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:
State Line Chromite District, Lancaster Co., Pennsylvania, USA

Oldest recorded age at locality: 510
Youngest recorded age at locality: 470

mindat Locality ID: 237261
mindat URL: http://www.mindat.org/loc-237261.html

Tectonic Settings:

Total number of sublocalities beneath "State Line Chromite District, Lancaster Co., Pennsylvania, USA": 25
Total number of bottom-level sublocalities: 18

Number of Child Localities: 3
Child Localities:
Colerain Township
Fulton Township
Little Britain Township

Latitude: 39°45'11"N
Longitude: 76°6'10"W
Decimal Degree (lat, lon): 39.753055555556,-76.102777777778
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 B C Ca Cr Cu F Fe H Ir Mg Mn Na Ni O Os P Pb Pd Ru S Si Ti Zn Zr 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AmorphousAragoniteBaddeleyiteBrookiteBruciteCalciteChloriteClayCopperCorrensite
CorundumDigeniteFeldsparGarnetHydrotalciteMalachiteMicaMilleriteNickelineNone
Not in a structural groupOlivinePentlanditePyritePyroxeneQuartzRocksaltRutileSerpentineSmectite-vermiculite
SpinelTalcTourmalineVesuvianite

60 IMA Minerals at location:
Albite  (*)Anatase  (*)Antigorite  (*)Aragonite  (*)Aurichalcite  (*)
Baddeleyite  (*)Brookite  (*)Brucite  (*)Cacoxenite  (*)Calcite  (*)
Chromite  (*)Chrysotile  (*)Clinochlore  (*)Coalingite  (*)Desautelsite  (*)
Digenite  (*)Dolomite  (*)Dozyite  (*)Dravite  (*)Enstatite  (*)
Forsterite  (*)Galena  (*)Gaspéite  (*)Godlevskite  (*)Heazlewoodite  (*)
Hematite  (*)Huntite  (*)Hydromagnesite  (*)Ilmenite  (*)Irarsite  (*)
Iridium  (*)Laurite  (*)Lizardite  (*)Magnesiochromite  (*)Magnesite  (*)
Magnetite  (*)Malachite  (*)Margarite  (*)Maucherite  (*)Mcguinnessite  (*)
Millerite  (*)Nakauriite  (*)Nickeline  (*)Orcelite  (*)Osmium  (*)
Pokrovskite  (*)Polydymite  (*)Pyrite  (*)Pyroaurite  (*)Pyrolusite  (*)
Quartz  (*)Shandite  (*)Talc  (*)Uvarovite  (*)Vermiculite  (*)
Vesuvianite  (*)Vincentite  (*)Vysotskite  (*)Wüstite  (*)Zaratite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Albite  (*)FeldsparNa(AlSi3O8)2263006,2630088803
Anatase  (*)Not in a structural groupTiO212630062162
Antigorite  (*)Serpentine ClayMg3Si2O5(OH)45104707263006,263008,263009,263010,263011,263013,263025708
Aragonite  (*)AragoniteCa(CO3)3263006,263008,2630253250
Aurichalcite  (*)None(Zn,Cu)5(CO3)2(OH)61263006919
Baddeleyite  (*)BaddeleyiteZrO25104701263005238
Brookite  (*)BrookiteTiO25104701263023700
Brucite  (*)BruciteMg(OH)25104705263004,263006,263008,263010,263025462
Cacoxenite  (*)NoneFe3+24AlO6(PO4)17(OH)12·75H2O2263006,263025280
Calcite  (*)CalciteCa(CO3)2263012,26302527770
Chromite  (*)SpinelFe2+Cr2O451047010263004,263006,263008,263009,263010,263012,263019,263021,263023,2630253902
Chrysotile  (*)Serpentine ClayMg3Si2O5(OH)45104707263006,263008,263009,263010,263013,263025,263026951
Clinochlore  (*)Chlorite ClayMg5Al(AlSi3O10)(OH)85104704263006,263009,263010,2630251756
Coalingite  (*)HydrotalciteMg10Fe3+2(CO3)(OH)24·2H2O126300627
Desautelsite  (*)HydrotalciteMg6Mn3+2(CO3)(OH)16·4H2O12630069
Digenite  (*)DigeniteCu1.8S51047012630051027
Dolomite  (*)NoneCaMg(CO3)25104703263006,263023,2630259895
Dozyite  (*)Corrensite ClayMg7Al2(Si4Al2)O15(OH)1212630253
Dravite  (*)TourmalineNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)5104701263010648
Enstatite  (*)PyroxeneMg2Si2O61263025944
Forsterite  (*)OlivineMg2(SiO4)5104703263006,263010,2630251188
Galena  (*)RocksaltPbS510470126300524243
Gaspéite  (*)CalciteNi(CO3)510470126301122
Godlevskite  (*)Pentlandite(Ni,Fe)9S8510470126300540
Heazlewoodite  (*)NoneNi3S25104703263005,263006,263010205
Hematite  (*)CorundumFe2O3126302514640
Huntite  (*)Not in a structural groupCaMg3(CO3)4126300669
Hydromagnesite  (*)NoneMg5(CO3)4(OH)2·4H2O5104705263006,263008,263009,263010,263025341
Ilmenite  (*)CorundumFe2+Ti4+O312630255433
Irarsite  (*)PyriteIrAsS5104701263005154
Iridium  (*)CopperIr5104701263005162
Laurite  (*)PyriteRuS25104701263005226
Lizardite  (*)Serpentine ClayMg3Si2O5(OH)43263006,263008,263025359
Magnesiochromite  (*)SpinelMgCr2O45104703263010,263011,263025311
Magnesite  (*)CalciteMg(CO3)5104707263004,263006,263008,263009,263010,263023,2630251487
Magnetite  (*)SpinelFe2+Fe3+2O45104709263006,263008,263011,263013,263014,263019,263023,263025,26302614899
Malachite  (*)MalachiteCu2(CO3)(OH)2126300612537
Margarite  (*)Mica ClayCaAl2Si2Al2O10(OH)25104701263010168
Maucherite  (*)NoneNi11As85104703263005,263010,263025161
Mcguinnessite  (*)MalachiteCuMg(CO3)(OH)22263006,26300834
Millerite  (*)MilleriteNiS5104703263005,263010,2630251066
Nakauriite  (*)NoneCu8(SO4)4(CO3)(OH)6·48H2O2263006,26300812
Nickeline  (*)NickelineNiAs5104701263005633
Orcelite  (*)NoneNi5-xAs2 (x = 0.25)510470126300536
Osmium  (*)NoneOs5104701263005169
Pokrovskite  (*)MalachiteMg2(CO3)(OH)212630069
Polydymite  (*)SpinelNi2+Ni3+2S45104701263005131
Pyrite  (*)PyriteFeS25104704263006,263010,263016,26302539462
Pyroaurite  (*)HydrotalciteMg6Fe3+2(CO3)(OH)16·4H2O5104703263006,263010,26302589
Pyrolusite  (*)RutileMnO212630063106
Quartz  (*)QuartzSiO25104707263006,263008,263009,263010,263011,263014,26302561156
Shandite  (*)NoneNi3Pb2S2510470126300514
Talc  (*)Clay TalcMg3Si4O10(OH)25104705263004,263006,263010,263012,2630263337
Uvarovite  (*)GarnetCa3Cr2(SiO4)31263025212
Vermiculite  (*)Clay Smectite-vermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4·8H2O2263006,263008652
Vesuvianite  (*)Vesuvianite(Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)1012630251395
Vincentite  (*)NonePd3As510470126300517
Vysotskite  (*)NonePdS510470126300553
Wüstite  (*)RocksaltFeO510470126300574
Zaratite  (*)AmorphousNi3(CO3)(OH)4·4H2O5104703263009,263023,26302556


