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:
Alta District (Alto District; Wildhorse District), Custer Co., Idaho, USA

Oldest recorded age at locality: 49
Youngest recorded age at locality: 42

mindat Locality ID: 39416
mindat URL: http://www.mindat.org/loc-39416.html

Tectonic Settings:

Total number of sublocalities beneath "Alta District (Alto District; Wildhorse District), Custer Co., Idaho, USA": 23
Total number of bottom-level sublocalities: 21

Number of Child Localities: 21
Child Localities:
Alto Silver Claims (Alta No. 1)
Basin Group Prospect (Alta Copper)
Beaver Outcrop
Big Falls Creek Deposit (Giant Quartz No. 1; White Elephant)
Hard To Find Claim
Little Fall Creek
Phi Kappa Canyon
Pine Mouse Deposit
Quanta Group (Lodgepole)
Silver Dew Prospect
Sir Rocko Nos. 1 & 2 Prospect
Steep Climb Claim
Summit Creek Occurrence
Summit Creek Occurrence (2)
Unnamed Gold Prospect (MRDS - 10216837)
Unnamed Lead Prospect (Boulder Creek Adit; MRDS - 10192488)
Unnamed Lead Prospect (MRDS - 10120108)
Unnamed Zinc - Silver - Lead Prospect (Sum; MRDS - 10241131)
White Elephant Group (White Elephant West; Dewey)
White Mountain Prospect (Big Joe-Lost Summer Group)
Wildhorse Mine (Steep Climb; Hard To Find; Beaver)

Latitude: 43°49'58"N
Longitude: 114°12'5"W
Decimal Degree (lat, lon): 43.832777777778,-114.20138888889

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.

Amphibole	Aragonite	Baryte	Calcite	Chalcopyrite	Clinozoisite	Epidote	Fluorite	Garnet	Gypsum
Molybdenite	Nickeline	None	Prehnite	Pyrite	Pyroxene	Quartz	Rocksalt	Scheelite	Sphalerite
Spinel	Tetradymite	Vesuvianite	Wollastonite

Actinolite ()*	Andradite ()*	Augite ()*	Baryte ()*	Calcite ()*
Cerussite ()*	Chalcopyrite ()*	Diopside ()*	Epidote ()*	Fluorite ()*
Galena ()*	Grossular ()*	Gypsum ()*	Hedenbergite ()*	Magnetite ()*
Molybdenite ()*	Prehnite ()*	Pyrite ()*	Pyrrhotite ()*	Quartz ()*
Scheelite ()*	Smithsonite ()*	Sphalerite ()*	Tetradymite ()*	Tremolite ()*
Vesuvianite ()*	Wollastonite ()*

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: Al Ba Bi C Ca Cu F Fe H Mg Mo Na O Pb S Si Te W Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amphibole Aragonite Baryte Calcite Chalcopyrite Clinozoisite Epidote Fluorite Garnet Gypsum
Molybdenite Nickeline None Prehnite Pyrite Pyroxene Quartz Rocksalt Scheelite Sphalerite
Spinel Tetradymite Vesuvianite Wollastonite

27 IMA Minerals at location:

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	206737	3419
Andradite ()*	Garnet	Ca₃Fe³⁺₂(SiO₄)₃	2	206716,206723	1534
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆	2	206716,206723	2060
Baryte ()*	Baryte	Ba(SO₄)	1	206721	11547
Calcite ()*	Calcite	Ca(CO₃)	5	206715,206716,206723,206724,206737	27770
Cerussite ()*	Aragonite	Pb(CO₃)	1	206715	4979
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	4	206715,206716,206723,206729	27198
Diopside ()*	Pyroxene	CaMgSi₂O₆	3	206716,206723,206737	4135
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	7	206716,206717,206719,206723,206724,206728,206737	8173
Fluorite ()*	Fluorite	CaF₂	4	206716,206721,206723,206730	9617
Galena ()*	Rocksalt	PbS	4	206715,206716,206723,206729	24243
Grossular ()*	Garnet	Ca₃Al₂(SiO₄)₃	1	206723	1544
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	1	206721	6890
Hedenbergite ()*	Pyroxene	CaFe²⁺Si₂O₆	1	206716	741
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	1	206723	14899
Molybdenite ()*	Molybdenite	MoS₂	2	206736,206737	5800
Prehnite ()*	Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂	2	206716,206723	1898
Pyrite ()*	Pyrite	FeS₂	5	206715,206716,206723,206729,206737	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	1	206716	9056
Quartz ()*	Quartz	SiO₂	9	206715,206716,206718,206721,206723,206724,206730,206736,206737	61156
Scheelite ()*	Scheelite	Ca(WO₄)	4	206723,206724,206729,206737	4894
Smithsonite ()*	Calcite	Zn(CO₃)	1	206715	2473
Sphalerite ()*	Sphalerite	ZnS	4	206715,206716,206723,206729	21482
Tetradymite ()*	Tetradymite	Bi₂Te₂S	1	206716	510
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	2	206724,206737	2562
Vesuvianite ()*	Vesuvianite	(Ca,Na)₁₉(Al,Mg,Fe)₁₃(SiO₄)₁₀(Si₂O₇)₄(OH,F,O)₁₀	2	206716,206737	1395
Wollastonite ()*	Wollastonite	CaSiO₃	1	206716	1247

1 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	NAVDAT-20779	49	42	45+4/-3					20779						141979	White Elephant Group (White Elephant West; Dewey), Alta District (Alto District; Wildhorse District), Custer Co., Idaho, USA		NAVDAT		NAVDAT

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...