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:
Caribou District, Boulder Co., Colorado, USA

Oldest recorded age at locality: 69.3
Youngest recorded age at locality: 50.2

mindat Locality ID: 66750
mindat URL: http://www.mindat.org/loc-66750.html

Tectonic Settings:

Total number of sublocalities beneath "Caribou District, Boulder Co., Colorado, USA": 50
Total number of bottom-level sublocalities: 46

Number of Child Localities: 38
Child Localities:
Belcher Mine
Boulder County Mine
Caribou Hill Deposits
Columbia & Spencer Mines
Comstock Occurrence
Eclipse
Eldora
Elephant Mine
Eureka Mine
Gold King Occurrence
Grand County Mine
Grand Island
Grand Island Area
Idaho Mine
Isabel Mine
IXL Mine
Kalamazoo Mine
Magner
Mountain Goat
Native Silver Mine
Pine Shade Mine
Poorman Mine (2)
Potosi & Cross Mines
Radium (Elmer; & Nelson Veins)
Revenge Occurrence
Seven-Thirty Mine
Sherman
Silver Dollar
Silver Point Mine
Terror - Roseberry Occurrence
Trojan Mine
Unknown Gold - Silver Occurrence (MRDS - 10017183)
Unknown Gold - Silver Occurrence (MRDS - 10017187)
Unknown Silver - Lead - Zinc (MRDS - 10018120)
Unknown Silver Occurrence (MRDS - 10017330)
Up To Date Mine
Wade Hampton Mine
Wigwam

Latitude: 39°58'35"N
Longitude: 105°34'2"W
Decimal Degree (lat, lon): 39.976388888889,-105.56722222222

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	Aragonite	Baryte	Calcite	Chalcopyrite	Clay	Columbite	Copper	Corundum	Covellite
Fluorite	Jalpaite	Malachite	Melonite	Mica	Molybdenite	None	Not in a structural group	Polybasite	Pyrite
Pyroxene	Quartz	Rocksalt	Serpentine	Sphalerite	Spinel	Stibnite	Tetrahedrite

Acanthite ()*	Altaite ()*	Anglesite ()*	Augite ()*	Azurite ()*
Baryte ()*	Calcite ()*	Cerussite ()*	Chalcocite ()*	Chalcopyrite ()*
Chlorargyrite ()*	Chrysotile ()*	Coloradoite ()*	Covellite ()*	Diopside ()*
Dolomite ()*	Ferberite ()*	Fluorite ()*	Galena ()*	Gold ()*
Hematite ()*	Ilmenite ()*	Jalpaite ()*	Magnetite ()*	Malachite ()*
Melonite ()*	Molybdenite ()*	Muscovite ()*	Gersdorffite-Pa3 ()*	Pearceite ()*
Petzite ()*	Polybasite ()*	Proustite ()*	Pyrargyrite ()*	Pyrite ()*
Quartz ()*	Roscoelite ()*	Siderite ()*	Silver ()*	Sphalerite ()*
Spinel ()*	Stephanite ()*	Stibnite ()*	Stromeyerite ()*	Sylvanite ()*
Tetrahedrite-(Zn) ()*	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: Ag Al As Au Ba C Ca Cl Cu F Fe H Hg K Mg Mo Ni O Pb S Sb Si Te Ti U V W Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Acanthite Aragonite Baryte Calcite Chalcopyrite Clay Columbite Copper Corundum Covellite
Fluorite Jalpaite Malachite Melonite Mica Molybdenite None Not in a structural group Polybasite Pyrite
Pyroxene Quartz Rocksalt Serpentine Sphalerite Spinel Stibnite Tetrahedrite

