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:
Ward District, Boulder Co., Colorado, USA

Oldest recorded age at locality: 65
Youngest recorded age at locality: 55

mindat Locality ID: 24808
mindat URL: http://www.mindat.org/loc-24808.html

Tectonic Settings:

Total number of sublocalities beneath "Ward District, Boulder Co., Colorado, USA": 96
Total number of bottom-level sublocalities: 95

Number of Child Localities: 95
Child Localities:
Alaska Tunnel
Alcyone
Alturas
B & M Occurrence
Baxter (Boston; Columbia; Madelaine; Niwot; Sullivan No. 5; Utica Occurrence)
Bertha Occurrence
Beryl No. 1 Prospect
Beryl No. 2 Prospect
Black Jack Mine
Blue Coat Mine
Bondholder
Boston
Buena Ventura
Carl Gardner
Catham Lode Occurrence
Celestial (Celestial Extension; Morning Star Occurrence)
Cleveland
Columbia Vein
Copper Rock Mine
Daisy Occurrence (St. Vrain Placer; Sunny View; Deacon Placer; West Columbia; Tionesta; Onawa; Timberline No. 3; Tempest No. 3)
David Owen
Delaware Group
Dew Drop
Diamond Group
Eldorado Quarry
Emilina Occurrence (Little Giant; Klondike; Connoton; Camera; Mountain Queen; Giles)
Gertrude (President; Mermaid No. 1 & 2; Keystone Placer; Greenback)
Glen Clover
Gold Crystal Occurrence
Gold Hill Beryl Claims
Gold Lake & Manyon Occurrence
Gold Lake Property
Gold Lake Prospect (Diamond Claims; Et Al)
Gold Ring (Gold Ring Tunnel)
Golden Queen Occurrence
Governor Group
Great Western
Greenback Occurrence
Grey Eagle Mine
Grouse
Helen B
Helena
Horshoe Workings
Ideal No. Two
Keystone Placer (Evergreen; London; London Mill Site; London Extension)
Klondike (Klondike No. 1; Klondike Mine; Klondyke)
Last Chance Shaft (Midnight Tunnel Sulphide; Plymouth Rock; Last Chance Tunnel)
Little Alice
Lost Dutchman
Madredoro
Manyon
Modoc
Moon
Mountain Squaw
Mountain View (Orinoco Occurrence)
N R A
National Tungsten
Nelson
Nettie
Nevco
New Brunswick
New Discovery Occurrence
New Rival - Black Rose
Nil Desperandum
None (MRDS - 10263441)
Occidental
Pettie May
Prussian
Queen Mine
Rose
Ruby Occurrence
Smoky Gold United
Snowbound Mine
St Louis
Staughton
Sun And Moon Mine (Desperandum Mine)
Sureshot
Tarbox Tunnel
Three Occurrence
Thunderbolt-Roman Eagle
Tillie Botzel
Tippecanoe
Twin Vein
Union Pacific (U.P.)
Unknown Gold Occurrence (MRDS - 10017606)
Unknown Gold Occurrence (MRDS - 10017607)
Unknown Gold Occurrence (MRDS - 10018300)
Unknown Gold Occurrence (MRDS - 10091306)
Unknown Gold Occurrence (MRDS - 10091358)
Unknown Quartz - Feldspar Occurrence (MRDS - 10117140)
Wa Ba Na Occurrence (Tillie Butzel; Pennsylvania; Washington Irving; Nil Desperandum; Cleveland; Sun And Moon; St Louis; Grace; Burlington; Hidden Treasure; Delaware Group; Oceanic; Collins)
Washington Irving
White Cloud & Helena Mines
White Raven Mine
Wolf Tongue

Latitude: 40°4'40"N
Longitude: 105°26'44"W
Decimal Degree (lat, lon): 40.077777777778,-105.44555555556

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	Baryte	Beryl	Calcite	Chalcopyrite	Columbite	Copper	Jalpaite	Lillianite	Malachite
Melonite	Molybdenite	None	Not in a structural group	Polybasite	Pyrite	Quartz	Rocksalt	Sphalerite	Stibnite
Tetrahedrite

