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:
Iron Mountain, Stillwater Complex, Sweet Grass Co., Montana, USA

Oldest recorded age at locality: 2906
Youngest recorded age at locality: 2681

mindat Locality ID: 305375
mindat URL: http://www.mindat.org/loc-305375.html

Tectonic Settings:

Total number of sublocalities beneath "Iron Mountain, Stillwater Complex, Sweet Grass Co., Montana, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 45°24'15"N
Longitude: 110°3'48"W
Decimal Degree (lat, lon): 45.404166666667,-110.06333333333

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.

Chalcopyrite	Copper	Corundum	Melonite	Nickeline	None	Pentlandite	Pyrite	Spinel	Ullmannite

Chalcopyrite ()*	Chromite ()*	Gold ()*	Hessite ()*	Ilmenite ()*
Mackinawite ()*	Melonite ()*	Merenskyite ()*	Michenerite ()*	Pentlandite ()*
Pyrite ()*	Pyrrhotite ()*	Violarite ()*

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 Au Bi Cr Cu Fe Ni O Pd S Te Ti

Elements from minerals reported directly at this locality: Ag Au Bi Cr Cu Fe Ni O Pd S Te Ti

Structural Groups for minerals in this locality:
Chalcopyrite Copper Corundum Melonite Nickeline None Pentlandite Pyrite Spinel Ullmannite

13 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	2906	2681	27198
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	2906	2681	3902
Gold ()*	Copper	Au	2906	2681	30554
Hessite ()*	None	Ag₂Te	2906	2681	804
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	2906	2681	5433
Mackinawite ()*	None	(Fe,Ni)_1+xS (x = 0-0.07)	2906	2681	451
Melonite ()*	Melonite	NiTe₂	2906	2681	207
Merenskyite ()*	Melonite	PdTe₂	2906	2681	155
Michenerite ()*	Ullmannite	PdBiTe	2906	2681	114
Pentlandite ()*	Pentlandite	(Ni,Fe)₉S₈	2906	2681	1512
Pyrite ()*	Pyrite	FeS₂	2906	2681	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	2906	2681	9056
Violarite ()*	Spinel	FeNi₂S₄	2906	2681	380

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
	JP35_1717-00001	2906	2754	2830±76	Re-Os		high		81MVL217, 801M02, 355-64-556.0, 355-64-684.5, 355-		Yes				3883	Stillwater Complex, Nye, Stillwater Co., Montana, USA	Stillwater PGE deposit, Montana, USA	Lambert et al. (1994)	10.1093/petrology/35.6.1717	JP35_1717
	JP35_1717-00002	2721	2681	2701±20	Sm-Nd		high				Yes				3883	Stillwater Complex, Nye, Stillwater Co., Montana, USA	Stillwater PGE deposit, Montana, USA	Lambert et al. (1994)	10.1093/petrology/35.6.1717	JP35_1717

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...