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:
Northgate District, Jackson Co., Colorado, USA

Oldest recorded age at locality: 1730
Youngest recorded age at locality: 1690

mindat Locality ID: 6213
mindat URL: http://www.mindat.org/loc-6213.html

Tectonic Settings:

Total number of sublocalities beneath "Northgate District, Jackson Co., Colorado, USA": 28
Total number of bottom-level sublocalities: 27

Number of Child Localities: 27
Child Localities:
Badger Occurrence
Baker Pit
Big Pay Group
Camp Creek Claims (Alcoa Shaft)
Copper Ridge
Fluorine Vein Properties
Fluorspar Vein Properties (Cherry Open Pit; Penber; Northgate Fluorspar; Gero; Northgate Mine; Fluorspar Claims; Springer Open Pit; Fluorspar Mine; Fluorspar Vein)
Fourney Mine (Riggs; Unknown Vermiculite Occurrence MRDS - 10142432)
Gero Mine
Hankins & Follett Prospects
Kings Canyon (Pinkham Canyon Mine)
Kramer Mines
Northgate No. 2
Penber (Penbar)
Quaintance; Riggs Occurrence
Resort Claim
Springer Pit
Unknown Copper Occurrence (MRDS - 10239650)
Unknown Copper Occurrence (MRDS - 10239709)
Unknown Fluorine - Fluorite Deposit
Unknown Fluorine - Fluorite Occurrence (MRDS - 10288530)
Unknown Molybdenum Occurrence (MRDS - 10016637)
Unknown Molybdenum Occurrence (MRDS - 10215344)
Unnamed Vermiculite Prospect
Village Belle Mine (Village Bell Mine)
Western Fluorspar Corporation Mine
Whale Pit

Latitude: 40°56'13"N
Longitude: 106°16'3"W
Decimal Degree (lat, lon): 40.936944444444,-106.2675
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 C Ca Cu F Fe H Mg Mo Na O S Si 

Elements from minerals reported directly at this locality: C Ca Fe H Mg O Si 

Structural Groups for minerals in this locality: 
AllophaneAmphiboleCalciteChalcopyriteClayFluoriteGypsumMalachiteMelanteriteMolybdenite
NonePyriteQuartzSmectite-vermiculite

15 IMA Minerals at location:
Actinolite  (*)Calcite  (*)Chalcopyrite  (*)Chrysocolla  (*)Fluorite  (*)
Gypsum  (*)Ilsemannite  (*)Malachite  (*)Melanterite  (*)Molybdenite  (*)
Montmorillonite  (*)Pyrite  (*)Quartz  (*)Tremolite  (*)Vermiculite  (*)
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)21730169003419
Calcite  (*)CalciteCa(CO3)17301690027770
Chalcopyrite  (*)ChalcopyriteCuFeS2119047027198
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O3190459,190470,1904843531
Fluorite  (*)FluoriteCaF27190460,190465,190466,190468,190473,190479,1904859617
Gypsum  (*)GypsumCa(SO4)·2H2O11904856890
Ilsemannite  (*)NoneMo3O8·nH2O (?)1190485123
Malachite  (*)MalachiteCu2(CO3)(OH)23190459,190470,19048412537
Melanterite  (*)MelanteriteFe(SO4)·7H2O1190485915
Molybdenite  (*)MolybdeniteMoS23190470,190479,1904815800
Montmorillonite  (*)Clay Smectite-vermiculite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O11904651508
Pyrite  (*)PyriteFeS23190466,190479,19048539462
Quartz  (*)QuartzSiO24190465,190466,190479,19048561156
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)211904832562
Vermiculite  (*)Clay Smectite-vermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4·8H2O4190467,190474,190475,190483652


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
USGS-Rb-Sr-07118173016901710±20Rb-Srage of intrusionwhole rock     114624Unknown Fluorine - Fluorite Occurrence (MRDS - 10288530), Northgate District, Jackson Co., Colorado, USA USGS-Rb-Sr USGS-Rb-Sr 

SampleSource LocalityReference URL

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