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:
Sweet Grass Hills, Liberty Co., Montana, USA

mindat Locality ID: 186141
mindat URL: http://www.mindat.org/loc-186141.html

Tectonic Settings:

Total number of sublocalities beneath "Sweet Grass Hills, Liberty Co., Montana, USA": 5
Total number of bottom-level sublocalities: 4

Number of Child Localities: 4
Child Localities:
Halfbreed Creek
Sage Creek
Silver Halo
Tootsie Creek Deposits

Latitude: 48°52'33"N
Longitude: 111°7'7"W
Decimal Degree (lat, lon): 48.875833333333,-111.11861111111

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.

Apatite	Aragonite	Calcite	Clinozoisite	Epidote	Feldspar	Fluorite	None	Pectolite	Pyrite
Pyroxene	Quartz	Rocksalt	Rutile	Spinel

Aegirine ()*	Albite ()*	Alunite ()*	Calcite ()*	Cassiterite ()*
Cerussite ()*	Epidote ()*	Fluorapatite ()*	Fluorite ()*	Galena ()*
Magnetite ()*	Narsarsukite ()*	Orthoclase ()*	Pectolite ()*	Pyrite ()*
Quartz ()*

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 C Ca F Fe H K Na O P Pb S Si Sn Ti

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Apatite Aragonite Calcite Clinozoisite Epidote Feldspar Fluorite None Pectolite Pyrite
Pyroxene Quartz Rocksalt Rutile Spinel

16 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Aegirine ()*	Pyroxene	NaFe³⁺Si₂O₆	2	230480,230481	1022
Albite ()*	Feldspar	Na(AlSi₃O₈)	1	230481	8803
Alunite ()*	None	KAl₃(SO₄)₂(OH)₆	1	230480	966
Calcite ()*	Calcite	Ca(CO₃)	1	230481	27770
Cassiterite ()*	Rutile	SnO₂	1	230481	5171
Cerussite ()*	Aragonite	Pb(CO₃)	1	230481	4979
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	1	230480	8173
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F	1	230480	2740
Fluorite ()*	Fluorite	CaF₂	2	230483,230484	9617
Galena ()*	Rocksalt	PbS	2	230480,230481	24243
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	1	230484	14899
Narsarsukite ()*	None	Na₂(Ti,Fe³⁺)Si₄(O,F)₁₁	2	230480,230481	34
Orthoclase ()*	Feldspar	K(AlSi₃O₈)	1	230481	2349
Pectolite ()*	Pectolite	NaCa₂Si₃O₈(OH)	2	230480,230481	363
Pyrite ()*	Pyrite	FeS₂	1	230484	39462
Quartz ()*	Quartz	SiO₂	3	230480,230481,230484	61156

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...