg3AsS3138.3133.115992889
Zircon  (*)ZirconZr(SiO4)138.3133.105251
Zoisite  (*)EpidoteCa2Al3[Si2O7][SiO4]O(OH)138.3133.101025


1 Ages assigned to this locality:

Excel IDMax Age (Ma)Min Age (Ma)Age as listed in referenceDating MethodAge InterpretPrioritized?Sample SourceSample NumRun NumAge from other LocalityDated MineralMinerals explicitely stated as having this ageAge applies to these ElementsMinDat Locality IDDated Locality (Max Age)Location as listed in referenceReferenceReference DOIReference IDAge Notes
Kristen002289138.3133.1135.7±2.640Ar/39Ar adularia     6009Bergmannstrost Mine, St Andreasberg, St Andreasberg District, Harz, Lower Saxony, GermanyBergmannstrost VeinMertz et al. (1989)10.1007/BF00206715MD24_9 

SampleSource LocalityReference URL
R050440St Andreasberg, St Andreasberg District, Harz, Lower Saxony, Germanyhttps://rruff.info/R050440
R070286St Andreasberg, St Andreasberg District, Harz, Lower Saxony, Germanyhttps://rruff.info/R070286
R060998Samson Mine, St Andreasberg, St Andreasberg District, Harz, Lower Saxony, Germanyhttps://rruff.info/R060998

All locality data graciously provided by mindat.org

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