Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

Important Update News

The RRUFF Project has been migrated to RRUFF.net. Please update your bookmarks immediately, if you have not done so.

The data on this website is already three years out of date, and the entire website will be taken offline before the end of the year.

We are grateful to NASA for the funding of this effort.

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:
Troy Mining District, Lincoln Co., Montana, USA

Oldest recorded age at locality: 1500
Youngest recorded age at locality: 1500

mindat Locality ID: 59273
mindat URL: http://www.mindat.org/loc-59273.html

Tectonic Settings:

Total number of sublocalities beneath "Troy Mining District, Lincoln Co., Montana, USA": 51
Total number of bottom-level sublocalities: 51

Number of Child Localities: 51
Child Localities:
American Eagle Prospect
Barite Prospect (MRDS - 10269924)
Bear Occurrence
Big Eight Mine (Cabinet Lease)
Big Four Prospect
Bimetallic Prospect (Bimetallic Mine)
Black Diamond
Black Horse Prospect
Blacktail
Blue Bird Mine
Bull Lake Prospect
Cabinet
Cabinet Queen Prospect
Callahan Creek Placer
Christmas Tree Mine
Condor Mining & Leasing
Copper Mountain
Daniel Lee Prospect
Ferrel Occurrence
Great Northern Property
Grouse Mountain Prospect (Troy Occurrence)
Hiawatha Prospect
Iron Mask (Iron Mack)
J. F. Claims
Keeler Mountain Prospect
Kotschevar Barite Deposit
L-B Lemire-Bartlett Lead Cliff (Duplex Mine)
Last Chance Prospect
Liberty Metals (Liberty)
Limestone Occurrence (MRDS - 10124694)
Limestone Occurrence (MRDS - 10124927)
Little Spokane Prospect
Lost Cause Mine
Montana Morning
Montana Premier Mine (Copper Mountain Mine)
Noggle Creek
Rankin Prospect
Silver Grouse Prospect
Silver King Claims
Silver Strike Prospect
Snipetown Placer
Snowstorm Mine (B And B Mine)
Spar Lake Deposit (Troy Prospect)
Spar Lake Occurrence (Daniel Lee)
Trio Prospect
Troy Area Occurrence
Troy Dike
Troy Mine
Universal Prospect
Unknown Uranium Occurrence (MRDS - 10019442)
Weyerhaeuser Prospect

Latitude: 48°24'31"N
Longitude: 115°55'51"W
Decimal Degree (lat, lon): 48.408611111111,-115.93083333333

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	Amphibole	Apatite	Aragonite	Arsenopyrite	Baryte	Calcite	Chalcopyrite	Clay	Cobaltite
Copper	Corundum	Covellite	Digenite	Feldspar	Mica	Nickeline	None	Pentlandite	Pyrite
Quartz	Rocksalt	Sphalerite	Spinel	Stannite	Tetrahedrite

Acanthite ()*	Actinolite ()*	Albite ()*	Anglesite ()*	Ankerite ()*
Arsenopyrite ()*	Baryte ()*	Bornite ()*	Calcite ()*	Cerussite ()*
Chalcocite ()*	Chalcopyrite ()*	Cobaltite ()*	Copper ()*	Covellite ()*
Digenite ()*	Dolomite ()*	Galena ()*	Hematite ()*	Idaite ()*
Ilmenite ()*	Magnetite ()*	Muscovite ()*	Pentlandite ()*	Pyrite ()*
Pyromorphite ()*	Pyrrhotite ()*	Quartz ()*	Rhodochrosite ()*	Silver ()*
Sphalerite ()*	Stromeyerite ()*	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 As Ba C Ca Cl Co Cu Fe H K Mg Mn Na Ni O P Pb S Sb Si Ti Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Acanthite Amphibole Apatite Aragonite Arsenopyrite Baryte Calcite Chalcopyrite Clay Cobaltite
Copper Corundum Covellite Digenite Feldspar Mica Nickeline None Pentlandite Pyrite
Quartz Rocksalt Sphalerite Spinel Stannite Tetrahedrite

33 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	1500	1500	1	230691	2793
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂			1	230652	3419
Albite ()*	Feldspar	Na(AlSi₃O₈)	1500	1500	1	230691	8803
Anglesite ()*	Baryte	Pb(SO₄)			1	230654	2734
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	1500	1500	1	230691	3092
Arsenopyrite ()*	Arsenopyrite	FeAsS			1	230654	9052
Baryte ()*	Baryte	Ba(SO₄)	1500	1500	3	230665,230674,230691	11547
Bornite ()*	None	Cu₅FeS₄	1500	1500	2	230691,230696	5516
Calcite ()*	Calcite	Ca(CO₃)	1500	1500	3	230652,230690,230691	27770
Cerussite ()*	Aragonite	Pb(CO₃)			1	230654	4979
Chalcocite ()*	None	Cu₂S	1500	1500	2	230691,230696	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	1500	1500	6	230652,230654,230684,230690,230691,230696	27198
Cobaltite ()*	Cobaltite	CoAsS	1500	1500	1	230691	966
Copper ()*	Copper	Cu			1	230684	3846
Covellite ()*	Covellite	CuS	1500	1500	1	230691	4165
Digenite ()*	Digenite	Cu_1.8S	1500	1500	1	230691	1027
Dolomite ()*	None	CaMg(CO₃)₂	1500	1500	1	230691	9895
Galena ()*	Rocksalt	PbS	1500	1500	6	230652,230654,230669,230687,230690,230691	24243
Hematite ()*	Corundum	Fe₂O₃	1500	1500	1	230691	14640
Idaite ()*	Stannite Sphalerite	Cu₃FeS₄	1500	1500	1	230691	142
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	1500	1500	1	230691	5433
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	1500	1500	1	230691	14899
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	1500	1500	1	230691	17380
Pentlandite ()*	Pentlandite	(Ni,Fe)₉S₈	1500	1500	1	230691	1512
Pyrite ()*	Pyrite	FeS₂	1500	1500	5	230652,230654,230690,230691,230696	39462
Pyromorphite ()*	Apatite	Pb₅(PO₄)₃Cl			1	230654	1725
Pyrrhotite ()*	Nickeline	Fe₇S₈	1500	1500	4	230652,230669,230690,230691	9056
Quartz ()*	Quartz	SiO₂			3	230684,230690,230696	61156
Rhodochrosite ()*	Calcite	Mn(CO₃)			1	230696	1711
Silver ()*	Copper	Ag	1500	1500	2	230691,230696	5186
Sphalerite ()*	Sphalerite	ZnS	1500	1500	6	230652,230654,230669,230687,230690,230691	21482
Stromeyerite ()*	None	CuAgS	1500	1500	1	230691	332
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	1500	1500	2	230691,230696	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
	sedcu-00676	1500	1500	M. Proterozoic										Cu	164790	Spar Lake Deposit (Troy Prospect), Troy Mining District, Lincoln Co., Montana, USA	Spar Lake	Cox et al. (2003)		USGSOFR03_107

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...