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:
Tallahassee Creek District, Fremont Co., Colorado, USA

Oldest recorded age at locality: 39
Youngest recorded age at locality: 29

mindat Locality ID: 113132
mindat URL: http://www.mindat.org/loc-113132.html

Tectonic Settings:

Total number of sublocalities beneath "Tallahassee Creek District, Fremont Co., Colorado, USA": 32
Total number of bottom-level sublocalities: 32

Number of Child Localities: 32
Child Localities:
A. E. Jones Claim (Taylor Soda Springs)
Barbara Claims (True Blue Prospect; True Blue No. 1 Claim; Oliver No. 1 Claim)
Cap Rock Mine (Cap Rock 40; Cap Rock Claims)
Chimney Rock Mine
Cottonwood Creek Pegmatite Occurrence
Crescent Deposit
Dickson - Snooper Mine (Ponderosa Ore Body; Snooper-Dickson Mine)
East Big Wash Prospect (Sputnik No. 1)
First Chance Mine
Glen Williams Mine (Williams Mine)
Gunnison School Section Mine (Section 36 Mine?; Colorado Lease 519)
Hansen Ore Body Occurrence
Hilltop Prospect
James - Taylor Lease (Spring Valley Deposit)
Joan 2 Mine (Seattle Chief Mine)
Knob Hill Mine (Knob Hill Ore Body; Knob Hill Os; Dipper Mine; Nob Hill Mine)
Last Chance Mine (Last Chance Pit)
Little Abner Mine (Little Abner No. 1; Little Abney)
Mary L. Group (Mary L. 1-6 Claims)
Oliver Saddle Prospect
Picnic Tree Mine (Picnic Tree Claims; Picnic Tree-Hall; Hall Homestead)
Rainbow - Moose Pit
Section 36 Mine (Glen Williams Mine?)
Smaller Lease
Sunshine Mine (Sunshine Claims; Sunshine No. 2)
Thorn Claims (Thome 1-14; Thorn Homestead Mine; Thome Claims; Thorn 9 And 10)
Unknown Feldspar Occurrence (MRDS - 10017756)
Unknown Uranium (MRDS - 10159682)
Unknown Uranium (MRDS - 10215143)
Unnamed Copper Prospect (MRDS - 10013190)
Unnamed Copper Prospect (MRDS - 10094558)
Unnamed Manganese Prospect (MRDS - 10013189)

Latitude: 38°32'58"N
Longitude: 105°30'35"W
Decimal Degree (lat, lon): 38.549444444444,-105.50972222222

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The 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.

Amorphous	Autunite	Baryte	Calcite	Corundum	Fluorite	Gypsum	Marcasite	Meta-autunite	None
Pyrite	Quartz	Zircon

Autunite ()*	Baryte ()*	Calcite ()*	Coffinite ()*	Gypsum ()*
Hematite ()*	Ilsemannite ()*	Marcasite ()*	Meta-autunite ()*	Metatorbernite ()*
Opal ()*	Pyrite ()*	Quartz ()*	Torbernite ()*	Uraninite ()*

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: Ba C Ca Cu Fe H Mo O P S Si U

Elements from minerals reported directly at this locality: Ca H O P U

Structural Groups for minerals in this locality:
Amorphous Autunite Baryte Calcite Corundum Fluorite Gypsum Marcasite Meta-autunite None
Pyrite Quartz Zircon

15 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Autunite ()*	Autunite	Ca(UO₂)₂(PO₄)₂·10-12H₂O			6	188592,188594,188597,188600,188605,188609	1272
Baryte ()*	Baryte	Ba(SO₄)			1	188598	11547
Calcite ()*	Calcite	Ca(CO₃)			5	188598,188600,188607,188609,188612	27770
Coffinite ()*	Zircon	U(SiO₄)·nH₂O	39	29	19	188589,188596,188597,188598,188599,188600,188601,188602,188603,188604,188605,188606,188607,188608,188609,188611,188612,188613,188614	566
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O			1	188607	6890
Hematite ()*	Corundum	Fe₂O₃	39	29	20	188589,188594,188596,188597,188598,188599,188600,188601,188602,188603,188604,188605,188606,188607,188608,188609,188611,188612,188613,188614	14640
Ilsemannite ()*	None	Mo₃O₈·nH₂O (?)			1	188598	123
Marcasite ()*	Marcasite	FeS₂			1	188598	5674
Meta-autunite ()*	Meta-autunite	Ca(UO₂)₂(PO₄)₂·6H₂O	39	29	0		388
Metatorbernite ()*	None	Cu(UO₂)₂(PO₄)₂·8H₂O			1	188605	443
Opal ()*	Amorphous	SiO₂·nH₂O			2	188590,188608	2994
Pyrite ()*	Pyrite	FeS₂			3	188600,188607,188609	39462
Quartz ()*	Quartz	SiO₂			2	188600,188609	61156
Torbernite ()*	None	Cu(UO₂)₂(PO₄)₂·12H₂O			1	188607	1059
Uraninite ()*	Fluorite	UO₂	39	29	22	188589,188594,188595,188596,188597,188598,188599,188600,188601,188602,188603,188604,188605,188606,188607,188608,188609,188610,188611,188612,188613,188614	2718

1 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	NAVDAT-35649	39	29	34±5					35649						113025	Knob Hill Mine (Knob Hill Ore Body; Knob Hill Os; Dipper Mine; Nob Hill Mine), Tallahassee Creek District, Fremont Co., Colorado, USA		NAVDAT		NAVDAT

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...