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:
East Boulder Mine (East Boulder Project Prospect; Frog Pond Adit; Frog Pond Audit; Jack Pine Project; J-M Reef), Stillwater Complex, Sweet Grass Co., Montana, USA

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

mindat Locality ID: 161241
mindat URL: http://www.mindat.org/loc-161241.html

Tectonic Settings:

Total number of sublocalities beneath "East Boulder Mine (East Boulder Project Prospect; Frog Pond Adit; Frog Pond Audit; Jack Pine Project; J-M Reef), Stillwater Complex, Sweet Grass Co., Montana, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 45°30'29"N
Longitude: 110°5'16"W
Decimal Degree (lat, lon): 45.508055555556,-110.08777777778

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	Auricupride	Chalcopyrite	Clay	Clinozoisite	Epidote	Melonite	Nickeline	None	Pentlandite
Perovskite	Potarite	Pyrite	Pyroxene	Talc

Braggite ()*	Chalcopyrite ()*	Cooperite ()*	Enstatite ()*	Epidote ()*
Erlichmanite ()*	Kotulskite ()*	Moncheite ()*	Pentlandite ()*	Pyrite ()*
Pyrrhotite ()*	Talc ()*	Tetraferroplatinum ()*	Tremolite ()*	Vysotskite ()*
Zvyagintsevite ()*

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 Bi Ca Cu Fe H Mg Ni O Os Pb Pd Pt S Si Te

Elements from minerals reported directly at this locality: Al Bi Ca Cu Fe H Mg Ni O Os Pb Pd Pt S Si Te

Structural Groups for minerals in this locality:
Amphibole Auricupride Chalcopyrite Clay Clinozoisite Epidote Melonite Nickeline None Pentlandite
Perovskite Potarite Pyrite Pyroxene Talc

16 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Braggite ()*	None	PdPt₃S₄	2906	2681	101
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	2906	2681	27198
Cooperite ()*	None	PtS	2906	2681	124
Enstatite ()*	Pyroxene	Mg₂Si₂O₆	2906	2681	944
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	2906	2681	8173
Erlichmanite ()*	Pyrite	OsS₂	2906	2681	110
Kotulskite ()*	Nickeline	Pd(Te,Bi)_2-x (x ≈ 0.4)	2906	2681	116
Moncheite ()*	Melonite	Pt(Te,Bi)₂	2906	2681	133
Pentlandite ()*	Pentlandite	(Ni,Fe)₉S₈	2906	2681	1512
Pyrite ()*	Pyrite	FeS₂	2906	2681	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	2906	2681	9056
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	2906	2681	3337
Tetraferroplatinum ()*	Potarite	PtFe	2906	2681	66
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	2906	2681	2562
Vysotskite ()*	None	PdS	2906	2681	53
Zvyagintsevite ()*	Auricupride Perovskite	Pd₃Pb	2906	2681	32

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...