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:
Mount Baker District, Whatcom Co., Washington, USA

Oldest recorded age at locality: 135
Youngest recorded age at locality: 0.012

mindat Locality ID: 23999
mindat URL: http://www.mindat.org/loc-23999.html

Tectonic Settings:

Total number of sublocalities beneath "Mount Baker District, Whatcom Co., Washington, USA": 23
Total number of bottom-level sublocalities: 13

Number of Child Localities: 9
Child Localities:
Bearpaw Mountain
Boulder Creek
Glacier
Kendall
Mount Baker
Mount Larrabee
Mount Sefrit
Swift Creek
Twin Lakes

Latitude: 48°54'14"N
Longitude: 121°48'41"W
Decimal Degree (lat, lon): 48.903888888889,-121.81138888889

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	Chalcopyrite	Clay	Copper	Malachite	Melonite	Nickeline	None	Not in a structural group
Pyrite	Quartz	Rocksalt	Serpentine	Sphalerite	Spinel	Sulphur	Tetradymite	Tetrahedrite

Antigorite ()*	Arsenopyrite ()*	Azurite ()*	Calaverite ()*	Calcite ()*
Chalcocite ()*	Chalcopyrite ()*	Chromite ()*	Chrysotile ()*	Dolomite ()*
Galena ()*	Gold ()*	Magnetite ()*	Malachite ()*	Massicot ()*
Pyrite ()*	Pyrrhotite ()*	Quartz ()*	Siderite ()*	Silver ()*
Sphalerite ()*	Sulphur ()*	Tellurobismuthite ()*	Tetrahedrite-(Zn) ()*

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: Ag As Au Bi C Ca Cr Cu Fe H Mg O Pb S Sb Si Te Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Arsenopyrite Calcite Chalcopyrite Clay Copper Malachite Melonite Nickeline None Not in a structural group
Pyrite Quartz Rocksalt Serpentine Sphalerite Spinel Sulphur Tetradymite Tetrahedrite

24 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
Antigorite ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	135	135	1	286276	708
Arsenopyrite ()*	Arsenopyrite	FeAsS	0.211	0.105	2	286269,286284	9052
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂			1	286283	5509
Calaverite ()*	Melonite	AuTe₂			1	286290	361
Calcite ()*	Calcite	Ca(CO₃)			4	286274,286281,286282,286284	27770
Chalcocite ()*	None	Cu₂S			1	286283	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	0.211	0.105	7	286269,286272,286274,286281,286282,286283,286284	27198
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	135	135	2	286272,286276	3902
Chrysotile ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	135	135	1	286276	951
Dolomite ()*	None	CaMg(CO₃)₂	0.211	0.105	1	286269	9895
Galena ()*	Rocksalt	PbS	0.211	0.105	4	286269,286282,286283,286284	24243
Gold ()*	Copper	Au	5.3	1.117	5	286280,286281,286286,286288,286290	30554
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	135	135	2	286272,286276	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂			2	286283,286284	12537
Massicot ()*	None	PbO			1	286283	202
Pyrite ()*	Pyrite	FeS₂	5.3	0.012	11	286269,286272,286274,286278,286280,286281,286282,286283,286284,286288,286290	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈			4	286281,286283,286284,286290	9056
Quartz ()*	Quartz	SiO₂	0.211	0.105	9	286269,286274,286280,286281,286282,286283,286284,286286,286290	61156
Siderite ()*	Calcite	Fe(CO₃)			1	286284	6417
Silver ()*	Copper	Ag	0.211	0.105	2	286269,286281	5186
Sphalerite ()*	Sphalerite	ZnS	0.211	0.105	4	286269,286282,286283,286284	21482
Sulphur ()*	Sulphur	S	0.043	0.012	2	286270,286278	2045
Tellurobismuthite ()*	Tetradymite	Bi₂Te₃			2	286281,286290	276
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	0.211	0.105	1	286269	5317

11 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Sample Source	Sample Num	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID
NAVDAT-75379	0.123	0.105	0.114±0.009	whole rock	75379		28933	Great Excelsior Mine (Lincoln Mine; President Mine; Excelsior Mine; Wells Creek Mine), Bearpaw Mountain, Mount Baker District, Whatcom Co., Washington, USA		NAVDAT	NAVDAT
NAVDAT-75475	0.211	0.193	0.202±0.009	whole rock	75475		28933	Great Excelsior Mine (Lincoln Mine; President Mine; Excelsior Mine; Wells Creek Mine), Bearpaw Mountain, Mount Baker District, Whatcom Co., Washington, USA		NAVDAT	NAVDAT
podchrome-00485	135	135	Jurassic-Cretaceous			Cr	28906	Breckenridge Creek Mine (Sumas Mountain Mine; Stein Mine), Kendall, Mount Baker District, Whatcom Co., Washington, USA	Breckenridge Creek	Moiser et al. (2012)	USGSSIR2012_5157
NAVDAT-75404	0.043	0.012	0.03+0.013/-0.018		75404		204137	Sherman Crater, Mount Baker, Mount Baker District, Whatcom Co., Washington, USA		NAVDAT	NAVDAT
NAVDAT-75405	0.043	0.012	0.03+0.013/-0.018		75405		204137	Sherman Crater, Mount Baker, Mount Baker District, Whatcom Co., Washington, USA		NAVDAT	NAVDAT
NAVDAT-75406	0.043	0.012	0.03+0.013/-0.018		75406		204137	Sherman Crater, Mount Baker, Mount Baker District, Whatcom Co., Washington, USA		NAVDAT	NAVDAT
NAVDAT-75507	0.043	0.012	0.03+0.013/-0.018		75507		204137	Sherman Crater, Mount Baker, Mount Baker District, Whatcom Co., Washington, USA		NAVDAT	NAVDAT
NAVDAT-75508	0.043	0.012	0.03+0.013/-0.018		75508		204137	Sherman Crater, Mount Baker, Mount Baker District, Whatcom Co., Washington, USA		NAVDAT	NAVDAT
NAVDAT-75509	0.043	0.012	0.03+0.013/-0.018		75509		204137	Sherman Crater, Mount Baker, Mount Baker District, Whatcom Co., Washington, USA		NAVDAT	NAVDAT
NAVDAT-75648	5.3	3.6	4.45±0.85		75648		28915	Fourth Of July Mine, Swift Creek, Mount Baker District, Whatcom Co., Washington, USA		NAVDAT	NAVDAT
NAVDAT-88041	1.193	1.117	1.155±0.038	plagioclase	88041		28915	Fourth Of July Mine, Swift Creek, Mount Baker District, Whatcom Co., Washington, USA		NAVDAT	NAVDAT

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...