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:
Girdwood District, Anchorage, Alaska, USA

mindat Locality ID: 143814
mindat URL: http://www.mindat.org/loc-143814.html

Tectonic Settings:

Total number of sublocalities beneath "Girdwood District, Anchorage, Alaska, USA": 7
Total number of bottom-level sublocalities: 7

Number of Child Localities: 7
Child Localities:
Agostino Mine
Bahrenberg Mine
Brenner Mine
California Creek
Eagle River Mine
Jewell Mine
Potter Creek

Latitude: 61°2'54"N
Longitude: 149°12'30"W
Decimal Degree (lat, lon): 61.048333333333,-149.20833333333

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 ()*	Copper ()*
Galena ()*	Gold ()*	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 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

18 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Arsenopyrite ()*	Arsenopyrite	FeAsS	5	128923,128924,128925,128927,128928	9052
Calcite ()*	Calcite	Ca(CO₃)	4	128923,128924,128925,128927	27770
Cerussite ()*	Aragonite	Pb(CO₃)	2	128923,128928	4979
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	3	128923,128927,128928	27198
Copper ()*	Copper	Cu	1	128925	3846
Galena ()*	Rocksalt	PbS	5	128923,128924,128925,128927,128928	24243
Gold ()*	Copper	Au	5	128923,128924,128925,128927,128928	30554
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	3	128923,128926,128929	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	1	128927	12537
Marcasite ()*	Marcasite	FeS₂	1	128925	5674
Molybdenite ()*	Molybdenite	MoS₂	3	128923,128928,128929	5800
Pyrite ()*	Pyrite	FeS₂	7	128923,128924,128925,128926,128927,128928,128929	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	3	128923,128925,128928	9056
Quartz ()*	Quartz	SiO₂	5	128923,128924,128925,128927,128928	61156
Scheelite ()*	Scheelite	Ca(WO₄)	1	128926	4894
Scorodite ()*	None	Fe³⁺(AsO₄)·2H₂O	2	128923,128928	1153
Sphalerite ()*	Sphalerite	ZnS	4	128923,128924,128925,128927	21482
Zircon ()*	Zircon	Zr(SiO₄)	2	128926,128929	5251

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...