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:
Stillwater Complex, Stillwater Co., Montana, USA

Oldest recorded age at locality: 2661.1
Youngest recorded age at locality: 1667.7

mindat Locality ID: 293190
mindat URL: http://www.mindat.org/loc-293190.html

Tectonic Settings:

Total number of sublocalities beneath "Stillwater Complex, Stillwater Co., Montana, USA": 20
Total number of bottom-level sublocalities: 19

Number of Child Localities: 19
Child Localities:
Little Rocky Creek Ni-Cu Occurrence (Rocky Group; Chrome Lake; Benbow)
Lost Mountain
M16 Drill Hole
Mouat Iron-Titanium Group
Mouat Ni-Cu South Occurrence (South Mouat Area)
Mouat Ni-Cu Verdegris Creek Prospect (Mountain View; Mouat-Sampson; Stillwater Copper-Nickel)
Mouat-Sampson Mine (Mouat; Mountain View)
Mountain View
Nye Basin Alice Cr-Pt Occurrence (Middle Basin)
Nye Basin Big Seven Occurrence
Nye Basin Cr-Pt Occurrence
Nye Basin Lip Occurrence (Lower Basin)
Nye Basin Ni-Cu East Occurrence
Nye Basin Ni-Cu Lip Occurrence
Nye Basin; Alice Prospect
Nye-Chrome Lake Ni-Cu Prospect (Nye Basin; Stillwater East; Benbow)
Pyramid Mountain Group
Stillwater Complex Chromite Deposit (Benbow Mine; Gish Mine; Mouat Mine)
West Fork Adit

Latitude: 45°22'10"N
Longitude: 109°50'54"W
Decimal Degree (lat, lon): 45.369444444444,-109.84833333333

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.

Auricupride	Beryl	Chalcopyrite	Clay	Clinozoisite	Corundum	Covellite	Cubanite	Epidote	Garnet
Marcasite	Melonite	Mica	Millerite	Nickeline	None	Olivine	Pentlandite	Perovskite	Pyrite
Pyroxene	Rutile	Sphalerite	Spinel	Talc	Tetrahedrite	Titanite	Wurtzite	Zircon

Almandine ()*	Bornite ()*	Braggite ()*	Chalcopyrite ()*	Chromite ()*
Cooperite ()*	Cordierite ()*	Covellite ()*	Cubanite ()*	Enstatite ()*
Epidote ()*	Forsterite ()*	Grossular ()*	Heazlewoodite ()*	Hematite ()*
Hercynite ()*	Ilmenite ()*	Isoferroplatinum ()*	Kotulskite ()*	Laurite ()*
Magnetite ()*	Marcasite ()*	Millerite ()*	Moncheite ()*	Muscovite ()*
Nickeline ()*	Palladoarsenide ()*	Pentlandite ()*	Phlogopite ()*	Pigeonite ()*
Pyrite ()*	Pyrrhotite ()*	Rutile ()*	Sperrylite ()*	Sphalerite ()*
Talc ()*	Tetrahedrite-(Zn) ()*	Titanite ()*	Violarite ()*	Vysotskite ()*
Zircon ()*

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 As Bi Ca Cr Cu Fe H K Mg Ni O Pd Pt Ru S Sb Si Te Ti Zn Zr

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Auricupride Beryl Chalcopyrite Clay Clinozoisite Corundum Covellite Cubanite Epidote Garnet
Marcasite Melonite Mica Millerite Nickeline None Olivine Pentlandite Perovskite Pyrite
Pyroxene Rutile Sphalerite Spinel Talc Tetrahedrite Titanite Wurtzite Zircon

