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:
Bondholder District, Saguache Co., Colorado, USA

Oldest recorded age at locality: 27.5
Youngest recorded age at locality: 26

mindat Locality ID: 276144
mindat URL: http://www.mindat.org/loc-276144.html

Tectonic Settings:

Total number of sublocalities beneath "Bondholder District, Saguache Co., Colorado, USA": 27
Total number of bottom-level sublocalities: 27

Number of Child Localities: 27
Child Localities:
Allara Tunnel Occurrence
Cascade Mine (New Cascade Tunnel; Bonnez 1-25; Zombie 1-7)
Jackass Mine
Manganese Tunnel Occurrence
Unnamed Bismuth - Silver - Gold Prospect (MRDS - 10013070)
Unnamed Bismuth - Silver - Molybdenum - Gold Prospects (MRDS - 10094536)
Unnamed Copper - Silver - Lead - Zinc Prospect (MRDS - 10013060)
Unnamed Gold - Silver - Lead Prospect (MRDS - 10013057)
Unnamed Gold - Silver - Lead Prospects (MRDS - 10013065)
Unnamed Gold - Silver Prospect (MRDS - 10013062)
Unnamed Gold - Silver Prospect (MRDS - 10013064)
Unnamed Gold - Silver Prospect (MRDS - 10013068)
Unnamed Gold - Silver Prospect (MRDS - 10094538)
Unnamed Gold - Silver Prospect (MRDS - 10094539)
Unnamed Gold - Silver Prospect (MRDS - 10094540)
Unnamed Gold - Silver Prospects (MRDS - 10013055)
Unnamed Gold - Silver Prospects (MRDS - 10013061)
Unnamed Gold - Silver Prospects (MRDS - 10013069)
Unnamed Gold - Silver Prospects (MRDS - 10094534)
Unnamed Gold - Silver Prospects (MRDS - 10094537)
Unnamed Silver - Gold Prospect (MRDS - 10013059)
Unnamed Silver - Gold Prospect (MRDS - 10013063)
Unnamed Silver - Gold Prospect (MRDS - 10094541)
Unnamed Silver - Gold Prospects (MRDS - 10013058)
Unnamed Silver - Gold Prospects (MRDS - 10094535)
Unnamed Silver - Lead Prospect (MRDS - 10013072)
Woodmansee Mine

Latitude: 38°0'1"N
Longitude: 106°57'56"W
Decimal Degree (lat, lon): 38.000277777778,-106.96555555556

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: Fe Pb S Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
NonePyriteRocksaltSphalerite

3 IMA Minerals at location:
Galena  (*)Pyrite  (*)Sphalerite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Galena  (*)RocksaltPbS27.5267195776,195777,195782,195783,195784,195801,19580224243
Pyrite  (*)PyriteFeS2119577739462
Sphalerite  (*)SphaleriteZnS5195776,195777,195782,195801,19580221482



2 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
NAVDAT-4581227.52626.75±0.75   45812    118770Unnamed Gold - Silver - Lead Prospect (MRDS - 10013057), Bondholder District, Saguache Co., Colorado, USA NAVDAT NAVDAT 
NAVDAT-4577926.926.126.5±0.4   45779    118803Unnamed Silver - Gold Prospects (MRDS - 10013058), Bondholder District, Saguache Co., Colorado, USA NAVDAT NAVDAT 


SampleSource LocalityReference URL


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