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:
Sugarloaf District, Boulder Co., Colorado, USA

Oldest recorded age at locality: 1704.13
Youngest recorded age at locality: 46

mindat Locality ID: 66751
mindat URL: http://www.mindat.org/loc-66751.html

Tectonic Settings:

Total number of sublocalities beneath "Sugarloaf District, Boulder Co., Colorado, USA": 83
Total number of bottom-level sublocalities: 82

Number of Child Localities: 82
Child Localities:
Alpine Horn
Amalban Thief
Baile's Lode
Big Horn Shaft (Caribou)
Big John Mine
Bismark
Boulder Mine
Butch
Cabin Occurrence (Matchless No. 1 & 2; Blue Jay; Minnie)
Corundum Occurrence (J. B. Johnson; Broome Company; Brooks; Olympic; Honolulu; 2nd Ext. W. Of 4th Of July; Yellow Jacket)
David Mine
Dew Drop Occurrence
Dodge
Dorthy-Katie Mines
Doss
Doughty Placer (Rood Placer; Agricultural Land; Carbonate; Graham Placer)
Empress Mine & Post Boy Tunnel
Eureka Tungsten Mining Company
Fair One
Fairmount
Fowler And Wells Ranch
G. W. Horton Mill Site Occurrence (Church Placer; Clear Water Placer; Ravens View; Horseshoe Placer; Hubbard Placer)
Golden Chest (Canton; Culebra Occurrence)
Golden Crown Group
Golden Eagle Occurrence
Hallie A Tungsten
Hidden Treasure Occurrence (Horace Newman Placer; Ravens View; Four Mile; Churchplacer; Horton Mill Site; Horton Placer; Blue Wing; B S X X; German Prince)
Hideaway No. 1
High Grade
Hillside
Irene
J. Albine
John W. Fittslease Brodie
Katie - Dorothy Mines
Krakajak Number 1 Lode
Krakajak Number 2 Lode
Las Animas Mine
Last Chance Occurrence (Last Chance No. 1)
Leonidas (Olympia; Maymil A.; Park Placer)
Little Belle & W. Extension Occurrence
Livingston Group
Lucky Lady
Lugar Occurrence
Marion Mill
Melbourne Mine
Milan Mine
Mishap (Princess Eulalia; Crackerjack; Crete; Gold Coin; Gold Leaf Occurrence)
Monday Lode
Monitor Tunnel
Montezuma
Mystery Group
N. G. Mitts Tungsten Prospect No. 1
N. G. Mitts Tungsten Prospect No. 2
National No. 2
Nederland
Ni-Wot
Night Shade
Nil Sine Numine
Nyanza
Overseer
Palladium (Architect; Starlight; Chrysolite Occurrence)
Phillips (Meadow Lark; Lee S.; Sur No. 209; Storm Occurrence)
Poormans Relief (Poormans Shaft; Poormans Tunnel)
Potato Patch Mine
Princess Eulalia
Pueblo Belle Occurrence
Puzzler
Rafter Lease
Roosevelt Lease
Schoolhouse Limburgite Porphry
Shields
Simon
Smoky Hill Mine
Sparkling Jewel Vein Occurrence (Chapman Mine)
Success No. 1 Occurrence
Sunnyside
Tornado
Tungsten Lode
Unknown Gold (MRDS - 10108251)
Unknown Gold Occurrence (MRDS - 10017396)
Unknown Tungsten Occurrence (MRDS - 10017524)
Yellow Pine

Latitude: 40°1'10"N
Longitude: 105°24'53"W
Decimal Degree (lat, lon): 40.019444444444,-105.41472222222

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	Allophane	Analcime	Arsenic	Baryte	Bismutite	Chalcopyrite	Clay	Columbite	Copper
Linarite	Malachite	Melonite	Mica	Molybdenite	None	Not in a structural group	Pyrite	Quartz	Rocksalt
Scheelite	Sphalerite	Stibnite	Tetrahedrite

Acanthite ()*	Allophane ()*	Altaite ()*	Analcime ()*	Azurite ()*
Baryte ()*	Bismuth ()*	Bismuthinite ()*	Bismutite ()*	Bornite ()*
Chalcopyrite ()*	Coloradoite ()*	Empressite ()*	Ferberite ()*	Freibergite ()*
Galena ()*	Gold ()*	Krennerite ()*	Linarite ()*	Malachite ()*
Melonite ()*	Mercury ()*	Molybdenite ()*	Muscovite ()*	Petzite ()*
Posnjakite ()*	Pyrite ()*	Quartz ()*	Rickardite ()*	Scheelite ()*
Silver ()*	Sphalerite ()*	Stephanite ()*	Stromeyerite ()*	Sylvanite ()*
Tellurite ()*	Tellurium ()*	Tennantite-(Fe) ()*	Tetrahedrite-(Zn) ()*

