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:
Round Top Prospect (incl. Tim's Greisen Prospect), Kaiyuh District, Yukon-Koyukuk Census Area, Alaska, USA

Oldest recorded age at locality: 75
Youngest recorded age at locality: 5

mindat Locality ID: 199759
mindat URL: http://www.mindat.org/loc-199759.html

Tectonic Settings:

Total number of sublocalities beneath "Round Top Prospect (incl. Tim's Greisen Prospect), Kaiyuh District, Yukon-Koyukuk Census Area, Alaska, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 64°8'0"N
Longitude: 157°3'"W
Decimal Degree (lat, lon): 64.133333333333,-157.05

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.

Alunite	Amphibole	Andalusite	Calcite	Chalcopyrite	Clay	Clinozoisite	Copper	Corundum	Covellite
Diaspore	Epidote	Kaolinite	Mica	Molybdenite	Nickeline	None	Not in a structural group	Pyrite	Quartz
Rocksalt	Smectite-vermiculite	Sphalerite	Tetrahedrite

Actinolite ()*	Andalusite ()*	Anhydrite ()*	Argentojarosite ()*	Beudantite ()*
Calcite ()*	Chalcocite ()*	Chalcopyrite ()*	Copper ()*	Covellite ()*
Epidote ()*	Galena ()*	Goethite ()*	Hematite ()*	Jarosite ()*
Kaolinite ()*	Molybdenite ()*	Montmorillonite ()*	Muscovite ()*	Pyrite ()*
Pyrrhotite ()*	Quartz ()*	Siderite ()*	Sphalerite ()*	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 C Ca Cu Fe H K Mg Mo Na O Pb S Sb Si Zn

Elements from minerals reported directly at this locality: Ag Al As C Ca Cu Fe H K Mg Mo Na O Pb S Sb Si Zn

Structural Groups for minerals in this locality:
Alunite Amphibole Andalusite Calcite Chalcopyrite Clay Clinozoisite Copper Corundum Covellite
Diaspore Epidote Kaolinite Mica Molybdenite Nickeline None Not in a structural group Pyrite Quartz
Rocksalt Smectite-vermiculite Sphalerite Tetrahedrite

25 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂	75	5	3419
Andalusite ()*	Andalusite	Al₂SiO₅	75	5	1310
Anhydrite ()*	Not in a structural group	Ca(SO₄)	75	5	1588
Argentojarosite ()*	Alunite	AgFe³⁺₃(SO₄)₂(OH)₆	75	5	58
Beudantite ()*	Alunite	PbFe³⁺₃(AsO₄)(SO₄)(OH)₆	75	5	413
Calcite ()*	Calcite	Ca(CO₃)	75	5	27770
Chalcocite ()*	None	Cu₂S	75	5	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	75	5	27198
Copper ()*	Copper	Cu	75	5	3846
Covellite ()*	Covellite	CuS	75	5	4165
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	75	5	8173
Galena ()*	Rocksalt	PbS	75	5	24243
Goethite ()*	Diaspore	FeO(OH)	75	5	7437
Hematite ()*	Corundum	Fe₂O₃	75	5	14640
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆	75	5	2228
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	75	5	5591
Molybdenite ()*	Molybdenite	MoS₂	75	5	5800
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O	75	5	1508
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	75	5	17380
Pyrite ()*	Pyrite	FeS₂	75	5	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	75	5	9056
Quartz ()*	Quartz	SiO₂	75	5	61156
Siderite ()*	Calcite	Fe(CO₃)	75	5	6417
Sphalerite ()*	Sphalerite	ZnS	75	5	21482
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	75	5	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-00242	75	5	75									Actinolite, Calcite, Chalcocite, Chalcopyrite, Epidote, Galena, Montmorillonite, Pyrite, Sphalerite	Cu	199759	Round Top Prospect (incl. Tim's Greisen Prospect), Kaiyuh District, Yukon-Koyukuk Census Area, Alaska, USA	Round Top	Singer et al. (2008)		USGSOFR2008_1155

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...