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:
Seward Peninsula, Nome Census Area, Alaska, USA

Oldest recorded age at locality: 74.7
Youngest recorded age at locality: 71.5

mindat Locality ID: 51523
mindat URL: http://www.mindat.org/loc-51523.html

Tectonic Settings:

Total number of sublocalities beneath "Seward Peninsula, Nome Census Area, Alaska, USA": 4
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Aggie Creek Meteorite
Brooks Mountain
York Range

Latitude: 65°43'36"N
Longitude: 166°41'47"W
Decimal Degree (lat, lon): 65.726666666667,-166.69638888889

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.

Arsenopyrite	Calcite	Clay	Clinozoisite	Corundum	Diaspore	Dumortierite	Epidote	Feldspar	Fluorite
Hulsite	Humite	Iron	Ludwigite	Mica	Nickeline	None	Perovskite	Pertsevite	Pyrite
Pyroxene	Quartz	Rocksalt	Rutile	Sphalerite	Spinel	Stibnite	Vesuvianite	Zircon

Aluminomagnesiohulsite ()*	Anorthite ()*	Arsenopyrite ()*	Azoproite ()*	Calcite ()*
Cassiterite ()*	Chondrodite ()*	Diopside ()*	Dumortierite ()*	Epidote ()*
Fluoborite ()*	Fluorite ()*	Galena ()*	Goethite ()*	Hedenbergite ()*
Hulsite ()*	Ilmenite ()*	Iron ()*	Kotoite ()*	Ludwigite ()*
Maghemite ()*	Magnesiohulsite ()*	Magnetite ()*	Nordenskiöldine ()*	Pertsevite-(F) ()*
Pertsevite-(OH) ()*	Phlogopite ()*	Pyrite ()*	Pyrrhotite ()*	Quartz ()*
Rutile ()*	Schoenfliesite ()*	Siderophyllite ()*	Sphalerite ()*	Spinel ()*
Stibnite ()*	Suanite ()*	Taenite ()*	Vesuvianite ()*	Vonsenite ()*
Zircon ()*

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: Al As B C Ca F Fe H K Mg Na Ni O Pb S Sb Si Sn Ti Zn Zr

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Arsenopyrite Calcite Clay Clinozoisite Corundum Diaspore Dumortierite Epidote Feldspar Fluorite
Hulsite Humite Iron Ludwigite Mica Nickeline None Perovskite Pertsevite Pyrite
Pyroxene Quartz Rocksalt Rutile Sphalerite Spinel Stibnite Vesuvianite Zircon