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 Bi C Ca Cu Fe H Hg K Mo Na Ni O Pb S Sb Si Te W Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Acanthite Allophane Analcime Arsenic Baryte Bismutite Chalcopyrite Clay Columbite Copper
Linarite Malachite Melonite Mica Molybdenite None Not in a structural group Pyrite Quartz Rocksalt
Scheelite Sphalerite Stibnite Tetrahedrite

39 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			1	185083	2793
Allophane ()*	Allophane	Al₂O₃(SiO₂)_1.3-2.0·2.5-3.0H₂O			1	185068	470
Altaite ()*	Rocksalt	PbTe			1	185047	489
Analcime ()*	Analcime	Na(AlSi₂O₆)·H₂O			1	185117	1627
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂			1	185129	5509
Baryte ()*	Baryte	Ba(SO₄)			1	185083	11547
Bismuth ()*	Arsenic	Bi			1	185084	1966
Bismuthinite ()*	Stibnite	Bi₂S₃			1	185084	1935
Bismutite ()*	Bismutite	Bi₂O₂(CO₃)			1	185084	716
Bornite ()*	None	Cu₅FeS₄			1	185129	5516
Chalcopyrite ()*	Chalcopyrite	CuFeS₂			1	185083	27198
Coloradoite ()*	Sphalerite	HgTe			1	185063	169
Empressite ()*	None	AgTe			1	185063	43
Ferberite ()*	Columbite	Fe²⁺(WO₄)			5	185060,185065,185073,185081,185095	551
Freibergite ()*	Tetrahedrite	Ag₆[Cu₄Fe₂]Sb₄S₁₂			1	185129	663
Galena ()*	Rocksalt	PbS			2	185049,185129	24243
Gold ()*	Copper	Au	1704.13	46	26	185051,185055,185056,185062,185063,185069,185070,185072,185074,185082,185085,185086,185087,185088,185090,185092,185093,185108,185109,185111,185118,185121,185122,185126,185127,185129	30554
Krennerite ()*	None	Au₃AgTe₈			1	185047	111
Linarite ()*	Linarite	CuPb(SO₄)(OH)₂			1	185129	987
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂			1	185129	12537
Melonite ()*	Melonite	NiTe₂			3	185047,185063,185120	207
Mercury ()*	None	Hg			1	185121	397
Molybdenite ()*	Molybdenite	MoS₂			1	185050	5800
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂			1	185081	17380
Petzite ()*	None	Ag₃AuTe₂			1	185047	409
Posnjakite ()*	None	Cu₄(SO₄)(OH)₆·H₂O			1	185129	309
Pyrite ()*	Pyrite	FeS₂			4	185049,185050,185082,185129	39462
Quartz ()*	Quartz	SiO₂			6	185047,185049,185050,185063,185121,185129	61156
Rickardite ()*	None	Cu_3-xTe₂			1	185111	52
Scheelite ()*	Scheelite	Ca(WO₄)			1	185065	4894
Silver ()*	Copper	Ag			4	185055,185108,185118,185129	5186
Sphalerite ()*	Sphalerite	ZnS			1	185129	21482
Stephanite ()*	None	Ag₅SbS₄			1	185129	586
Stromeyerite ()*	None	CuAgS			1	185129	332
Sylvanite ()*	Melonite	AgAuTe₄			1	185047	337
Tellurite ()*	None	TeO₂			1	185111	52
Tellurium ()*	None	Te			1	185111	190
Tennantite-(Fe) ()*	Tetrahedrite	Cu₆(Cu₄Fe₂)As₄S₁₃			1	185129	1803
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃			1	185070	5317

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	MinDat Locality ID	Dated Locality (Max Age)	Reference	Reference ID
USGS-Rb-Sr-04130	1704.13	1624.13	1664.13±40	Rb-Sr	age of intrusion	whole rock		110054	G. W. Horton Mill Site Occurrence (Church Placer; Clear Water Placer; Ravens View; Horseshoe Placer; Hubbard Placer), Sugarloaf District, Boulder Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr
NAVDAT-128174	56	46	51±5				128174	110360	Phillips (Meadow Lark; Lee S.; Sur No. 209; Storm Occurrence), Sugarloaf District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
USGS-Rb-Sr-04041	54	54	54	Rb-Sr	age of intrusion	biotite		110360	Phillips (Meadow Lark; Lee S.; Sur No. 209; Storm Occurrence), Sugarloaf District, Boulder Co., Colorado, USA	USGS-Rb-Sr	USGS-Rb-Sr

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...