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:
Cotopaxi District, Fremont Co., Colorado, USA

mindat Locality ID: 112943
mindat URL: http://www.mindat.org/loc-112943.html

Tectonic Settings:

Total number of sublocalities beneath "Cotopaxi District, Fremont Co., Colorado, USA": 30
Total number of bottom-level sublocalities: 26

Number of Child Localities: 19
Child Localities:
Carson Mining Company Prospect
Coaldale Gypsum Quarry And Plant
Colorado Barry Quarry
Colorado Feldspar Pegmatite
Cotopaxi
Howard
Indian Mountain
Iron Dollar Gulch Deposit
Quarry (MRDS - 10239328)
Quarry (MRDS - 10263665)
Red Gulch
Sand Gulch Prospect No. 2
Sturbaum - Fister Mine
Texas Creek Stone Quarry
Unknown Feldspar Occurrence (MRDS - 10017722)
Unknown Marble - Dimension Occurrence (MRDS - 10018678)
Unnamed No. 2 Pegmatite Occurrence (MRDS - 10010898)
West McCoy Gulch Property
Zabresky Pegmatite

Latitude: 38°24'3"N
Longitude: 105°40'42"W
Decimal Degree (lat, lon): 38.400833333333,-105.67833333333

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.

Allanite	Allophane	Amphibole	Aragonite	Baryte	Beryl	Calcite	Chalcopyrite	Clay	Clinozoisite
Columbite	Copper	Corundum	Covellite	Diaspore	Epidote	Feldspar	Fluorite	Gadolinite	Garnet
Gypsum	Humite	Kaolinite	Linarite	Malachite	Marcasite	Mica	Molybdenite	Nickeline	None
Not in a structural group	Olivine	Pyrite	Pyroxene	Quartz	Rocksalt	Rutile	Scheelite	Serpentine	Sphalerite
Spinel	Tetrahedrite	Titanite	Tourmaline	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 Au B Be C Ca Ce Cu F Fe H K Li Mg Mo Na Nb O P Pb S Sb Si Sr Ta Th Ti U W Y Zn Zr

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Allanite Allophane Amphibole Aragonite Baryte Beryl Calcite Chalcopyrite Clay Clinozoisite
Columbite Copper Corundum Covellite Diaspore Epidote Feldspar Fluorite Gadolinite Garnet
Gypsum Humite Kaolinite Linarite Malachite Marcasite Mica Molybdenite Nickeline None
Not in a structural group Olivine Pyrite Pyroxene Quartz Rocksalt Rutile Scheelite Serpentine Sphalerite
Spinel Tetrahedrite Titanite Tourmaline Zircon