41 IMA Minerals at location:

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
Almandine ()*	Garnet	Fe²⁺₃Al₂(SiO₄)₃	2661.1	1667.7	2	234104,234107	2353
Bornite ()*	None	Cu₅FeS₄			1	234109	5516
Braggite ()*	None	PdPt₃S₄			4	234102,234103,234109,234120	101
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	2661.1	1667.7	10	234101,234102,234103,234104,234106,234107,234109,234114,234115,234120	27198
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	2661.1	1667.7	7	234104,234107,234108,234110,234111,234113,234119	3902
Cooperite ()*	None	PtS			2	234103,234120	124
Cordierite ()*	Beryl	Mg₂Al₄Si₅O₁₈	2661.1	1667.7	1	234107	1008
Covellite ()*	Covellite	CuS			1	234109	4165
Cubanite ()*	Cubanite Wurtzite	CuFe₂S₃			2	234103,234109	802
Enstatite ()*	Pyroxene	Mg₂Si₂O₆	2661.1	1667.7	3	234104,234107,234119	944
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	2661.1	1667.7	1	234107	8173
Forsterite ()*	Olivine	Mg₂(SiO₄)			1	234104	1188
Grossular ()*	Garnet	Ca₃Al₂(SiO₄)₃			1	234104	1544
Heazlewoodite ()*	None	Ni₃S₂			1	234103	205
Hematite ()*	Corundum	Fe₂O₃			1	234103	14640
Hercynite ()*	Spinel	Fe²⁺Al₂O₄			1	234119	407
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	2661.1	1667.7	4	234104,234107,234109,234120	5433
Isoferroplatinum ()*	Auricupride Perovskite	Pt₃Fe	2661.1	1667.7	1	234107	128
Kotulskite ()*	Nickeline	Pd(Te,Bi)_2-x (x ≈ 0.4)			1	234120	116
Laurite ()*	Pyrite	RuS₂	2661.1	1667.7	1	234107	226
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	2661.1	1667.7	7	234101,234103,234104,234106,234107,234109,234115	14899
Marcasite ()*	Marcasite	FeS₂			2	234102,234103	5674
Millerite ()*	Millerite	NiS			2	234103,234109	1066
Moncheite ()*	Melonite	Pt(Te,Bi)₂			4	234102,234103,234109,234120	133
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	2661.1	1667.7	1	234107	17380
Nickeline ()*	Nickeline	NiAs			1	234103	633
Palladoarsenide ()*	None	Pd₂As			1	234102	37
Pentlandite ()*	Pentlandite	(Ni,Fe)₉S₈	2661.1	1667.7	11	234101,234102,234103,234104,234106,234107,234109,234114,234115,234119,234120	1512
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂			1	234104	2273
Pigeonite ()*	Pyroxene	(Mg,Fe,Ca)₂Si₂O₆	2661.1	1667.7	1	234107	303
Pyrite ()*	Pyrite	FeS₂			4	234102,234103,234109,234120	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	2661.1	1667.7	11	234101,234102,234103,234104,234106,234107,234109,234114,234115,234119,234120	9056
Rutile ()*	Rutile	TiO₂			1	234104	5614
Sperrylite ()*	Pyrite	PtAs₂			3	234102,234103,234120	337
Sphalerite ()*	Sphalerite	ZnS			2	234103,234120	21482
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂			1	234104	3337
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃			1	234103	5317
Titanite ()*	Titanite	CaTi(SiO₄)O			1	234103	4899
Violarite ()*	Spinel	FeNi₂S₄			1	234103	380
Vysotskite ()*	None	PdS			4	234102,234103,234109,234120	53
Zircon ()*	Zircon	Zr(SiO₄)	2661.1	1667.7	1	234107	5251

3 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Sample Source	Dated Mineral	MinDat Locality ID	Dated Locality (Max Age)	Reference	Reference ID
USGS-U-Th-Pb-00319_206_238	1667.7	1667.7	1667.7	206_238	zircon	Zircon	163486	Mouat Ni-Cu Verdegris Creek Prospect (Mountain View; Mouat-Sampson; Stillwater Copper-Nickel), Stillwater Complex, Stillwater Co., Montana, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00319_207_206	2661.1	2661.1	2661.1	207_206	zircon	Zircon	163486	Mouat Ni-Cu Verdegris Creek Prospect (Mountain View; Mouat-Sampson; Stillwater Copper-Nickel), Stillwater Complex, Stillwater Co., Montana, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00319_207_235	2156.6	2156.6	2156.6	207_235	zircon	Zircon	163486	Mouat Ni-Cu Verdegris Creek Prospect (Mountain View; Mouat-Sampson; Stillwater Copper-Nickel), Stillwater Complex, Stillwater Co., Montana, USA	USGS-U-Th-Pb	USGS-U-Th-Pb

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...