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:
Blake District (Mirage District; Cotton Creek District), Saguache Co., Colorado, USA


mindat Locality ID: 274730
mindat URL: http://www.mindat.org/loc-274730.html

Tectonic Settings:

Total number of sublocalities beneath "Blake District (Mirage District; Cotton Creek District), Saguache Co., Colorado, USA": 21
Total number of bottom-level sublocalities: 21

Number of Child Localities: 21
Child Localities:
Adelaide Claim
Beginner's Luck Claim
Beryl Deposit
Copper Head Claim
Iron King Prospect
Millie Luna Prospect (Iron)
Mountain Lion Mining; Milling And Power Company Claims (Side Line 1 And 2; Cascade; Home Mill Site; Mountain Lion; Hallie; Little Rule; Cora; Lioness)
North Star Claim
Old Bennett Ore Body Occurrence (Major Creek Limonite Mine; Moffat Iron Mine No. 1)
Quarry (MRDS - 10184455)
Ram Lode And Pam Lode (Ramdohrite Lode)
Rio Oro Mine
San Isabel Mining And Milling Company Claims
Steele Canyon Mining; Milling; And Investment Company Claims (Independence; Victor; Princess)
Triple T. Mine
Unknown Fluorine - Fluorite (MRDS - 10240574)
Unknown Gold (MRDS - 10143404)
Unknown Gold (MRDS - 10167892)
Unknown Iron (MRDS - 10119393)
Unnamed Molybdenum Occurrence (MRDS - 10012886)
Unnamed Pegmatite Mine (MRDS - 10013994)

Latitude: 38°7'4"N
Longitude: 105°54'27"W
Decimal Degree (lat, lon): 38.117777777778,-105.9075
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 Ce Cu F Fe H Mn Mo Nb O P Pb S Si Ta Th Ti U Y 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AutuniteChalcopyriteColumbiteCopperFluoriteMolybdeniteMonaziteNonePyriteQuartz
RocksaltSpinelZircon

15 IMA Minerals at location:
Autunite  (*)Chalcopyrite  (*)Coffinite  (*)Euxenite-(Y)  (*)Fluorite  (*)
Galena  (*)Gold  (*)Hausmannite  (*)Molybdenite  (*)Monazite-(Ce)  (*)
Pyrite  (*)Quartz  (*)Samarskite-(Y)  (*)Uraninite  (*)Xenotime-(Y)  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Autunite  (*)AutuniteCa(UO2)2(PO4)2·10-12H2O11956081272
Chalcopyrite  (*)ChalcopyriteCuFeS23195598,195610,19561127198
Coffinite  (*)ZirconU(SiO4)·nH2O1195599566
Euxenite-(Y)  (*)ColumbiteY(NbTi)O62195608,195618414
Fluorite  (*)FluoriteCaF22195600,1956029617
Galena  (*)RocksaltPbS4195598,195604,195610,19561124243
Gold  (*)CopperAu4195598,195605,195610,19561130554
Hausmannite  (*)SpinelMn2+Mn3+2O41195602350
Molybdenite  (*)MolybdeniteMoS211956175800
Monazite-(Ce)  (*)MonaziteCe(PO4)1195608945
Pyrite  (*)PyriteFeS22195610,19561139462
Quartz  (*)QuartzSiO22195600,19560261156
Samarskite-(Y)  (*)ColumbiteYFe3+Nb2O81195608353
Uraninite  (*)FluoriteUO211955992718
Xenotime-(Y)  (*)ZirconY(PO4)2195608,195618939


No ages have been assigned to this locality yet.
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