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:
Needle Mountain District (Tacoma District; Florida District; Vallecito District), La Plata Co., Colorado, USA

mindat Locality ID: 50045
mindat URL: http://www.mindat.org/loc-50045.html

Tectonic Settings:

Total number of sublocalities beneath "Needle Mountain District (Tacoma District; Florida District; Vallecito District), La Plata Co., Colorado, USA": 26
Total number of bottom-level sublocalities: 25

Number of Child Localities: 24
Child Localities:
Aetna Mine (Patented Claim: Aetna; MS 2354)
Apache Mine (Iron Valley; MS 19158; Patented Claim: Apache; MS 19158)
Aztec Mine (Republic; MS 14379; Patented Claims: Aztec; MS 14379)
Black Giant Mine (Patented Claims: Black Giant; Jr.; MS 1608; Baby Giant; MS 1764; Black Monster; MS 1762; Black Giant; MS 1609)
Black Horse Mine (MS 427; Patented Claim: Black Horse)
Brooklyn Group
Cason Manganese Prospect
Chicago Basin
Chicago Basin Disseminated Molybdenum Deposit
Emerald Lake Mine (Emerald Lake Mill Site; MS 14476b; Patented Claims: Emerald Lake Nos. 1-5; MS 14476a)
Eureka Mine (Patented Claim: Eureka; MS 5620)
Homestake Tunnel
Irving Formation
Jennie Hayes Mine (Patented Claim: Jennie Hayes; MS 19425)
Little Jim Mine (Southern Cross; MS 4520; E.A.K.; MS 4520; Patented Claims: Little Jim; MS 4520)
Mastadon Mine (Golden Needle; MS 14152)
Mt. Eolus Mine
Oregon Claims (Unpatented Claims: Oregon No. 1; Oregon No. 2)
Pittsburg Mine
Sheridan Mine (Patented Claim: Sheridan; MS 19258)
Slipper Tunnel
Thunder Mountain
Vallecito Group
Waterfall Mine (Bluff - Waterfall Mine)

Latitude: 37°35'54"N
Longitude: 107°37'27"W
Decimal Degree (lat, lon): 37.598333333333,-107.62416666667

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	Arsenopyrite	Autunite	Baryte	Calcite	Chalcopyrite	Clay	Copper	Corundum	Covellite
Enargite	Fluorite	Kaolinite	Malachite	Mica	Molybdenite	None	Not in a structural group	Polybasite	Pyrite
Pyrophyllite	Quartz	Rocksalt	Sphalerite	Spinel	Tetradymite	Tetrahedrite	Wurtzite

Acanthite ()*	Anglesite ()*	Arsenopyrite ()*	Autunite ()*	Azurite ()*
Baryte ()*	Bornite ()*	Calcite ()*	Chalcopyrite ()*	Covellite ()*
Dickite ()*	Enargite ()*	Fluorite ()*	Freibergite ()*	Galena ()*
Gold ()*	Hematite ()*	Hydrozincite ()*	Kaolinite ()*	Magnetite ()*
Malachite ()*	Metatorbernite ()*	Molybdenite ()*	Muscovite ()*	Petzite ()*
Polybasite ()*	Pyrite ()*	Pyrophyllite ()*	Quartz ()*	Rhodochrosite ()*
Silver ()*	Sphalerite ()*	Stephanite ()*	Tetradymite ()*	Tetrahedrite-(Zn) ()*
Uraninite ()*

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 Cu F Fe H K Mn Mo O P Pb S Sb Si Te U Zn

Elements from minerals reported directly at this locality: Ag As Au Ba Bi C Cu Fe H O Pb S Sb Te

Structural Groups for minerals in this locality:
Acanthite Arsenopyrite Autunite Baryte Calcite Chalcopyrite Clay Copper Corundum Covellite
Enargite Fluorite Kaolinite Malachite Mica Molybdenite None Not in a structural group Polybasite Pyrite
Pyrophyllite Quartz Rocksalt Sphalerite Spinel Tetradymite Tetrahedrite Wurtzite

36 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Acanthite ()*	Acanthite	Ag₂S	3	191128,191130,191142	2793
Anglesite ()*	Baryte	Pb(SO₄)	0		2734
Arsenopyrite ()*	Arsenopyrite	FeAsS	0		9052
Autunite ()*	Autunite	Ca(UO₂)₂(PO₄)₂·10-12H₂O	1	191149	1272
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	0		5509
Baryte ()*	Baryte	Ba(SO₄)	0		11547
Bornite ()*	None	Cu₅FeS₄	0		5516
Calcite ()*	Calcite	Ca(CO₃)	2	191137,191144	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	13	191128,191129,191130,191131,191132,191133,191136,191137,191141,191142,191146,191147,191153	27198
Covellite ()*	Covellite	CuS	0		4165
Dickite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	2	191135,191136	651
Enargite ()*	Enargite Wurtzite	Cu₃AsS₄	0		910
Fluorite ()*	Fluorite	CaF₂	7	191128,191129,191132,191138,191141,191142,191144	9617
Freibergite ()*	Tetrahedrite	Ag₆[Cu₄Fe₂]Sb₄S₁₂	0		663
Galena ()*	Rocksalt	PbS	2	191136,191145	24243
Gold ()*	Copper	Au	1	191153	30554
Hematite ()*	Corundum	Fe₂O₃	0		14640
Hydrozincite ()*	None	Zn₅(CO₃)₂(OH)₆	1	191135	1066
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	2	191135,191136	5591
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	1	191140	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	0		12537
Metatorbernite ()*	None	Cu(UO₂)₂(PO₄)₂·8H₂O	1	191149	443
Molybdenite ()*	Molybdenite	MoS₂	4	191130,191135,191136,191145	5800
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	2	191135,191136	17380
Petzite ()*	None	Ag₃AuTe₂	0		409
Polybasite ()*	Polybasite	[Ag₉CuS₄][(Ag,Cu)₆(Sb,As)₂S₇]	0		716
Pyrite ()*	Pyrite	FeS₂	2	191136,191142	39462
Pyrophyllite ()*	Clay Pyrophyllite	Al₂Si₄O₁₀(OH)₂	2	191135,191136	771
Quartz ()*	Quartz	SiO₂	15	191128,191129,191130,191131,191132,191133,191136,191137,191138,191142,191144,191145,191146,191147,191153	61156
Rhodochrosite ()*	Calcite	Mn(CO₃)	7	191128,191130,191131,191136,191138,191142,191144	1711
Silver ()*	Copper	Ag	2	191142,191153	5186
Sphalerite ()*	Sphalerite	ZnS	13	191128,191129,191131,191132,191135,191136,191138,191141,191142,191144,191145,191146,191147	21482
Stephanite ()*	None	Ag₅SbS₄	0		586
Tetradymite ()*	Tetradymite	Bi₂Te₂S	0		510
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	4	191128,191130,191136,191142	5317
Uraninite ()*	Fluorite	UO₂	3	191149,191150,191151	2718

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...