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:
Alder Gulch Mining District (Virginia City Mining District; Fairweather Mining District), Madison Co., Montana, USA

Oldest recorded age at locality: 1281.37
Youngest recorded age at locality: 70

mindat Locality ID: 50280
mindat URL: http://www.mindat.org/loc-50280.html

Tectonic Settings:

Total number of sublocalities beneath "Alder Gulch Mining District (Virginia City Mining District; Fairweather Mining District), Madison Co., Montana, USA": 69
Total number of bottom-level sublocalities: 68

Number of Child Localities: 67
Child Localities:
Adelaine Hollow Muscovite Occurrence
Alameda Mine-Wakoosta Mine
Alder Gulch Placers
Alder Gulch Project (Kearsarge-Apex Shear Zone; Kearsarge Mine; Apex Mine)
Alder Mine
Alfreda Mine
Alhambra
Apex Mine (Kearsarge/Apex; Alder Gulch)
B.L.M. W. Mine
Bartlett Mines
Batten Brothers Mine
Bell Mine (Alder Gulch; Alder Gulch Mine; Belle Mine)
Blue Bell Group Mines (Silver Bell Mine)
Brown's Gulch
Bubany Placer
Cabin And Cornucopia Lode Occurrence
Cirtel Mine
Don-A-Vera
Eagle Black Group
Easton-Pacific Mine
El Fleeda Mine
Eldorado Gold Placer
Excelsior
Forks Mine
Gardner Mine
Gold Bar
Granite Creek Mine
Hartsolo Mine
High Up
Highland Lady
Hill Top Mine
Homestake And Blackrock Mine (Blackrock And Homestake Mine)
I X L
Janus Group
Kennett-Bertha Mine (Bertha Mine; Kennet)
Lawyer Deposit
Lost Lode Mine
Madden Group
Madison Quartz Deposit A
Madison Quartz Deposit B
Mapleton Mine
Marietta Mine (Marietta And Metallic)
Miller Tunnel
Mountain Chief Occurrence
Mountain Flower Mine
Nellie Bly
North Lavain (North Louaiw Prospect)
Pacific Mines
Pauline
Pearl Group
Pioneer Mine
Prospect Mine
Racetrack Area
Rosebud Mine
Sampson Mine
Silver Bell
Silver Hill
St. John Group
St. Lawrence Consolidated Mine
Summit
Sunnyside
Tabor No. 1
Tomich Mine
U. S. Grant Mine
Unnamed Gold Deposit (MRDS - 10305660)
Williams Gulch Placer (Williams Creek)
Winnetka Mine (Winnetaka Mine)

Latitude: 45°16'5"N
Longitude: 111°57'20"W
Decimal Degree (lat, lon): 45.268055555556,-111.95555555556

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.

Acanthite	Calcite	Chalcopyrite	Clay	Copper	Corundum	Covellite	Feldspar	Garnet	Malachite
Melonite	Mica	None	Pyrite	Quartz	Rocksalt	Sphalerite	Stibnite	Tetrahedrite

Acanthite ()*	Almandine ()*	Calcite ()*	Chalcocite ()*	Chalcopyrite ()*
Copper ()*	Corundum ()*	Covellite ()*	Galena ()*	Gold ()*
Hematite ()*	Malachite ()*	Muscovite ()*	Nagyágite ()*	Orthoclase ()*
Pyrargyrite ()*	Pyrite ()*	Quartz ()*	Siderite ()*	Silver ()*
Sphalerite ()*	Stibnite ()*	Sylvanite ()*	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: Ag Al Au C Ca Cu Fe H K O Pb S Sb Si Te Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Acanthite Calcite Chalcopyrite Clay Copper Corundum Covellite Feldspar Garnet Malachite
Melonite Mica None Pyrite Quartz Rocksalt Sphalerite Stibnite Tetrahedrite

