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:
La Plata District (Winfield District), Chaffee Co., Colorado, USA

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

mindat Locality ID: 49780
mindat URL: http://www.mindat.org/loc-49780.html

Tectonic Settings:

Total number of sublocalities beneath "La Plata District (Winfield District), Chaffee Co., Colorado, USA": 17
Total number of bottom-level sublocalities: 17

Number of Child Localities: 17
Child Localities:
Banker Mine
Clear Creek Occurrence
Douglas Platt Prospect
Fortune
Last Dollar Prospect
Little Guy Mine (Crescent Mine)
Middle Mountain Complex
Middle Mountain Prospect
Mike Rabbit Prospect
Molybdenum Occurrence (MRDS - 10018285)
North Point (Eastern Star; Unitah Lode Occurrence)
Rockdale Mine
Sea Chest Occurrence (Glinka)
Swiss Boy (Silver Crop Occurrence)
Tasmania
Uranus Mine
Winfield Peak Prospect

Latitude: 38°58'33"N
Longitude: 106°27'"W
Decimal Degree (lat, lon): 38.975833333333,-106.45

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.

Acanthite	Apatite	Arsenic	Baryte	Beryl	Calcite	Chalcopyrite	Chalcostibite	Clay	Columbite
Corundum	Fluorite	Meneghinite	Mica	Molybdenite	Monazite	None	Polybasite	Pyrite	Quartz
Rocksalt	Rutile	Sphalerite	Stibnite	Titanite	Topaz	Zircon

Acanthite ()*	Aikinite ()*	Anglesite ()*	Beryl ()*	Bismuth ()*
Bismuthinite ()*	Bornite ()*	Chalcocite ()*	Chalcopyrite ()*	Columbite-(Mn) ()*
Emplectite ()*	Ferrimolybdite ()*	Fluorapatite ()*	Fluorite ()*	Galena ()*
Hematite ()*	Ilmenite ()*	Molybdenite ()*	Monazite-(Ce) ()*	Muscovite ()*
Polybasite ()*	Pyrite ()*	Pyrophanite ()*	Quartz ()*	Rhodochrosite ()*
Rutile ()*	Sphalerite ()*	Titanite ()*	Topaz ()*	Xenotime-(Y) ()*
Zircon ()*

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: Ag Al Be Bi C Ca Ce Cu F Fe H K Mn Mo Nb O P Pb S Sb Si Ti Y Zn Zr

Elements from minerals reported directly at this locality: Ag Bi Cu O Pb S

Structural Groups for minerals in this locality:
Acanthite Apatite Arsenic Baryte Beryl Calcite Chalcopyrite Chalcostibite Clay Columbite
Corundum Fluorite Meneghinite Mica Molybdenite Monazite None Polybasite Pyrite Quartz
Rocksalt Rutile Sphalerite Stibnite Titanite Topaz Zircon

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
Acanthite ()*	Acanthite	Ag₂S	39	29	0		2793
Aikinite ()*	Meneghinite	CuPbBiS₃	39	29	0		315
Anglesite ()*	Baryte	Pb(SO₄)	39	29	0		2734
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	39	29	4	185466,185473,185477,185482	4286
Bismuth ()*	Arsenic	Bi	39	29	0		1966
Bismuthinite ()*	Stibnite	Bi₂S₃	39	29	5	185466,185468,185473,185474,185482	1935
Bornite ()*	None	Cu₅FeS₄			1	185474	5516
Chalcocite ()*	None	Cu₂S			1	185474	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂			1	185474	27198
Columbite-(Mn) ()*	Columbite	Mn²⁺Nb₂O₆			1	185472	289
Emplectite ()*	Chalcostibite	CuBiS₂			1	185474	246
Ferrimolybdite ()*	None	Fe³⁺₂(Mo⁶⁺O₄)₃·7H₂O			3	185471,185475,185477	345
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F			1	185472	2740
Fluorite ()*	Fluorite	CaF₂	39	29	4	185466,185472,185473,185482	9617
Galena ()*	Rocksalt	PbS			1	185466	24243
Hematite ()*	Corundum	Fe₂O₃			1	185474	14640
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃			1	185472	5433
Molybdenite ()*	Molybdenite	MoS₂	39	29	8	185466,185471,185473,185475,185476,185477,185478,185482	5800
Monazite-(Ce) ()*	Monazite	Ce(PO₄)			1	185472	945
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂			1	185466	17380
Polybasite ()*	Polybasite	[Ag₉CuS₄][(Ag,Cu)₆(Sb,As)₂S₇]			1	185466	716
Pyrite ()*	Pyrite	FeS₂			4	185466,185471,185474,185482	39462
Pyrophanite ()*	Corundum	Mn²⁺TiO₃			1	185472	244
Quartz ()*	Quartz	SiO₂	39	29	7	185466,185471,185473,185474,185475,185477,185482	61156
Rhodochrosite ()*	Calcite	Mn(CO₃)			1	185466	1711
Rutile ()*	Rutile	TiO₂			1	185472	5614
Sphalerite ()*	Sphalerite	ZnS			1	185474	21482
Titanite ()*	Titanite	CaTi(SiO₄)O			1	185472	4899
Topaz ()*	Topaz	Al₂SiO₄F₂	39	29	2	185473,185482	1476
Xenotime-(Y) ()*	Zircon	Y(PO₄)			1	185472	939
Zircon ()*	Zircon	Zr(SiO₄)			1	185472	5251

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-19685	39	29	34±5					19685						110823	Middle Mountain Prospect, La Plata District (Winfield District), Chaffee Co., Colorado, USA		NAVDAT		NAVDAT

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...