41 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
Aluminomagnesiohulsite ()*	Hulsite	Mg₂AlO₂(BO₃)			1	132331	3
Anorthite ()*	Feldspar	Ca(Al₂Si₂O₈)			1	132331	1036
Arsenopyrite ()*	Arsenopyrite	FeAsS	74.7	71.5	2	132331,132333	9052
Azoproite ()*	Ludwigite	Mg₂[(Ti,Mg),Fe³⁺]O₂(BO₃)			1	132331	3
Calcite ()*	Calcite	Ca(CO₃)			1	132331	27770
Cassiterite ()*	Rutile	SnO₂	74.7	71.5	1	132333	5171
Chondrodite ()*	Humite	Mg₅(SiO₄)₂F₂			1	132331	285
Diopside ()*	Pyroxene	CaMgSi₂O₆			1	132331	4135
Dumortierite ()*	Dumortierite	AlAl₆BSi₃O₁₈	74.7	71.5	1	132333	231
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)			1	132331	8173
Fluoborite ()*	None	Mg₃(BO₃)F₃			1	132331	52
Fluorite ()*	Fluorite	CaF₂	74.7	71.5	2	132331,132333	9617
Galena ()*	Rocksalt	PbS			1	132331	24243
Goethite ()*	Diaspore	FeO(OH)			1	132331	7437
Hedenbergite ()*	Pyroxene	CaFe²⁺Si₂O₆			1	132331	741
Hulsite ()*	Hulsite	Fe²⁺₂Fe³⁺O₂(BO₃)	74.7	71.5	2	132331,132333	15
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	74.7	71.5	1	132333	5433
Iron ()*	Iron	Fe			1	132330	1089
Kotoite ()*	None	Mg₃(BO₃)₂			1	132331	20
Ludwigite ()*	Ludwigite	Mg₂Fe³⁺O₂(BO₃)	74.7	71.5	2	132331,132333	134
Maghemite ()*	Spinel	(Fe³⁺_0.67 _0.33)Fe³⁺₂O₄			1	132331	229
Magnesiohulsite ()*	Hulsite	Mg₂Fe³⁺O₂(BO₃)			1	132331	3
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	74.7	71.5	2	132331,132333	14899
Nordenskiöldine ()*	None	CaSn(BO₃)₂	74.7	71.5	2	132331,132333	16
Pertsevite-(F) ()*	Pertsevite	Mg₂(BO₃)F			1	132331	8
Pertsevite-(OH) ()*	Pertsevite	Mg₂(BO₃)(OH)			1	132331	3
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂			1	132331	2273
Pyrite ()*	Pyrite	FeS₂	74.7	71.5	1	132333	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	74.7	71.5	2	132331,132333	9056
Quartz ()*	Quartz	SiO₂	74.7	71.5	1	132333	61156
Rutile ()*	Rutile	TiO₂	74.7	71.5	1	132333	5614
Schoenfliesite ()*	Perovskite	MgSn(OH)₆			1	132331	10
Siderophyllite ()*	Mica	KFe²⁺₂Al(Si₂Al₂)O₁₀(OH)₂			1	132331	92
Sphalerite ()*	Sphalerite	ZnS			1	132331	21482
Spinel ()*	Spinel	MgAl₂O₄			1	132331	1934
Stibnite ()*	Stibnite	Sb₂S₃			1	132331	3418
Suanite ()*	None	Mg₂B₂O₅			1	132331	16
Taenite ()*	None	(Ni,Fe)			1	132330	703
Vesuvianite ()*	Vesuvianite	(Ca,Na)₁₉(Al,Mg,Fe)₁₃(SiO₄)₁₀(Si₂O₇)₄(OH,F,O)₁₀			1	132331	1395
Vonsenite ()*	Ludwigite	Fe²⁺₂Fe³⁺O₂(BO₃)	74.7	71.5	2	132331,132333	62
Zircon ()*	Zircon	Zr(SiO₄)	74.7	71.5	1	132333	5251

3 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Source	MinDat Locality ID	Dated Locality (Max Age)	Reference	Reference ID
USGS-Rb-Sr-05533	74.7	71.5	73.1±1.6	Rb-Sr	age of intrusion	whole rock	69237	Ear Mountain, York Range, Seward Peninsula, Nome Census Area, Alaska, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-05534	74.7	71.5	73.1±1.6	Rb-Sr	age of intrusion	whole rock	69237	Ear Mountain, York Range, Seward Peninsula, Nome Census Area, Alaska, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-05535	74.7	71.5	73.1±1.6	Rb-Sr	age of intrusion	whole rock	69237	Ear Mountain, York Range, Seward Peninsula, Nome Census Area, Alaska, USA	USGS-Rb-Sr	USGS-Rb-Sr

Sample	Source Locality	Reference URL
R070537	Brooks Mountain, Seward Peninsula, Nome Census Area, Alaska, USA	https://rruff.info/R070537
R130016	Brooks Mountain, Seward Peninsula, Nome Census Area, Alaska, USA	https://rruff.info/R130016
R130017	Brooks Mountain, Seward Peninsula, Nome Census Area, Alaska, USA	https://rruff.info/R130017

All locality data graciously provided by mindat.org

All age data...