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 District, Lake Co., Colorado, USA

Oldest recorded age at locality: 40
Youngest recorded age at locality: 30

mindat Locality ID: 50043
mindat URL: http://www.mindat.org/loc-50043.html

Tectonic Settings:

Total number of sublocalities beneath "Twin Lakes District, Lake Co., Colorado, USA": 22
Total number of bottom-level sublocalities: 20

Number of Child Localities: 17
Child Localities:
Bartell Mines
Bartlett Shaft
Bengal Tiger
Box Creek
Cochran Helen H
Gordon Mine
Halfmoon
Hayden Ranch Placers
Placer Mine
Sawmill Gulch Placers
Smith - Bullard Mines; Inc.
Two Bit Gulch Placers
Unknown Gold Occurrence (MRDS - 10016290)
Unknown Gold Occurrence (MRDS - 10016299)
Unknown Manganese (MRDS - 10166561)
Unknown Zinc - Silver - Lead Occurrence (MRDS - 10016298)
Vesuvius

Latitude: 39°6'21"N
Longitude: 106°23'31"W
Decimal Degree (lat, lon): 39.105833333333,-106.39194444444

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.

Clay	None	Not in a structural group	Pyrite	Quartz	Rocksalt	Talc

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 Fe H Mg O Pb S Si

Elements from minerals reported directly at this locality: Al H Mg O Si

Structural Groups for minerals in this locality:
Clay None Not in a structural group Pyrite Quartz Rocksalt Talc

5 IMA Minerals at location:

Galena ()*	Pyrite ()*	Quartz ()*	Sillimanite ()*	Talc ()*

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
Galena ()*	Rocksalt	PbS			1	191737	24243
Pyrite ()*	Pyrite	FeS₂			1	191737	39462
Quartz ()*	Quartz	SiO₂			1	191737	61156
Sillimanite ()*	Not in a structural group	Al₂SiO₅	40	30	0		1516
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	40	30	0		3337

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
	NAVDAT-35628	40	30	35±5					35628						115392	Unknown Gold Occurrence (MRDS - 10016299), Twin Lakes District, Lake Co., Colorado, USA		NAVDAT		NAVDAT

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...