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:
Sherman Mine (Sherman Tunnel; Leadville Corporation Mine; Day Mines; Hilltop Mine), Upper Iowa Gulch, Leadville District, Lake Co., Colorado, USA

Oldest recorded age at locality: 290
Youngest recorded age at locality: 37.9

mindat Locality ID: 5991
mindat URL: http://www.mindat.org/loc-5991.html

Tectonic Settings:

Total number of sublocalities beneath "Sherman Mine (Sherman Tunnel; Leadville Corporation Mine; Day Mines; Hilltop Mine), Upper Iowa Gulch, Leadville District, Lake Co., Colorado, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 39°13'41"N
Longitude: 106°10'32"W
Decimal Degree (lat, lon): 39.228055555556,-106.17555555556

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.

Allophane	Alunite	Apatite	Aragonite	Baryte	Brochantite	Calcite	Chalcopyrite	Copper	Covellite
Diaspore	Linarite	Malachite	None	Not in a structural group	Phenakite	Pyrite	Pyrochlore	Quartz	Rocksalt
Scheelite	Sphalerite

Anglesite ()*	Aurichalcite ()*	Azurite ()*	Baryte ()*	Bindheimite ()*
Brochantite ()*	Calcite ()*	Cerussite ()*	Chalcopyrite ()*	Chrysocolla ()*
Copper ()*	Covellite ()*	Cuprite ()*	Dolomite ()*	Galena ()*
Goethite ()*	Graphite ()*	Hemimorphite ()*	Huntite ()*	Linarite ()*
Malachite ()*	Oxyplumboroméite ()*	Plumbojarosite ()*	Pyrite ()*	Pyromorphite ()*
Quartz ()*	Rosasite ()*	Siderite ()*	Silver ()*	Smithsonite ()*
Sphalerite ()*	Willemite ()*	Wulfenite ()*	Zincrosasite ()*

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 Ba C Ca Cl Cu Fe H Mg Mo O P Pb S Sb Si Zn

Elements from minerals reported directly at this locality: Ag Al Ba C Ca Cl Cu Fe H Mg Mo O P Pb S Sb Si Zn

Structural Groups for minerals in this locality:
Allophane Alunite Apatite Aragonite Baryte Brochantite Calcite Chalcopyrite Copper Covellite
Diaspore Linarite Malachite None Not in a structural group Phenakite Pyrite Pyrochlore Quartz Rocksalt
Scheelite Sphalerite

34 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Anglesite ()*	Baryte	Pb(SO₄)	290	39.9	2734
Aurichalcite ()*	None	(Zn,Cu)₅(CO₃)₂(OH)₆	290	39.9	919
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	290	39.9	5509
Baryte ()*	Baryte	Ba(SO₄)	290	39.9	11547
Bindheimite ()*	Pyrochlore	Pb₂Sb⁵⁺₂O₇	290	39.9	450
Brochantite ()*	Brochantite	Cu₄(SO₄)(OH)₆	290	39.9	1633
Calcite ()*	Calcite	Ca(CO₃)	290	39.9	27770
Cerussite ()*	Aragonite	Pb(CO₃)	290	39.9	4979
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	290	39.9	27198
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	290	39.9	3531
Copper ()*	Copper	Cu	290	39.9	3846
Covellite ()*	Covellite	CuS	290	39.9	4165
Cuprite ()*	Not in a structural group	Cu₂O	290	39.9	2970
Dolomite ()*	None	CaMg(CO₃)₂	290	39.9	9895
Galena ()*	Rocksalt	PbS	290	39.9	24243
Goethite ()*	Diaspore	FeO(OH)	290	39.9	7437
Graphite ()*	None	C	290	39.9	2812
Hemimorphite ()*	Not in a structural group	Zn₄(Si₂O₇)(OH)₂·H₂O	290	39.9	1689
Huntite ()*	Not in a structural group	CaMg₃(CO₃)₄	290	39.9	69
Linarite ()*	Linarite	CuPb(SO₄)(OH)₂	290	39.9	987
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	290	39.9	12537
Oxyplumboroméite ()*	Pyrochlore	Pb₂Sb₂O₇	290	39.9	33
Plumbojarosite ()*	Alunite	Pb_0.5Fe³⁺₃(SO₄)₂(OH)₆	290	39.9	477
Pyrite ()*	Pyrite	FeS₂	290	39.9	39462
Pyromorphite ()*	Apatite	Pb₅(PO₄)₃Cl	290	39.9	1725
Quartz ()*	Quartz	SiO₂	290	39.9	61156
Rosasite ()*	Malachite	CuZn(CO₃)(OH)₂	290	39.9	454
Siderite ()*	Calcite	Fe(CO₃)	290	39.9	6417
Silver ()*	Copper	Ag	290	39.9	5186
Smithsonite ()*	Calcite	Zn(CO₃)	290	39.9	2473
Sphalerite ()*	Sphalerite	ZnS	290	39.9	21482
Willemite ()*	Phenakite	Zn₂SiO₄	290	39.9	303
Wulfenite ()*	Scheelite	PbMoO₄	290	39.9	1655
Zincrosasite ()*	Malachite	(Zn,Cu)₂(CO₃)(OH)₂	290	39.9	28

3 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Age from other Locality	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID
sedznpb-00472	41.3	37.9	39.6±1.7	Yes	3652	Leadville, Leadville District, Lake Co., Colorado, USA	Leadville	Singer et al. (2009)	USGSOFR2009-1252
sedexmvt-00235	290	254	272±18 Ma (paleomagnetism)		5991	Sherman Mine (Sherman Tunnel; Leadville Corporation Mine; Day Mines; Hilltop Mine), Upper Iowa Gulch, Leadville District, Lake Co., Colorado, USA	Sherman	Taylor et al. (2009)	USGSOFR2009_1297
sedznpb-00489	45.1	39.9	42.5±2.6		5991	Sherman Mine (Sherman Tunnel; Leadville Corporation Mine; Day Mines; Hilltop Mine), Upper Iowa Gulch, Leadville District, Lake Co., Colorado, USA	Sherman	Singer et al. (2009)	USGSOFR2009-1252

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...