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

mindat Locality ID: 275196
mindat URL: http://www.mindat.org/loc-275196.html

Tectonic Settings:

Total number of sublocalities beneath "Twin Lakes, Mount Baker District, Whatcom Co., Washington, USA": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Lone Jack Mine (Mount Baker Mine; Post-Lambert Mine; Brooks-Willis Mine; Boundary Gold Mine)

Latitude: 48°56'41"N
Longitude: 121°37'7"W
Decimal Degree (lat, lon): 48.944722222222,-121.61861111111

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.

Copper	Melonite	Nickeline	None	Pyrite	Quartz	Tetradymite

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: Au Bi Fe O S Si Te

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Copper Melonite Nickeline None Pyrite Quartz Tetradymite

6 IMA Minerals at location:

Calaverite ()*	Gold ()*	Pyrite ()*	Pyrrhotite ()*	Quartz ()*
Tellurobismuthite ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Calaverite ()*	Melonite	AuTe₂	1	286290	361
Gold ()*	Copper	Au	1	286290	30554
Pyrite ()*	Pyrite	FeS₂	1	286290	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	1	286290	9056
Quartz ()*	Quartz	SiO₂	1	286290	61156
Tellurobismuthite ()*	Tetradymite	Bi₂Te₃	1	286290	276

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...