Acanthite ()*	Altaite ()*	Azurite ()*	Baryte ()*	Beryl ()*
Bornite ()*	Calcite ()*	Cervelleite ()*	Chalcocite ()*	Chalcopyrite ()*
Coloradoite ()*	Copper ()*	Dawsonite ()*	Fizélyite ()*	Galena ()*
Gold ()*	Hessite ()*	Hübnerite ()*	Jalpaite ()*	Krennerite ()*
Malachite ()*	Molybdenite ()*	Pearceite ()*	Petzite ()*	Polybasite ()*
Pyrite ()*	Quartz ()*	Samarskite-(Y) ()*	Siderite ()*	Silver ()*
Sphalerite ()*	Stibnite ()*	Sylvanite ()*	Tennantite-(Fe) ()*

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 As Au Ba Be C Ca Cu Fe H Hg Mn Mo Na Nb O Pb S Sb Si Te W Y Zn

Elements from minerals reported directly at this locality: Al C Cu Fe H Mo Na Nb O S Y

Structural Groups for minerals in this locality:
Acanthite Baryte Beryl Calcite Chalcopyrite Columbite Copper Jalpaite Lillianite Malachite
Melonite Molybdenite None Not in a structural group Polybasite Pyrite Quartz Rocksalt Sphalerite Stibnite
Tetrahedrite

34 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			3	185171,185202,185257	2793
Altaite ()*	Rocksalt	PbTe	61	57	2	185226,185231	489
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂			1	185182	5509
Baryte ()*	Baryte	Ba(SO₄)			1	185257	11547
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈			2	185169,185170	4286
Bornite ()*	None	Cu₅FeS₄	65	55	0		5516
Calcite ()*	Calcite	Ca(CO₃)			1	185257	27770
Cervelleite ()*	None	Ag₄TeS			1	185202	42
Chalcocite ()*	None	Cu₂S			1	185232	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂			7	185167,185181,185202,185221,185232,185234,185257	27198
Coloradoite ()*	Sphalerite	HgTe			1	185202	169
Copper ()*	Copper	Cu			1	185167	3846
Dawsonite ()*	None	NaAl(CO₃)(OH)₂	65	55	0		90
Fizélyite ()*	Lillianite	Ag₅Pb₁₄Sb₂₁S₄₈			2	185176,185202	54
Galena ()*	Rocksalt	PbS			2	185171,185257	24243
Gold ()*	Copper	Au			29	185166,185167,185168,185178,185183,185186,185189,185190,185192,185198,185201,185202,185208,185210,185218,185221,185225,185232,185234,185236,185239,185248,185249,185250,185251,185252,185254,185256,185257	30554
Hessite ()*	None	Ag₂Te			2	185202,185231	804
Hübnerite ()*	Columbite	Mn²⁺(WO₄)			1	185177	469
Jalpaite ()*	Jalpaite	Ag₃CuS₂			1	185257	116
Krennerite ()*	None	Au₃AgTe₈	61	57	1	185226	111
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂			1	185182	12537
Molybdenite ()*	Molybdenite	MoS₂	65	55	0		5800
Pearceite ()*	Polybasite	[Ag₉CuS₄][(Ag,Cu)₆(As,Sb)₂S₇]			1	185171	249
Petzite ()*	None	Ag₃AuTe₂	61	57	2	185226,185231	409
Polybasite ()*	Polybasite	[Ag₉CuS₄][(Ag,Cu)₆(Sb,As)₂S₇]			1	185171	716
Pyrite ()*	Pyrite	FeS₂			9	185166,185167,185181,185186,185202,185221,185232,185234,185257	39462
Quartz ()*	Quartz	SiO₂	61	57	11	185167,185169,185170,185181,185186,185202,185221,185226,185232,185234,185257	61156
Samarskite-(Y) ()*	Columbite	YFe³⁺Nb₂O₈	65	55	0		353
Siderite ()*	Calcite	Fe(CO₃)			2	185171,185257	6417
Silver ()*	Copper	Ag			4	185168,185171,185221,185257	5186
Sphalerite ()*	Sphalerite	ZnS			2	185232,185257	21482
Stibnite ()*	Stibnite	Sb₂S₃			1	185172	3418
Sylvanite ()*	Melonite	AgAuTe₄			1	185231	337
Tennantite-(Fe) ()*	Tetrahedrite	Cu₆(Cu₄Fe₂)As₄S₁₃			1	185257	1803

2 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-16628	65	55	60±5					16628						110280	Modoc, Ward District, Boulder Co., Colorado, USA		NAVDAT		NAVDAT
	NAVDAT-32719	61	57	59±2					32719						110316	New Rival - Black Rose, Ward District, Boulder Co., Colorado, USA		NAVDAT		NAVDAT

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...