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:
Anchorage, Alaska, USA

Oldest recorded age at locality: 164
Youngest recorded age at locality: 164

mindat Locality ID: 130558
mindat URL: http://www.mindat.org/loc-130558.html

Tectonic Settings:

Total number of sublocalities beneath "Anchorage, Alaska, USA": 38
Total number of bottom-level sublocalities: 34

Number of Child Localities: 4
Child Localities:
Anchorage District
Girdwood District
Hope District
Prince William Sound District

Latitude: 60°59'10"N
Longitude: 149°2'36"W
Decimal Degree (lat, lon): 60.986111111111,-149.04333333333

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.

Aragonite	Arsenopyrite	Calcite	Chalcopyrite	Copper	Malachite	Marcasite	Molybdenite	Nickeline	None
Pyrite	Quartz	Rocksalt	Scheelite	Sphalerite	Spinel	Zircon

Arsenopyrite ()*	Calcite ()*	Cerussite ()*	Chalcopyrite ()*	Chromite ()*
Copper ()*	Galena ()*	Gold ()*	Graphite ()*	Magnetite ()*
Malachite ()*	Marcasite ()*	Molybdenite ()*	Pyrite ()*	Pyrrhotite ()*
Quartz ()*	Scheelite ()*	Scorodite ()*	Sphalerite ()*	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: As Au C Ca Cr Cu Fe H Mo O Pb S Si W Zn Zr

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Aragonite Arsenopyrite Calcite Chalcopyrite Copper Malachite Marcasite Molybdenite Nickeline None
Pyrite Quartz Rocksalt Scheelite Sphalerite Spinel Zircon

20 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
Arsenopyrite ()*	Arsenopyrite	FeAsS			9	128905,128907,128911,128923,128924,128925,128927,128928,128938	9052
Calcite ()*	Calcite	Ca(CO₃)			9	128907,128911,128915,128923,128924,128925,128927,128931,128934	27770
Cerussite ()*	Aragonite	Pb(CO₃)			2	128923,128928	4979
Chalcopyrite ()*	Chalcopyrite	CuFeS₂			12	128907,128909,128911,128912,128923,128927,128928,128931,128933,128934,128936,128938	27198
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	164	164	4	128910,128912,128917,128920	3902
Copper ()*	Copper	Cu			2	128925,128933	3846
Galena ()*	Rocksalt	PbS			13	128907,128911,128912,128919,128923,128924,128925,128927,128928,128931,128934,128936,128939	24243
Gold ()*	Copper	Au			25	128903,128904,128905,128906,128907,128909,128912,128913,128914,128915,128916,128918,128921,128923,128924,128925,128927,128928,128931,128932,128933,128934,128936,128938,128939	30554
Graphite ()*	None	C			1	128936	2812
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄			3	128923,128926,128929	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂			2	128907,128927	12537
Marcasite ()*	Marcasite	FeS₂			1	128925	5674
Molybdenite ()*	Molybdenite	MoS₂			3	128923,128928,128929	5800
Pyrite ()*	Pyrite	FeS₂			18	128905,128907,128909,128912,128915,128919,128923,128924,128925,128926,128927,128928,128929,128931,128934,128936,128938,128939	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈			4	128923,128925,128928,128936	9056
Quartz ()*	Quartz	SiO₂			16	128905,128907,128912,128915,128916,128919,128923,128924,128925,128927,128928,128931,128934,128936,128938,128939	61156
Scheelite ()*	Scheelite	Ca(WO₄)			3	128904,128926,128932	4894
Scorodite ()*	None	Fe³⁺(AsO₄)·2H₂O			2	128923,128928	1153
Sphalerite ()*	Sphalerite	ZnS			8	128907,128911,128923,128924,128925,128927,128931,128936	21482
Zircon ()*	Zircon	Zr(SiO₄)			2	128926,128929	5251

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
	podchrome-00889	164	164	Jurassic										Cr	202878	West Twin Peak; West Ridge; Eklutna Creek Occurrence, Anchorage District, Anchorage, Alaska, USA	Eklutna 37	Moiser et al. (2012)		USGSSIR2012_5157

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...