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:
Almo Area, Cassia Co., Idaho, USA

Oldest recorded age at locality: 29.6
Youngest recorded age at locality: 27.3

mindat Locality ID: 282414
mindat URL: http://www.mindat.org/loc-282414.html

Tectonic Settings:

Total number of sublocalities beneath "Almo Area, Cassia Co., Idaho, USA": 11
Total number of bottom-level sublocalities: 11

Number of Child Localities: 11
Child Localities:
Almo Basin-Circle Creek No. 1
Almo Basin-Circle Creek No. 2
Almo Basin-Circle Creek No. 3
Almo Basin-Raft River No. 2
Brooks Prospect (Wicked Sisters Claim)
City Of Rocks Mine
City Of Rocks Uranium Deposit
City Of Rocks Uranium Placer Deposit
Idaho Queen No. 1 Occurrence
Pumicite Deposit (MRDS - 10070312)
Pumicite Deposit (MRDS - 10070313)

Latitude: 42°3'58"N
Longitude: 113°40'"W
Decimal Degree (lat, lon): 42.066111111111,-113.66666666667

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	Feldspar	Mica	None	Quartz	Spinel

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 K O Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Clay Feldspar Mica None Quartz Spinel

5 IMA Minerals at location:

Magnetite ()*	Microcline ()*	Muscovite ()*	Orthoclase ()*	Quartz ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	1	206287	14899
Microcline ()*	Feldspar	K(AlSi₃O₈)	1	206286	4924
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	1	206286	17380
Orthoclase ()*	Feldspar	K(AlSi₃O₈)	1	206286	2349
Quartz ()*	Quartz	SiO₂	1	206286	61156

2 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-02655	29.6	27.6	28.6±1	Rb-Sr	age of intrusion		whole rock							135568	Almo Basin-Circle Creek No. 1, Almo Area, Cassia Co., Idaho, USA		USGS-Rb-Sr		USGS-Rb-Sr
	USGS-Rb-Sr-02656	29.3	27.3	28.3±1	Rb-Sr	age of intrusion		whole rock							135568	Almo Basin-Circle Creek No. 1, Almo Area, Cassia Co., Idaho, USA		USGS-Rb-Sr		USGS-Rb-Sr

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...