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:
McCoy Mine (McCoy-Cove Mine; Cove Mine), McCoy District, Lander Co., Nevada, USA

Oldest recorded age at locality: 41.5
Youngest recorded age at locality: 38.82

mindat Locality ID: 59938
mindat URL: http://www.mindat.org/loc-59938.html

Tectonic Settings:

Total number of sublocalities beneath "McCoy Mine (McCoy-Cove Mine; Cove Mine), McCoy District, Lander Co., Nevada, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 0°0'0"N
Longitude: 0°0'0"E
Decimal Degree (lat, lon): 0,0

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	Aragonite	Argyrodite	Arsenopyrite	Brookite	Calcite	Clay	Copper	Digenite	Marcasite
Mica	Nickeline	None	Not in a structural group	Pentlandite	Phenakite	Pyrite	Rocksalt	Rutile	Smectite-vermiculite
Sphalerite	Stannite	Tetradymite	Tetrahedrite

Acanthite ()*	Anatase ()*	Arsenopyrite ()*	Brookite ()*	Calcite ()*
Canfieldite ()*	Cassiterite ()*	Cerussite ()*	Chatkalite ()*	Claudetite ()*
Digenite ()*	Freibergite ()*	Galena ()*	Gold ()*	Hedleyite ()*
Kësterite ()*	Marcasite ()*	Montmorillonite ()*	Muscovite ()*	Nontronite ()*
Gersdorffite-Pa3 ()*	Pyrite ()*	Pyrrhotite ()*	Robinsonite ()*	Rutile ()*
Sarcolite ()*	Shadlunite ()*	Silver ()*	Sphalerite ()*	Stannite ()*
Todorokite ()*	Willemite ()*

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 Ba Bi C Ca Cd Cl Cu Fe H K Mg Mn Na Ni O P Pb S Sb Si Sn Sr Te Ti Zn

Elements from minerals reported directly at this locality: Ag Al As Au Ba Bi C Ca Cd Cl Cu Fe H K Mg Mn Na Ni O P Pb S Sb Si Sn Sr Te Ti Zn

Structural Groups for minerals in this locality:
Acanthite Aragonite Argyrodite Arsenopyrite Brookite Calcite Clay Copper Digenite Marcasite
Mica Nickeline None Not in a structural group Pentlandite Phenakite Pyrite Rocksalt Rutile Smectite-vermiculite
Sphalerite Stannite Tetradymite Tetrahedrite

32 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Acanthite ()*	Acanthite	Ag₂S	39.42	38.82	2793
Anatase ()*	Not in a structural group	TiO₂	39.42	38.82	2162
Arsenopyrite ()*	Arsenopyrite	FeAsS	39.42	38.82	9052
Brookite ()*	Brookite	TiO₂	39.42	38.82	700
Calcite ()*	Calcite	Ca(CO₃)	39.42	38.82	27770
Canfieldite ()*	Argyrodite	Ag₈SnS₆	39.42	38.82	91
Cassiterite ()*	Rutile	SnO₂	39.42	38.82	5171
Cerussite ()*	Aragonite	Pb(CO₃)	39.42	38.82	4979
Chatkalite ()*	None	Cu₆FeSn₂S₈	39.42	38.82	8
Claudetite ()*	None	As₂O₃	39.42	38.82	35
Digenite ()*	Digenite	Cu_1.8S	39.42	38.82	1027
Freibergite ()*	Tetrahedrite	Ag₆[Cu₄Fe₂]Sb₄S₁₂	39.42	38.82	663
Galena ()*	Rocksalt	PbS	39.42	38.82	24243
Gold ()*	Copper	Au	39.42	38.82	30554
Hedleyite ()*	Tetradymite	Bi₇Te₃	39.42	38.82	104
Kësterite ()*	Stannite Sphalerite	Cu₂ZnSnS₄	39.42	38.82	82
Marcasite ()*	Marcasite	FeS₂	39.42	38.82	5674
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O	39.42	38.82	1508
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	39.42	38.82	17380
Nontronite ()*	Clay Smectite-vermiculite	Na_0.3Fe³⁺₂(Si,Al)₄O₁₀(OH)₂·nH₂O	39.42	38.82	471
Gersdorffite-Pa3 ()*	Pyrite	NiAsS	39.42	38.82	767
Pyrite ()*	Pyrite	FeS₂	39.42	38.82	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	39.42	38.82	9056
Robinsonite ()*	None	Pb₄Sb₆S₁₃	39.42	38.82	39
Rutile ()*	Rutile	TiO₂	39.42	38.82	5614
Sarcolite ()*	None	Na₄Ca₁₂Al₈Si₁₂O₄₆(SiO₄,PO₄)(OH,H₂O)₄(CO₃,Cl)	39.42	38.82	6
Shadlunite ()*	Pentlandite	(Fe,Cu)₈(Pb,Cd)S₈	39.42	38.82	3
Silver ()*	Copper	Ag	39.42	38.82	5186
Sphalerite ()*	Sphalerite	ZnS	39.42	38.82	21482
Stannite ()*	Stannite Sphalerite	Cu₂FeSnS₄	39.42	38.82	668
Todorokite ()*	None	(Na,Ca,K,Ba,Sr)_1-x(Mn,Mg,Al)₆O₁₂·3-4H₂O	39.42	38.82	433
Willemite ()*	Phenakite	Zn₂SiO₄	39.42	38.82	303

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Michelle_267_a	McCoy skarn and Cove deposits are located in the Fish Creek Mountains, NV. They are approximately 1.6 km apart and formed contemporaneously.
Michelle_268_b	McCoy skarn and Cove deposits are located in the Fish Creek Mountains, NV. They are approximately 1.6 km apart and formed contemporaneously.

2 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
	Michelle_267_a	39.42	38.82	39.12±0.30	Ar-Ar	Age of ore formation	high	biotite	4.15E-16						59938	McCoy Mine (McCoy-Cove Mine; Cove Mine), McCoy District, Lander Co., Nevada, USA	McCoy-Cove Mines	Johnston et al. (2008)		EG103_759	See Figure 15B. Age of skarn ore formation at McCoy and Carlin style enrichment/polymetallic vein deposits at Cove from a shared magmatic fluid source.
	Michelle_268_b	41.5	41.5	~41.5		Age of pre-ore formation									59938	McCoy Mine (McCoy-Cove Mine; Cove Mine), McCoy District, Lander Co., Nevada, USA	McCoy-Cove Mines	Johnston et al. (2008)		EG103_759	See Figure 18. Age of first stage of magmatism creating a "pre-ore" of granodiorite and subeconomic skarn.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...