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:
East Ridge, Butte Mining District (Summit Valley Mining District), Silver Bow Co., Montana, USA

Oldest recorded age at locality: 64
Youngest recorded age at locality: 57

mindat Locality ID: 36826
mindat URL: http://www.mindat.org/loc-36826.html

Tectonic Settings:

Total number of sublocalities beneath "East Ridge, Butte Mining District (Summit Valley Mining District), Silver Bow Co., Montana, USA": 21
Total number of bottom-level sublocalities: 19

Number of Child Localities: 12
Child Localities:
Amazon Mine
Butte & Duluth Mine (Butte Duluth Mine; Bullwhacker Mine)
Columbia Gardens
Maggie Fraction Mine (Maggie Mine)
Montgomery Mine
Northwestern Mine (Northwest Mine)
Pegmatite Occurrences
Sarsfield Mine (Scarfield Mine)
Schieitzer-Monitor Tunnel
Silver Bow Park
Sinbad Mine
Six O'Clock Mine

Latitude: 46°0'18"N
Longitude: 112°29'26"W
Decimal Degree (lat, lon): 46.005,-112.49055555556

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	Andalusite	Aragonite	Beryl	Calcite	Chalcopyrite	Chlorite	Clay	Copper
Corundum	Covellite	Diaspore	Digenite	Enargite	Feldspar	Fluorite	Gypsum	Kaolinite	Malachite
Mica	Molybdenite	None	Not in a structural group	Pyrite	Pyrophyllite	Pyroxene	Quartz	Rhodonite	Rocksalt
Scheelite	Sphalerite	Spinel	Tetrahedrite	Tourmaline	Wurtzite

Alunite ()*	Anhydrite ()*	Augite ()*	Azurite ()*	Beryl ()*
Bornite ()*	Cerussite ()*	Chalcocite ()*	Chalcopyrite ()*	Chamosite ()*
Chrysocolla ()*	Copper ()*	Cornwallite ()*	Covellite ()*	Cuprite ()*
Digenite ()*	Enargite ()*	Fluorite ()*	Galena ()*	Goethite ()*
Gold ()*	Gypsum ()*	Hematite ()*	Hydrozincite ()*	Jarosite ()*
Kaolinite ()*	Libethenite ()*	Magnetite ()*	Malachite ()*	Microcline ()*
Molybdenite ()*	Muscovite ()*	Powellite ()*	Pyrite ()*	Pyrophyllite ()*
Quartz ()*	Rhodochrosite ()*	Rhodonite ()*	Schorl ()*	Siderite ()*
Smithsonite ()*	Sphalerite ()*	Tennantite-(Fe) ()*	Tenorite ()*	Tetrahedrite-(Zn) ()*

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 As Au B Be C Ca Cu F Fe H K Mg Mn Mo Na O P Pb S Sb Si Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Allophane Alunite Andalusite Aragonite Beryl Calcite Chalcopyrite Chlorite Clay Copper
Corundum Covellite Diaspore Digenite Enargite Feldspar Fluorite Gypsum Kaolinite Malachite
Mica Molybdenite None Not in a structural group Pyrite Pyrophyllite Pyroxene Quartz Rhodonite Rocksalt
Scheelite Sphalerite Spinel Tetrahedrite Tourmaline Wurtzite

