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:
Keystone Gold District, Pennington Co., South Dakota, USA

mindat Locality ID: 44982
mindat URL: http://www.mindat.org/loc-44982.html

Tectonic Settings:

Total number of sublocalities beneath "Keystone Gold District, Pennington Co., South Dakota, USA": 19
Total number of bottom-level sublocalities: 18

Number of Child Localities: 18
Child Localities:
Big Hit Mine
Bismark-Ida Florence Groups
Bullion Formation
Bullion-Columbia Mine
Cobalt Lode (Margaret Tin Mine)
Eclipse Group
Egyptian Group
Etta Formation
Gold Hill Lode Occurrence
Grand Island Group
Holy Terror Mine
Juniper Mine
Keystone
Keystone Mine
Legal Tender Group
Lucky Boy Mine (Luck Boy Mine)
Nathaniel Pope
Tom Custer Mine

Latitude: 43°53'49"N
Longitude: 103°25'14"W
Decimal Degree (lat, lon): 43.896944444444,-103.42055555556

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.

Amorphous	Amphibole	Arsenic	Arsenopyrite	Calcite	Chalcopyrite	Clay	Copper	Epidote	Epsomite
Garnet	Halotrichite	Mica	Nickeline	None	Pyrite	Pyroxene	Quartz	Sphalerite	Staurolite
Stibnite	Titanite	Tourmaline	Triplite

Almandine ()*	Ankerite ()*	Arsenopyrite ()*	Bismite ()*	Bismuth ()*
Bismuthinite ()*	Calcite ()*	Chalcopyrite ()*	Cummingtonite ()*	Diadochite ()*
Diopside ()*	Epsomite ()*	Gold ()*	Graphite ()*	Hedenbergite ()*
Magnesite ()*	Muscovite ()*	Pickeringite ()*	Pyrite ()*	Pyrrhotite ()*
Quartz ()*	Schorl ()*	Siderite ()*	Silver ()*	Sphalerite ()*
Staurolite ()*	Titanite ()*	Triplite ()*	Zoisite ()*

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 B Bi C Ca Cu F Fe H K Mg Mn Na O P S Si Ti Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amorphous Amphibole Arsenic Arsenopyrite Calcite Chalcopyrite Clay Copper Epidote Epsomite
Garnet Halotrichite Mica Nickeline None Pyrite Pyroxene Quartz Sphalerite Staurolite
Stibnite Titanite Tourmaline Triplite

29 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Almandine ()*	Garnet	Fe²⁺₃Al₂(SiO₄)₃	1	266111	2353
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	3	266104,266107,266114	3092
Arsenopyrite ()*	Arsenopyrite	FeAsS	6	266102,266104,266111,266115,266118,266119	9052
Bismite ()*	None	Bi₂O₃	1	266105	214
Bismuth ()*	Arsenic	Bi	1	266105	1966
Bismuthinite ()*	Stibnite	Bi₂S₃	1	266105	1935
Calcite ()*	Calcite	Ca(CO₃)	1	266114	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	4	266102,266104,266107,266114	27198
Cummingtonite ()*	Amphibole	Mg₂Mg₅Si₈O₂₂(OH)₂	1	266104	327
Diadochite ()*	Amorphous	Fe³⁺₂(PO₄)(SO₄)(OH)·6H₂O	1	266116	81
Diopside ()*	Pyroxene	CaMgSi₂O₆	2	266103,266108	4135
Epsomite ()*	Epsomite	Mg(SO₄)·7H₂O	1	266118	484
Gold ()*	Copper	Au	13	266102,266104,266106,266107,266109,266110,266111,266112,266114,266115,266116,266117,266118	30554
Graphite ()*	None	C	3	266104,266105,266114	2812
Hedenbergite ()*	Pyroxene	CaFe²⁺Si₂O₆	1	266103	741
Magnesite ()*	Calcite	Mg(CO₃)	1	266102	1487
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	3	266105,266111,266116	17380
Pickeringite ()*	Halotrichite	MgAl₂(SO₄)₄·22H₂O	3	266104,266111,266115	265
Pyrite ()*	Pyrite	FeS₂	6	266102,266110,266111,266112,266115,266116	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	6	266102,266104,266107,266110,266114,266115	9056
Quartz ()*	Quartz	SiO₂	12	266102,266103,266104,266105,266107,266110,266111,266112,266114,266115,266116,266118	61156
Schorl ()*	Tourmaline	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	1	266111	2705
Siderite ()*	Calcite	Fe(CO₃)	1	266102	6417
Silver ()*	Copper	Ag	11	266102,266106,266107,266109,266110,266111,266112,266114,266115,266116,266118	5186
Sphalerite ()*	Sphalerite	ZnS	4	266102,266104,266107,266114	21482
Staurolite ()*	Staurolite	Fe²⁺₂Al₉Si₄O₂₃(OH)	1	266111	978
Titanite ()*	Titanite	CaTi(SiO₄)O	2	266103,266108	4899
Triplite ()*	Triplite	Mn²⁺₂(PO₄)F	1	266105	233
Zoisite ()*	Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)	2	266103,266108	1025

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...