47 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	69.3	56.7	9	184478,184485,184487,184491,184501,184502,184507,184508,184523	2793
Altaite ()*	Rocksalt	PbTe	69.3	56.7	3	184494,184495,184510	489
Anglesite ()*	Baryte	Pb(SO₄)			1	184508	2734
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆			1	184476	2060
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	69.3	56.7	2	184492,184497	5509
Baryte ()*	Baryte	Ba(SO₄)			1	184481	11547
Calcite ()*	Calcite	Ca(CO₃)	69.3	56.7	2	184475,184491	27770
Cerussite ()*	Aragonite	Pb(CO₃)	69.3	56.7	8	184478,184485,184487,184491,184501,184502,184507,184523	4979
Chalcocite ()*	None	Cu₂S			1	184497	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	69.3	56.7	3	184475,184491,184504	27198
Chlorargyrite ()*	Rocksalt	AgCl	69.3	56.7	9	184478,184485,184487,184491,184501,184502,184507,184522,184523	1382
Chrysotile ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	69.3	56.7	1	184491	951
Coloradoite ()*	Sphalerite	HgTe	69.3	56.7	2	184494,184495	169
Covellite ()*	Covellite	CuS	69.3	56.7	2	184491,184497	4165
Diopside ()*	Pyroxene	CaMgSi₂O₆			1	184476	4135
Dolomite ()*	None	CaMg(CO₃)₂	69.3	56.7	1	184491	9895
Ferberite ()*	Columbite	Fe²⁺(WO₄)			1	184506	551
Fluorite ()*	Fluorite	CaF₂			1	184504	9617
Galena ()*	Rocksalt	PbS	69.3	56.7	15	184475,184478,184485,184487,184489,184491,184492,184501,184502,184505,184507,184508,184516,184519,184523	24243
Gold ()*	Copper	Au	69.3	56.7	12	184475,184481,184482,184486,184491,184495,184498,184499,184514,184516,184517,184518	30554
Hematite ()*	Corundum	Fe₂O₃			2	184475,184504	14640
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃			1	184476	5433
Jalpaite ()*	Jalpaite	Ag₃CuS₂	69.3	56.7	2	184491,184508	116
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄			1	184476	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	69.3	56.7	1	184492	12537
Melonite ()*	Melonite	NiTe₂	69.3	56.7	1	184494	207
Molybdenite ()*	Molybdenite	MoS₂			3	184481,184504,184507	5800
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂			2	184475,184481	17380
Gersdorffite-Pa3 ()*	Pyrite	NiAsS	69.3	56.7	1	184491	767
Pearceite ()*	Polybasite	[Ag₉CuS₄][(Ag,Cu)₆(As,Sb)₂S₇]	69.3	56.7	1	184491	249
Petzite ()*	None	Ag₃AuTe₂	69.3	56.7	2	184481,184494	409
Polybasite ()*	Polybasite	[Ag₉CuS₄][(Ag,Cu)₆(Sb,As)₂S₇]	69.3	56.7	1	184491	716
Proustite ()*	None	Ag₃AsS₃	69.3	56.7	2	184491,184508	733
Pyrargyrite ()*	None	Ag₃SbS₃	69.3	56.7	2	184491,184508	1425
Pyrite ()*	Pyrite	FeS₂	69.3	56.7	6	184475,184480,184481,184483,184491,184507	39462
Quartz ()*	Quartz	SiO₂	69.3	56.7	7	184475,184481,184483,184491,184507,184508,184510	61156
Roscoelite ()*	Mica	KV³⁺₂(Si₃Al)O₁₀(OH)₂			3	184480,184481,184483	253
Siderite ()*	Calcite	Fe(CO₃)	69.3	56.7	1	184491	6417
Silver ()*	Copper	Ag	69.3	50.2	27	184474,184475,184477,184478,184485,184486,184487,184491,184492,184495,184499,184500,184501,184502,184505,184507,184508,184511,184512,184513,184514,184517,184518,184519,184520,184521,184523	5186
Sphalerite ()*	Sphalerite	ZnS	69.3	56.7	12	184475,184478,184485,184487,184491,184492,184501,184502,184507,184508,184519,184523	21482
Spinel ()*	Spinel	MgAl₂O₄			1	184476	1934
Stephanite ()*	None	Ag₅SbS₄	69.3	56.7	1	184491	586
Stibnite ()*	Stibnite	Sb₂S₃			1	184510	3418
Stromeyerite ()*	None	CuAgS	69.3	56.7	1	184491	332
Sylvanite ()*	Melonite	AgAuTe₄	69.3	56.7	3	184480,184481,184494	337
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	69.3	56.7	2	184491,184492	5317
Uraninite ()*	Fluorite	UO₂	69.3	56.7	5	184489,184491,184492,184495,184508	2718

8 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Sample Num	MinDat Locality ID	Dated Locality (Max Age)	Reference	Reference ID
NAVDAT-32623	69.3	56.7	63±6.3	32623	278552	Grand Island, Caribou District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32624	69.3	56.7	63±6.3	32624	278552	Grand Island, Caribou District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32600	69.3	56.7	63±6.3	32600	110572	Unknown Silver Occurrence (MRDS - 10017330), Caribou District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32607	69.3	56.7	63±6.3	32607	110572	Unknown Silver Occurrence (MRDS - 10017330), Caribou District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32608	69.3	56.7	63±6.3	32608	110572	Unknown Silver Occurrence (MRDS - 10017330), Caribou District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32648	69.3	56.7	63±6.3	32648	110572	Unknown Silver Occurrence (MRDS - 10017330), Caribou District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32649	69.3	56.7	63±6.3	32649	110572	Unknown Silver Occurrence (MRDS - 10017330), Caribou District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT
NAVDAT-32692	67.8	50.2	59±8.8	32692	110572	Unknown Silver Occurrence (MRDS - 10017330), Caribou District, Boulder Co., Colorado, USA	NAVDAT	NAVDAT

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...