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:
Little Annie Mine (Claim: Little Annie), Aspen District (Roaring Fork District), Pitkin Co., Colorado, USA

Oldest recorded age at locality: 52
Youngest recorded age at locality: 52

mindat Locality ID: 118082
mindat URL: http://www.mindat.org/loc-118082.html

Tectonic Settings:

Total number of sublocalities beneath "Little Annie Mine (Claim: Little Annie), Aspen District (Roaring Fork District), Pitkin Co., Colorado, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 39°7'45"N
Longitude: 106°49'30"W
Decimal Degree (lat, lon): 39.129166666667,-106.825

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.

Acanthite	Baryte	Calcite	Copper	None	Polybasite	Quartz	Rocksalt	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: Ag Ba C Ca Cu O Pb S Sb Si Zn

Elements from minerals reported directly at this locality: Ag As Ba C Ca Cu O Pb S Sb Si Zn

Structural Groups for minerals in this locality:
Acanthite Baryte Calcite Copper None Polybasite Quartz Rocksalt Sphalerite

8 IMA Minerals at location:

Acanthite ()*	Baryte ()*	Calcite ()*	Galena ()*	Polybasite ()*
Quartz ()*	Silver ()*	Sphalerite ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Acanthite ()*	Acanthite	Ag₂S	52	52	2793
Baryte ()*	Baryte	Ba(SO₄)	52	52	11547
Calcite ()*	Calcite	Ca(CO₃)	52	52	27770
Galena ()*	Rocksalt	PbS	52	52	24243
Polybasite ()*	Polybasite	[Ag₉CuS₄][(Ag,Cu)₆(Sb,As)₂S₇]	52	52	716
Quartz ()*	Quartz	SiO₂	52	52	61156
Silver ()*	Copper	Ag	52	52	5186
Sphalerite ()*	Sphalerite	ZnS	52	52	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
	sedznpb-00444	52	52	52							Yes				30152	Aspen District (Roaring Fork District), Pitkin Co., Colorado, USA	Aspen	Singer et al. (2009)		USGSOFR2009-1252

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...