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:
North Fork Cu Deposit, North Fork Of The Snoqualmie River, King Co., Washington, USA

Oldest recorded age at locality: 18
Youngest recorded age at locality: 18

mindat Locality ID: 209835
mindat URL: http://www.mindat.org/loc-209835.html

Tectonic Settings:

Total number of sublocalities beneath "North Fork Cu Deposit, North Fork Of The Snoqualmie River, King Co., Washington, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 47°40'39"N
Longitude: 121°38'11"W
Decimal Degree (lat, lon): 47.6775,-121.63638888889

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.

Brochantite	Chalcopyrite	Clay	Clinozoisite	Copper	Diaspore	Digenite	Epidote	Malachite	Mica
Molybdenite	Nickeline	None	Not in a structural group	Pyrite	Scheelite	Sphalerite	Spinel

Azurite ()*	Bornite ()*	Brochantite ()*	Chalcopyrite ()*	Digenite ()*
Epidote ()*	Goethite ()*	Gold ()*	Magnetite ()*	Malachite ()*
Molybdenite ()*	Muscovite ()*	Pyrite ()*	Pyrrhotite ()*	Scheelite ()*
Sphalerite ()*

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 Au C Ca Cu Fe H K Mo O S Si W Zn

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

Structural Groups for minerals in this locality:
Brochantite Chalcopyrite Clay Clinozoisite Copper Diaspore Digenite Epidote Malachite Mica
Molybdenite Nickeline None Not in a structural group Pyrite Scheelite Sphalerite Spinel

16 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	18	18	5509
Bornite ()*	None	Cu₅FeS₄	18	18	5516
Brochantite ()*	Brochantite	Cu₄(SO₄)(OH)₆	18	18	1633
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	18	18	27198
Digenite ()*	Digenite	Cu_1.8S	18	18	1027
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	18	18	8173
Goethite ()*	Diaspore	FeO(OH)	18	18	7437
Gold ()*	Copper	Au	18	18	30554
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	18	18	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	18	18	12537
Molybdenite ()*	Molybdenite	MoS₂	18	18	5800
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	18	18	17380
Pyrite ()*	Pyrite	FeS₂	18	18	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	18	18	9056
Scheelite ()*	Scheelite	Ca(WO₄)	18	18	4894
Sphalerite ()*	Sphalerite	ZnS	18	18	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
	PorphCu-00632	18	18	18									Bornite, Brochantite, Chalcopyrite, Digenite, Epidote, Gold, Magnetite, Molybdenite, Pyrite, Pyrrhotite, Scheelite, Sphalerite	Cu	209835	North Fork Cu Deposit, North Fork Of The Snoqualmie River, King Co., Washington, USA	North Fork Snoqualmie River	Singer et al. (2008)		USGSOFR2008_1155

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...