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:
Bare Hills Copper Mine (Smith Avenue Copper Mine), Bare Hills, Baltimore Co., Maryland, USA


mindat Locality ID: 28714
mindat URL: http://www.mindat.org/loc-28714.html

Tectonic Settings:

Total number of sublocalities beneath "Bare Hills Copper Mine (Smith Avenue Copper Mine), Bare Hills, Baltimore Co., Maryland, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 39°22'39"N
Longitude: 76°39'54"W
Decimal Degree (lat, lon): 39.3775,-76.665

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 B C Ca Co Cu Fe H K Mg Na O S Si 

Elements from minerals reported directly at this locality: Al B C Ca Co Cu Fe H K Mg Na O S Si 

Structural Groups for minerals in this locality: 
AllophaneAmphiboleAragoniteCalciteChalcanthiteChalcopyriteClayClinozoisiteCovelliteEpidote
FeldsparGarnetGypsumMalachiteMelanteriteNoneNot in a structural groupPyritePyroxeneQuartz
SpinelTalcTourmaline

30 IMA Minerals at location:
Actinolite  (*)Albite  (*)Almandine  (*)Anthophyllite  (*)Aragonite  (*)
Azurite  (*)Bornite  (*)Calcite  (*)Carrollite  (*)Chalcanthite  (*)
Chalcocite  (*)Chalcopyrite  (*)Chrysocolla  (*)Covellite  (*)Cummingtonite  (*)
Cuprite  (*)Enstatite  (*)Epidote  (*)Ferro-hornblende  (*)Gypsum  (*)
Laumontite  (*)Magnetite  (*)Malachite  (*)Melanterite  (*)Microcline  (*)
Pyrite  (*)Quartz  (*)Schorl  (*)Talc  (*)Tremolite  (*)
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
Almandine  (*)GarnetFe2+3Al2(SiO4)302353
Anthophyllite  (*)Amphibole   Mg2Mg5Si8O22(OH)20718
Aragonite  (*)AragoniteCa(CO3)03250
Azurite  (*)Not in a structural groupCu3(CO3)2(OH)205509
Bornite  (*)NoneCu5FeS405516
Calcite  (*)CalciteCa(CO3)027770
Carrollite  (*)SpinelCuCo2S40154
Chalcanthite  (*)ChalcanthiteCu(SO4)·5H2O0925
Chalcocite  (*)NoneCu2S05707
Chalcopyrite  (*)ChalcopyriteCuFeS2027198
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O03531
Covellite  (*)CovelliteCuS04165
Cummingtonite  (*)Amphibole   Mg2Mg5Si8O22(OH)20327
Cuprite  (*)Not in a structural groupCu2O02970
Enstatite  (*)PyroxeneMg2Si2O60944
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)08173
Ferro-hornblende  (*)Amphibole   Ca2(Fe2+4Al)(Si7Al)O22(OH)20271
Gypsum  (*)GypsumCa(SO4)·2H2O06890
Laumontite  (*)Not in a structural groupCaAl2Si4O12·4H2O01271
Magnetite  (*)SpinelFe2+Fe3+2O4014899
Malachite  (*)MalachiteCu2(CO3)(OH)2012537
Melanterite  (*)MelanteriteFe(SO4)·7H2O0915
Microcline  (*)FeldsparK(AlSi3O8)04924
Pyrite  (*)PyriteFeS2039462
Quartz  (*)QuartzSiO2061156
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)02705
Talc  (*)Clay TalcMg3Si4O10(OH)203337
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)202562



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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