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:
Cochetopa District (Cochetopa Creek District), Saguache Co., Colorado, USA

Oldest recorded age at locality: 1740
Youngest recorded age at locality: 30

mindat Locality ID: 118475
mindat URL: http://www.mindat.org/loc-118475.html

Tectonic Settings:

Total number of sublocalities beneath "Cochetopa District (Cochetopa Creek District), Saguache Co., Colorado, USA": 30
Total number of bottom-level sublocalities: 30

Number of Child Localities: 30
Child Localities:
Agate; Ricky Placers
Alaska Mine (Alaska Yukon Mine)
Anna Claim
Belle Lode And Freeman Group (Balls Lode)
Black Cat Mine (Black Cat; Protection; Claims: Grand Aspen)
Cochetopa Creek Occurrence
Cochetopa Prospect
Dependable Group And Snowshoe Claim
Elisha Group
Freeman Group
Hathaway Mine (Standard; Claims: Sterling)
Hughes Mine
Kathy Jo And Irishman's Dream Claims (East Mine; Lost Nueve Mine)
La Rue Claims (La Rue No. 2; La Rue No. 22)
M And W Group
Mercury Mine (Smith Mercury Mine)
Ridgeway No. 3 Claim
Sage Hen Claim (Friendly Neighbor)
Shurshot Claims
Silver Plume Claim
Tantalite Prospect
Thornburg Mine (Los Ochos Claims; Los Ochos Mine; Thornburg No. 1 Mine; T-1 Mine)
Union Bell Claim
Unknown Gold Occurrence (MRDS - 10183260)
Unknown Perlite (MRDS - 10167738)
Unknown Thorium Occurrence (MRDS - 10118804)
Unknown Uranium Occurrence (MRDS - 10191380)
Unknown Uranium Occurrence (MRDS - 10289406)
Unnamed Gold Occurrence (MRDS - 10016279)
Unnamed Prospect

Latitude: 38°17'52"N
Longitude: 106°43'28"W
Decimal Degree (lat, lon): 38.297777777778,-106.72444444444

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.

Autunite	Baryte	Brannerite	Chalcopyrite	Clay	Clinozoisite	Copper	Corundum	Covellite	Epidote
Fluorite	Johannite	Malachite	Marcasite	Mica	Nickeline	None	Pyrite	Quartz	Rocksalt
Scheelite	Sphalerite	Tetrahedrite	Zippeite

Autunite ()*	Baryte ()*	Bornite ()*	Brannerite ()*	Chalcocite ()*
Chalcopyrite ()*	Cinnabar ()*	Covellite ()*	Epidote ()*	Fluorite ()*
Galena ()*	Gold ()*	Hematite ()*	Ilsemannite ()*	Johannite ()*
Malachite ()*	Marcasite ()*	Metazeunerite ()*	Muscovite ()*	Pyrite ()*
Pyrrhotite ()*	Quartz ()*	Scheelite ()*	Sphalerite ()*	Tetrahedrite-(Zn) ()*
Torbernite ()*	Uraninite ()*	Uranocircite-II ()*	Uranophane-α ()*	Uranopilite ()*
Zippeite ()*

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 As Au Ba C Ca Cu F Fe H Hg K Mo O P Pb S Sb Si Ti U W Zn

Elements from minerals reported directly at this locality: Al Ca F Fe H O S Si

Structural Groups for minerals in this locality:
Autunite Baryte Brannerite Chalcopyrite Clay Clinozoisite Copper Corundum Covellite Epidote
Fluorite Johannite Malachite Marcasite Mica Nickeline None Pyrite Quartz Rocksalt
Scheelite Sphalerite Tetrahedrite Zippeite

31 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			1	195826	1272
Baryte ()*	Baryte	Ba(SO₄)			2	195808,195826	11547
Bornite ()*	None	Cu₅FeS₄			1	195826	5516
Brannerite ()*	Brannerite	UTi₂O₆	36.78	30	2	195818,195834	248
Chalcocite ()*	None	Cu₂S			1	195806	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂			2	195806,195826	27198
Cinnabar ()*	None	HgS			1	195820	2600
Covellite ()*	Covellite	CuS			1	195806	4165
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	1740	30	0		8173
Fluorite ()*	Fluorite	CaF₂	1740	30	0		9617
Galena ()*	Rocksalt	PbS			1	195806	24243
Gold ()*	Copper	Au			2	195809,195815	30554
Hematite ()*	Corundum	Fe₂O₃	1740	30	0		14640
Ilsemannite ()*	None	Mo₃O₈·nH₂O (?)			1	195826	123
Johannite ()*	Johannite	Cu(UO₂)₂(SO₄)₂(OH)₂·8H₂O			1	195826	69
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂			1	195808	12537
Marcasite ()*	Marcasite	FeS₂			3	195813,195817,195826	5674
Metazeunerite ()*	None	Cu(UO₂)₂(AsO₄)₂·8H₂O			1	195826	182
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂			1	195806	17380
Pyrite ()*	Pyrite	FeS₂			2	195806,195820	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	1740	30	0		9056
Quartz ()*	Quartz	SiO₂			2	195806,195826	61156
Scheelite ()*	Scheelite	Ca(WO₄)			1	195811	4894
Sphalerite ()*	Sphalerite	ZnS			1	195806	21482
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃			1	195806	5317
Torbernite ()*	None	Cu(UO₂)₂(PO₄)₂·12H₂O	36.78	36.6	3	195813,195818,195826	1059
Uraninite ()*	Fluorite	UO₂	36	30	5	195808,195817,195823,195826,195834	2718
Uranocircite-II ()*	None	Ba(UO₂)₂(PO₄)₂·10H₂O	36.78	30	2	195818,195834	89
Uranophane-α ()*	None	Ca(UO₂)₂(SiO₃OH)₂·5H₂O	36.78	36.6	4	195813,195817,195818,195826	890
Uranopilite ()*	None	(UO₂)₆(SO₄)O₂(OH)₆·14H₂O			1	195826	94
Zippeite ()*	Zippeite	K₂[(UO₂)₄(SO₄)₂O₂(OH)₂](H₂O)₄			1	195826	175

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Jen_0000012	Proterozoic Colorado Province 500 km wide bet added to the southern margin of the Archaean Wyoming craton

3 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Source	Sample Num	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
Jen_0000012	1740	1730	1740-1730	Sr-Sr	age of pluton generation	whole rock			Andalusite, Cordierite, Staurolite	Ni, Sr, Zr	118476	Cochetopa Creek Occurrence, Cochetopa District (Cochetopa Creek District), Saguache Co., Colorado, USA	Cochetopa Succession	Černý (1991)	10.1016/0301-9268(91)90111-M	PR51_429	Product of arc magmatism and cannibalistic sedimentation along a convergent margin of the craton
NAVDAT-46185	36.78	36.6	36.69±0.09			sanidine	46185	Sanidine			118553	La Rue Claims (La Rue No. 2; La Rue No. 22), Cochetopa District (Cochetopa Creek District), Saguache Co., Colorado, USA		NAVDAT		NAVDAT
NAVDAT-46125	36	30	33±3				46125				133855	Unnamed Prospect, Cochetopa District (Cochetopa Creek District), Saguache Co., Colorado, USA		NAVDAT		NAVDAT

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...