45 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
Alunite ()*	None	KAl₃(SO₄)₂(OH)₆	64	57	1	233825	966
Anhydrite ()*	Not in a structural group	Ca(SO₄)	64	57	1	233825	1588
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆			1	233815	2060
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	64	57	2	233822,233825	5509
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈			1	233816	4286
Bornite ()*	None	Cu₅FeS₄	64	57	1	233825	5516
Cerussite ()*	Aragonite	Pb(CO₃)	64	57	1	233825	4979
Chalcocite ()*	None	Cu₂S	64	57	5	233809,233820,233823,233825,233826	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	64	57	6	233808,233815,233817,233820,233821,233825	27198
Chamosite ()*	Chlorite Clay	(Fe²⁺,Mg,Al,Fe³⁺)₆(Si,Al)₄O₁₀(OH,O)₈			2	233809,233822	577
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	64	57	7	233809,233813,233814,233817,233821,233822,233825	3531
Copper ()*	Copper	Cu	64	57	5	233809,233815,233817,233822,233825	3846
Cornwallite ()*	None	Cu₅(AsO₄)₂(OH)₄	64	57	1	233825	175
Covellite ()*	Covellite	CuS	64	57	1	233825	4165
Cuprite ()*	Not in a structural group	Cu₂O	64	57	5	233809,233817,233821,233822,233825	2970
Digenite ()*	Digenite	Cu_1.8S	64	57	1	233825	1027
Enargite ()*	Enargite Wurtzite	Cu₃AsS₄	64	57	1	233825	910
Fluorite ()*	Fluorite	CaF₂	64	57	1	233825	9617
Galena ()*	Rocksalt	PbS	64	57	2	233825,233826	24243
Goethite ()*	Diaspore	FeO(OH)	64	57	1	233825	7437
Gold ()*	Copper	Au			1	233811	30554
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	64	57	1	233825	6890
Hematite ()*	Corundum	Fe₂O₃	64	57	1	233825	14640
Hydrozincite ()*	None	Zn₅(CO₃)₂(OH)₆	64	57	1	233825	1066
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆	64	57	1	233825	2228
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	64	57	1	233825	5591
Libethenite ()*	Andalusite	Cu₂(PO₄)(OH)	64	57	1	233825	234
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	64	57	1	233825	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	64	57	3	233821,233822,233825	12537
Microcline ()*	Feldspar	K(AlSi₃O₈)			1	233816	4924
Molybdenite ()*	Molybdenite	MoS₂	64	57	4	233817,233820,233825,233826	5800
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	64	57	1	233825	17380
Powellite ()*	Scheelite	Ca(MoO₄)	64	57	1	233825	494
Pyrite ()*	Pyrite	FeS₂	64	57	8	233815,233817,233818,233820,233824,233825,233826,233828	39462
Pyrophyllite ()*	Clay Pyrophyllite	Al₂Si₄O₁₀(OH)₂	64	57	1	233825	771
Quartz ()*	Quartz	SiO₂	64	57	13	233813,233815,233816,233817,233818,233820,233821,233823,233824,233825,233826,233827,233828	61156
Rhodochrosite ()*	Calcite	Mn(CO₃)	64	57	4	233818,233823,233825,233828	1711
Rhodonite ()*	Rhodonite	CaMn₃Mn(Si₅O₁₅)			1	233826	969
Schorl ()*	Tourmaline	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)			1	233816	2705
Siderite ()*	Calcite	Fe(CO₃)	64	57	1	233825	6417
Smithsonite ()*	Calcite	Zn(CO₃)	64	57	1	233825	2473
Sphalerite ()*	Sphalerite	ZnS	64	57	2	233825,233826	21482
Tennantite-(Fe) ()*	Tetrahedrite	Cu₆(Cu₄Fe₂)As₄S₁₃	64	57	1	233825	1803
Tenorite ()*	None	CuO	64	57	6	233808,233814,233817,233821,233822,233825	1101
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	64	57	3	233823,233825,233826	5317

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
	PorphCu-00137	64	57	64–57									Alunite, Bornite, Cerussite, Chalcopyrite, Copper, Covellite, Enargite, Fluorite, Galena, Jarosite, Kaolinite, Magnetite, Molybdenite, Powellite, Pyrite, Pyrophyllite, Rhodochrosite, Siderite, Sphalerite	Cu	107252	Continental Pit (Continental East Pit; East Berkeley Pit), Silver Bow Park, East Ridge, Butte Mining District (Summit Valley Mining District), Silver Bow Co., Montana, USA	Continental/Butte	Singer et al. (2008)		USGSOFR2008_1155

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...