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:
Lake Saganaga-Gold Island Prospect, Cook Co., Minnesota, USA

Oldest recorded age at locality: 2732.93
Youngest recorded age at locality: 256.47

mindat Locality ID: 167127
mindat URL: http://www.mindat.org/loc-167127.html

Tectonic Settings:

Total number of sublocalities beneath "Lake Saganaga-Gold Island Prospect, Cook Co., Minnesota, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 48°12'8"N
Longitude: 90°56'21"W
Decimal Degree (lat, lon): 48.202222222222,-90.939166666667
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: Au Ca F O Si 

Elements from minerals reported directly at this locality: Au Ca F O Si 

Structural Groups for minerals in this locality: 
CopperFluoriteNoneQuartz

3 IMA Minerals at location:
Fluorite  (*)Gold  (*)Quartz  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Fluorite  (*)FluoriteCaF22732.93256.4709617
Gold  (*)CopperAu2732.93256.47030554
Quartz  (*)QuartzSiO22732.93256.47061156


11 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-010142613.662613.662613.66Rb-Srage of intrusionwhole rock     167127Lake Saganaga-Gold Island Prospect, Cook Co., Minnesota, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-010152564.722564.722564.72Rb-Srminimum age of intrusionwhole rock     167127Lake Saganaga-Gold Island Prospect, Cook Co., Minnesota, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-010162564.722564.722564.72Rb-Srminimum age of intrusionsericite     167127Lake Saganaga-Gold Island Prospect, Cook Co., Minnesota, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-010172564.722564.722564.72Rb-Srminimum age of intrusionsericite     167127Lake Saganaga-Gold Island Prospect, Cook Co., Minnesota, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-010182732.932732.932732.93Rb-Srminimum age of intrusionsericite     167127Lake Saganaga-Gold Island Prospect, Cook Co., Minnesota, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-010192598.352598.352598.35Rb-Srage not evaluatedmicrocline   Microcline  167127Lake Saganaga-Gold Island Prospect, Cook Co., Minnesota, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-010202722.582722.582722.58Rb-Srminimum age of intrusionmicrocline   Microcline  167127Lake Saganaga-Gold Island Prospect, Cook Co., Minnesota, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-01021256.47256.47256.47Rb-Srminimum age of intrusionsericite     167127Lake Saganaga-Gold Island Prospect, Cook Co., Minnesota, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-010222564.722564.722564.72Rb-Srminimum age of intrusionmicrocline   Microcline  167127Lake Saganaga-Gold Island Prospect, Cook Co., Minnesota, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-01334271324632588±125Rb-Srage of intrusionsericite     167127Lake Saganaga-Gold Island Prospect, Cook Co., Minnesota, USA USGS-Rb-Sr USGS-Rb-Sr 
USGS-Rb-Sr-013352702.652452.652577.65±125Rb-Srage of intrusionk-feldspar     167127Lake Saganaga-Gold Island Prospect, Cook Co., Minnesota, USA USGS-Rb-Sr USGS-Rb-Sr 

SampleSource LocalityReference URL

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