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:
Gem Co., Idaho, USA

Oldest recorded age at locality: 12
Youngest recorded age at locality: 11.2

mindat Locality ID: 39562
mindat URL: http://www.mindat.org/loc-39562.html

Tectonic Settings:

Total number of sublocalities beneath "Gem Co., Idaho, USA": 70
Total number of bottom-level sublocalities: 62

Number of Child Localities: 16
Child Localities:
B-Mine (Pine Creek Claim)
Banks Area
Cascade Area
Donald M Claim
Emmett
Emmett Area
Johnson Creek Occurrence
Lucky Gem
Ola
Ola Area
Squaw Creek District
Unnamed Diatomite Location (MRDS - 10143854)
Unnamed Pumice Location (MRDS - 10120192)
Unnamed Pumice Location (MRDS - 10144256)
Unnamed Pumice Location (MRDS - 10266056)
Westview District

Latitude: 44°2'23"N
Longitude: 116°19'48"W
Decimal Degree (lat, lon): 44.039722222222,-116.33

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.

Acanthite	Amorphous	Arsenic	Arsenopyrite	Beryl	Calcite	Chalcopyrite	Clay	Copper	Corundum
Feldspar	Mica	None	Owyheeite	Pyrite	Quartz	Rocksalt	Sphalerite	Spinel	Stibnite
Tetrahedrite	Tourmaline

Acanthite ()*	Arsenic ()*	Arsenopyrite ()*	Beryl ()*	Boulangerite ()*
Calcite ()*	Chalcopyrite ()*	Dolomite ()*	Galena ()*	Gold ()*
Ilmenite ()*	Magnetite ()*	Microcline ()*	Muscovite ()*	Opal ()*
Owyheeite ()*	Platinum ()*	Pyrargyrite ()*	Pyrite ()*	Quartz ()*
Schorl ()*	Scorodite ()*	Sphalerite ()*	Stibnite ()*	Tetrahedrite-(Zn) ()*

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 Al As Au B Be C Ca Cu Fe H K Mg Na O Pb Pt S Sb Si Ti Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Acanthite Amorphous Arsenic Arsenopyrite Beryl Calcite Chalcopyrite Clay Copper Corundum
Feldspar Mica None Owyheeite Pyrite Quartz Rocksalt Sphalerite Spinel Stibnite
Tetrahedrite Tourmaline

25 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
Acanthite ()*	Acanthite	Ag₂S			2	207964,207977	2793
Arsenic ()*	Arsenic	As			1	207997	379
Arsenopyrite ()*	Arsenopyrite	FeAsS			2	207963,207970	9052
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈			3	207952,207953,207955	4286
Boulangerite ()*	None	Pb₅Sb₄S₁₁			2	207963,207987	843
Calcite ()*	Calcite	Ca(CO₃)	12	11.2	11	207967,207970,207978,207980,207982,207984,207986,207987,207988,207990,207998	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂			5	207963,207964,207970,207998,208000	27198
Dolomite ()*	None	CaMg(CO₃)₂			6	207963,207967,207970,207980,207990,207998	9895
Galena ()*	Rocksalt	PbS	12	11.2	25	207963,207964,207965,207966,207967,207968,207970,207972,207973,207976,207977,207978,207980,207982,207983,207984,207985,207986,207987,207988,207990,207996,207997,207998,208000	24243
Gold ()*	Copper	Au			2	207963,207991	30554
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃			1	207991	5433
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄			1	207991	14899
Microcline ()*	Feldspar	K(AlSi₃O₈)			2	207952,207953	4924
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂			3	207952,207953,207955	17380
Opal ()*	Amorphous	SiO₂·nH₂O			2	207936,207939	2994
Owyheeite ()*	Owyheeite	Ag₃Pb₁₀Sb₁₁S₂₈			2	207965,207987	89
Platinum ()*	Copper	Pt			1	207991	485
Pyrargyrite ()*	None	Ag₃SbS₃			3	207964,207965,207987	1425
Pyrite ()*	Pyrite	FeS₂	12	11.2	28	207963,207964,207965,207966,207967,207968,207970,207973,207975,207976,207977,207978,207979,207980,207981,207982,207983,207984,207986,207987,207988,207994,207996,207997,207998,207999,208000,208001	39462
Quartz ()*	Quartz	SiO₂	12	11.2	28	207952,207953,207955,207963,207965,207966,207967,207968,207970,207975,207976,207977,207978,207980,207982,207983,207984,207986,207987,207988,207990,207994,207996,207997,207998,207999,208000,208001	61156
Schorl ()*	Tourmaline	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)			2	207952,207953	2705
Scorodite ()*	None	Fe³⁺(AsO₄)·2H₂O			1	207987	1153
Sphalerite ()*	Sphalerite	ZnS	12	11.2	31	207963,207964,207965,207966,207967,207968,207970,207972,207973,207975,207976,207977,207978,207979,207980,207981,207982,207983,207985,207986,207987,207988,207990,207993,207994,207996,207997,207998,207999,208000,208001	21482
Stibnite ()*	Stibnite	Sb₂S₃			2	207963,207987	3418
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃			3	207963,207964,207977	5317

1 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
	NAVDAT-33798	12	11.2	11.6±0.4					33798						45525	Friday Mine, Westview District, Gem Co., Idaho, USA		NAVDAT		NAVDAT

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...