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:
Mascot Mine (Gorham Lead Mine; Galena King Mine), Gorham, Coos Co., New Hampshire, USA


mindat Locality ID: 5886
mindat URL: http://www.mindat.org/loc-5886.html

Tectonic Settings:

Total number of sublocalities beneath "Mascot Mine (Gorham Lead Mine; Galena King Mine), Gorham, Coos Co., New Hampshire, USA": 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: Ag Al As Au C Ca Cu Fe H K Mg O Pb S Si Ti U Zn 

Elements from minerals reported directly at this locality: Ag Al As Au C Ca Cu Fe H K Mg O Pb S Si Ti U Zn 

Structural Groups for minerals in this locality: 
AcanthiteAragoniteArsenopyriteBaryteBrochantiteCalciteChalcopyriteChloriteClayCopper
DevillineDiasporeGypsumKtenasiteLinariteMalachiteMicaNickelineNoneNot in a structural group
PyriteQuartzRocksaltRutileSphalerite

32 IMA Minerals at location:
Acanthite  (*)Anglesite  (*)Aragonite  (*)Arsenopyrite  (*)Aurichalcite  (*)
Brochantite  (*)Calcite  (*)Cerussite  (*)Chalcopyrite  (*)Chamosite  (*)
Cuprite  (*)Galena  (*)Goethite  (*)Gold  (*)Gypsum  (*)
Hemimorphite  (*)Linarite  (*)Malachite  (*)Metazeunerite  (*)Muscovite  (*)
Posnjakite  (*)Pyrite  (*)Pyrrhotite  (*)Quartz  (*)Ramsbeckite  (*)
Rutile  (*)Schulenbergite  (*)Serpierite  (*)Siderite  (*)Silver  (*)
Smithsonite  (*)Sphalerite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Acanthite  (*)AcanthiteAg2S02793
Anglesite  (*)BarytePb(SO4)02734
Aragonite  (*)AragoniteCa(CO3)03250
Arsenopyrite  (*)ArsenopyriteFeAsS09052
Aurichalcite  (*)None(Zn,Cu)5(CO3)2(OH)60919
Brochantite  (*)BrochantiteCu4(SO4)(OH)601633
Calcite  (*)CalciteCa(CO3)027770
Cerussite  (*)AragonitePb(CO3)04979
Chalcopyrite  (*)ChalcopyriteCuFeS2027198
Chamosite  (*)Chlorite Clay(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)80577
Cuprite  (*)Not in a structural groupCu2O02970
Galena  (*)RocksaltPbS024243
Goethite  (*)DiasporeFeO(OH)07437
Gold  (*)CopperAu030554
Gypsum  (*)GypsumCa(SO4)·2H2O06890
Hemimorphite  (*)Not in a structural groupZn4(Si2O7)(OH)2·H2O01689
Linarite  (*)LinariteCuPb(SO4)(OH)20987
Malachite  (*)MalachiteCu2(CO3)(OH)2012537
Metazeunerite  (*)NoneCu(UO2)2(AsO4)2·8H2O0182
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2017380
Posnjakite  (*)NoneCu4(SO4)(OH)6·H2O0309
Pyrite  (*)PyriteFeS2039462
Pyrrhotite  (*)NickelineFe7S809056
Quartz  (*)QuartzSiO2061156
Ramsbeckite  (*)NoneCu15(SO4)4(OH)22·6H2O068
Rutile  (*)RutileTiO205614
Schulenbergite  (*)Ktenasite(Cu,Zn)7(SO4)2(OH)10·3H2O0142
Serpierite  (*)DevillineCa(Cu,Zn)4(SO4)2(OH)6·3H2O0292
Siderite  (*)CalciteFe(CO3)06417
Silver  (*)CopperAg05186
Smithsonite  (*)CalciteZn(CO3)02473
Sphalerite  (*)SphaleriteZnS021482



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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