4 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
podchrome-00498510470Lower Ordovician (490±20 Ma)       Cr28607Jenkins Mine (Jenkins Corner; North Rock Springs), Fulton Township, State Line Chromite District, Lancaster Co., Pennsylvania, USAJenkinsMoiser et al. (2012) USGSSIR2012_5157 
podchrome-00490510470Lower Ordovician (490±20 Ma)       Cr57558Line Pit (Lowe's Chromite Mine), Fulton Township, State Line Chromite District, Lancaster Co., Pennsylvania, USALine PitMoiser et al. (2012) USGSSIR2012_5157 
podchrome-00489510470Lower Ordovician (490±20 Ma)       Cr61999Red Pit Mine, Fulton Township, State Line Chromite District, Lancaster Co., Pennsylvania, USARed PitMoiser et al. (2012) USGSSIR2012_5157 
podchrome-00504510470Lower Ordovician (490±20 Ma)       Cr9665Carter's Chrome Mine (Texas Mine), Little Britain Township, State Line Chromite District, Lancaster Co., Pennsylvania, USACarterMoiser et al. (2012) USGSSIR2012_5157 

SampleSource LocalityReference URL
R050455Texas, Little Britain Township, State Line Chromite District, Lancaster Co., Pennsylvania, USAhttps://rruff.info/R050455
R070228Wood's Chrome Mine (Wood's Mine), Texas, Little Britain Township, State Line Chromite District, Lancaster Co., Pennsylvania, USAhttps://rruff.info/R070228
R100040Wood's Chrome Mine (Wood's Mine), Texas, Little Britain Township, State Line Chromite District, Lancaster Co., Pennsylvania, USAhttps://rruff.info/R100040

All locality data graciously provided by mindat.org

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