24 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
Acanthite ()*	Acanthite	Ag₂S	70	70	2	230774,230801	2793
Almandine ()*	Garnet	Fe²⁺₃Al₂(SiO₄)₃	70	70	2	230757,230807	2353
Calcite ()*	Calcite	Ca(CO₃)	70	70	2	230768,230815	27770
Chalcocite ()*	None	Cu₂S	70	70	1	230806	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	70	70	4	230788,230806,230820,230823	27198
Copper ()*	Copper	Cu	70	70	1	230806	3846
Corundum ()*	Corundum	Al₂O₃	70	70	1	230757	1797
Covellite ()*	Covellite	CuS	70	70	1	230806	4165
Galena ()*	Rocksalt	PbS	70	70	6	230779,230788,230796,230809,230820,230823	24243
Gold ()*	Copper	Au	70	70	7	230757,230767,230774,230812,230813,230815,230822	30554
Hematite ()*	Corundum	Fe₂O₃	70	70	3	230774,230812,230823	14640
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	70	70	1	230823	12537
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	70	70	1	230790	17380
Nagyágite ()*	None	[Pb₃(Pb,Sb)₃S₆](Au,Te)₃	70	70	1	230815	67
Orthoclase ()*	Feldspar	K(AlSi₃O₈)	70	70	1	230774	2349
Pyrargyrite ()*	None	Ag₃SbS₃	70	70	1	230823	1425
Pyrite ()*	Pyrite	FeS₂	70	70	7	230774,230779,230806,230812,230815,230820,230823	39462
Quartz ()*	Quartz	SiO₂	70	70	7	230774,230793,230794,230812,230815,230820,230823	61156
Siderite ()*	Calcite	Fe(CO₃)	70	70	1	230809	6417
Silver ()*	Copper	Ag	70	70	3	230767,230774,230813	5186
Sphalerite ()*	Sphalerite	ZnS	70	70	5	230774,230788,230801,230806,230823	21482
Stibnite ()*	Stibnite	Sb₂S₃	70	70	2	230774,230801	3418
Sylvanite ()*	Melonite	AgAuTe₄	70	70	1	230812	337
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	70	70	2	230774,230801	5317

7 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Source	Age from other Locality	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
Mo-00186	70	70					Yes	Molybdenite, Powellite, Wulfenite	Mo	23236	Madison Co., Montana, USA	Madison County	Gammons et al. (2006)	10.1007/s10230-006-0113-7	MWE25_70
USGS-Rb-Sr-03010	1281.37	911.37	1096.37±185	Rb-Sr	age of intrusion	whole rock				161805	Granite Creek Mine, Alder Gulch Mining District (Virginia City Mining District; Fairweather Mining District), Madison Co., Montana, USA		USGS-Rb-Sr		USGS-Rb-Sr
USGS-Rb-Sr-03011	1087.63	987.63	1037.63±50	Rb-Sr		whole rock				161805	Granite Creek Mine, Alder Gulch Mining District (Virginia City Mining District; Fairweather Mining District), Madison Co., Montana, USA		USGS-Rb-Sr		USGS-Rb-Sr
USGS-Rb-Sr-03012	1281.37	911.37	1096.37±185	Rb-Sr	age of intrusion	whole rock				161805	Granite Creek Mine, Alder Gulch Mining District (Virginia City Mining District; Fairweather Mining District), Madison Co., Montana, USA		USGS-Rb-Sr		USGS-Rb-Sr
USGS-Rb-Sr-03013	1087.63	987.63	1037.63±50	Rb-Sr		whole rock				161805	Granite Creek Mine, Alder Gulch Mining District (Virginia City Mining District; Fairweather Mining District), Madison Co., Montana, USA		USGS-Rb-Sr		USGS-Rb-Sr
USGS-Rb-Sr-03014	1281.37	911.37	1096.37±185	Rb-Sr	age of intrusion	whole rock				161805	Granite Creek Mine, Alder Gulch Mining District (Virginia City Mining District; Fairweather Mining District), Madison Co., Montana, USA		USGS-Rb-Sr		USGS-Rb-Sr
USGS-Rb-Sr-03015	1087.63	987.63	1037.63±50	Rb-Sr		whole rock				161805	Granite Creek Mine, Alder Gulch Mining District (Virginia City Mining District; Fairweather Mining District), Madison Co., Montana, USA		USGS-Rb-Sr		USGS-Rb-Sr

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...