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:
Larsen Ridge; Lucky 13 Prospect, Goodpaster District, Southeast Fairbanks Census Area, Alaska, USA

Oldest recorded age at locality: 109
Youngest recorded age at locality: 107

mindat Locality ID: 198452
mindat URL: http://www.mindat.org/loc-198452.html

Tectonic Settings:

Total number of sublocalities beneath "Larsen Ridge; Lucky 13 Prospect, Goodpaster District, Southeast Fairbanks Census Area, Alaska, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 64°14'22"N
Longitude: 143°53'31"W
Decimal Degree (lat, lon): 64.239444444444,-143.89194444444

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.

Chalcopyrite	Clinozoisite	Epidote	Molybdenite	Nickeline	None	Pyrite	Quartz	Rocksalt	Scheelite
Sphalerite	Spinel

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 Ca Cu Fe H Mo O Pb S Si W Zn

Elements from minerals reported directly at this locality: Al Ca Cu Fe H Mo O Pb S Si W Zn

Structural Groups for minerals in this locality:
Chalcopyrite Clinozoisite Epidote Molybdenite Nickeline None Pyrite Quartz Rocksalt Scheelite
Sphalerite Spinel

11 IMA Minerals at location:

Chalcopyrite ()*	Epidote ()*	Galena ()*	Magnetite ()*	Molybdenite ()*
Powellite ()*	Pyrite ()*	Pyrrhotite ()*	Quartz ()*	Scheelite ()*
Sphalerite ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	109	107	27198
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	109	107	8173
Galena ()*	Rocksalt	PbS	109	107	24243
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	109	107	14899
Molybdenite ()*	Molybdenite	MoS₂	109	107	5800
Powellite ()*	Scheelite	Ca(MoO₄)	109	107	494
Pyrite ()*	Pyrite	FeS₂	109	107	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	109	107	9056
Quartz ()*	Quartz	SiO₂	109	107	61156
Scheelite ()*	Scheelite	Ca(WO₄)	109	107	4894
Sphalerite ()*	Sphalerite	ZnS	109	107	21482

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
	Bradley_2012_013	109	107	108±1	U/Pb			monazite			Yes				203137	Goodpaster District, Southeast Fairbanks Census Area, Alaska, USA	[Goodpaster Min. Dist]	McCauley and Bradley (2014)	10.3749/canmin.52.2.183	CM52_183

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...