61 IMA Minerals at location:

Actinolite ()*	Albite ()*	Allanite-(Ce) ()*	Almandine ()*	Amesite ()*
Anglesite ()*	Anorthite ()*	Anthophyllite ()*	Azurite ()*	Calcite ()*
Chalcopyrite ()*	Chrysocolla ()*	Clinohumite ()*	Clinozoisite ()*	Copper ()*
Cordierite ()*	Covellite ()*	Cuprite ()*	Diopside ()*	Epidote ()*
Euxenite-(Y) ()*	Fluorite ()*	Forsterite ()*	Gadolinite-(Y) ()*	Gahnite ()*
Galena ()*	Goethite ()*	Gold ()*	Gypsum ()*	Hematite ()*
Ilmenite ()*	Kainosite-(Y) ()*	Kaolinite ()*	Linarite ()*	Magnetite ()*
Malachite ()*	Marcasite ()*	Microcline ()*	Molybdenite ()*	Muscovite ()*
Phlogopite ()*	Pyrite ()*	Pyrrhotite ()*	Quartz ()*	Rutile ()*
Samarskite-(Y) ()*	Scheelite ()*	Schorl ()*	Siderite ()*	Sillimanite ()*
Silver ()*	Sphalerite ()*	Strontianite ()*	Synchysite-(Y) ()*	Tetrahedrite-(Zn) ()*
Titanite ()*	Trilithionite ()*	Uraninite ()*	Xenotime-(Y) ()*	Zircon ()*
Zoisite ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂	1	188296	3419
Albite ()*	Feldspar	Na(AlSi₃O₈)	1	188296	8803
Allanite-(Ce) ()*	Allanite Epidote	CaCe(Al₂Fe²⁺)[Si₂O₇][SiO₄]O(OH)	1	188289	706
Almandine ()*	Garnet	Fe²⁺₃Al₂(SiO₄)₃	1	188296	2353
Amesite ()*	Clay Serpentine	Mg₂Al(AlSiO₅)(OH)₄	1	188296	74
Anglesite ()*	Baryte	Pb(SO₄)	1	188296	2734
Anorthite ()*	Feldspar	Ca(Al₂Si₂O₈)	1	188296	1036
Anthophyllite ()*	Amphibole	Mg₂Mg₅Si₈O₂₂(OH)₂	1	188296	718
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	1	188296	5509
Calcite ()*	Calcite	Ca(CO₃)	2	188286,188296	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	4	188283,188294,188296,188311	27198
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	1	188296	3531
Clinohumite ()*	Humite	Mg₉(SiO₄)₄F₂	1	188296	236
Clinozoisite ()*	Clinozoisite Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)	1	188296	1025
Copper ()*	Copper	Cu	1	188311	3846
Cordierite ()*	Beryl	Mg₂Al₄Si₅O₁₈	1	188296	1008
Covellite ()*	Covellite	CuS	1	188296	4165
Cuprite ()*	Not in a structural group	Cu₂O	1	188296	2970
Diopside ()*	Pyroxene	CaMgSi₂O₆	1	188296	4135
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	2	188290,188296	8173
Euxenite-(Y) ()*	Columbite	Y(NbTi)O₆	4	188286,188288,188289,188312	414
Fluorite ()*	Fluorite	CaF₂	4	188286,188289,188292,188296	9617
Forsterite ()*	Olivine	Mg₂(SiO₄)	1	188296	1188
Gadolinite-(Y) ()*	Gadolinite	Y₂Fe²⁺Be₂O₂(SiO₄)₂	1	188292	163
Gahnite ()*	Spinel	ZnAl₂O₄	2	188295,188296	445
Galena ()*	Rocksalt	PbS	1	188296	24243
Goethite ()*	Diaspore	FeO(OH)	1	188296	7437
Gold ()*	Copper	Au	1	188305	30554
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	3	188283,188294,188296	6890
Hematite ()*	Corundum	Fe₂O₃	4	188286,188289,188296,188305	14640
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	1	188296	5433
Kainosite-(Y) ()*	None	Ca₂Y₂(SiO₃)₄(CO₃)·H₂O	1	188289	99
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	1	188293	5591
Linarite ()*	Linarite	CuPb(SO₄)(OH)₂	1	188296	987
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	7	188286,188289,188290,188296,188298,188300,188301	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	1	188296	12537
Marcasite ()*	Marcasite	FeS₂	1	188296	5674
Microcline ()*	Feldspar	K(AlSi₃O₈)	13	188283,188286,188289,188290,188291,188292,188293,188294,188295,188296,188298,188299,188310	4924
Molybdenite ()*	Molybdenite	MoS₂	1	188296	5800
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	9	188286,188289,188290,188291,188292,188293,188296,188298,188299	17380
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂	1	188296	2273
Pyrite ()*	Pyrite	FeS₂	1	188296	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	1	188296	9056
Quartz ()*	Quartz	SiO₂	13	188283,188286,188288,188289,188290,188292,188293,188294,188296,188298,188299,188305,188311	61156
Rutile ()*	Rutile	TiO₂	1	188296	5614
Samarskite-(Y) ()*	Columbite	YFe³⁺Nb₂O₈	1	188289	353
Scheelite ()*	Scheelite	Ca(WO₄)	1	188296	4894
Schorl ()*	Tourmaline	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	1	188296	2705
Siderite ()*	Calcite	Fe(CO₃)	1	188296	6417
Sillimanite ()*	Not in a structural group	Al₂SiO₅	2	188295,188296	1516
Silver ()*	Copper	Ag	2	188296,188305	5186
Sphalerite ()*	Sphalerite	ZnS	4	188283,188294,188296,188305	21482
Strontianite ()*	Aragonite	Sr(CO₃)	1	188296	589
Synchysite-(Y) ()*	None	CaY(CO₃)₂F	1	188289	55
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	1	188296	5317
Titanite ()*	Titanite	CaTi(SiO₄)O	1	188296	4899
Trilithionite ()*	Mica	KLi_1.5Al_1.5(Si₃Al)O₁₀F₂	1	188287	28
Uraninite ()*	Fluorite	UO₂	1	188289	2718
Xenotime-(Y) ()*	Zircon	Y(PO₄)	1	188289	939
Zircon ()*	Zircon	Zr(SiO₄)	3	188289,188296,188312	5251
Zoisite ()*	Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)	1	188296	1025

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL
R050486	Cotopaxi, Cotopaxi District, Fremont Co., Colorado, USA	https://rruff.info/R050486

All locality data graciously provided by mindat.org

All age data...