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:
Horsetooth Mountain Area, Larimer Co., Colorado, USA

Oldest recorded age at locality: 1704.13
Youngest recorded age at locality: 1624.13

mindat Locality ID: 134255
mindat URL: http://www.mindat.org/loc-134255.html

Tectonic Settings:

Total number of sublocalities beneath "Horsetooth Mountain Area, Larimer Co., Colorado, USA": 2
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
A. L. Stein Ranch Uranium Prospect (Stein Ranch Uranium Prospect)
Ball Scheelite Mine

Latitude: 40°33'47"N
Longitude: 105°14'25"W
Decimal Degree (lat, lon): 40.563055555556,-105.24027777778

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.

Amphibole	Clay	Mica	None	Not in a structural group	Scheelite	Tourmaline

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 B Ca Cu Fe H K Na O P Si U W

Elements from minerals reported directly at this locality: Al B Ca Fe H K Na O Si

Structural Groups for minerals in this locality:
Amphibole Clay Mica None Not in a structural group Scheelite Tourmaline

6 IMA Minerals at location:

Ferro-hornblende ()*	Muscovite ()*	Scheelite ()*	Schorl ()*	Sillimanite ()*
Torbernite ()*

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
Ferro-hornblende ()*	Amphibole	Ca₂(Fe²⁺₄Al)(Si₇Al)O₂₂(OH)₂	1704.13	1624.13	0		271
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	1704.13	1624.13	0		17380
Scheelite ()*	Scheelite	Ca(WO₄)	1704.13	1624.13	1	191880	4894
Schorl ()*	Tourmaline	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	1704.13	1624.13	0		2705
Sillimanite ()*	Not in a structural group	Al₂SiO₅	1704.13	1624.13	0		1516
Torbernite ()*	None	Cu(UO₂)₂(PO₄)₂·12H₂O			1	191879	1059

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
	USGS-Rb-Sr-04119	1704.13	1624.13	1664.13±40	Rb-Sr	age of intrusion		whole rock							115455	Ball Scheelite Mine, Horsetooth Mountain Area, Larimer Co., Colorado, USA		USGS-Rb-Sr		USGS-Rb-Sr

All locality data graciously provided by mindat.org

All age data...