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:
Bear Lodge Mining District, Crook Co., Wyoming, USA

Oldest recorded age at locality: 50.5
Youngest recorded age at locality: 38

mindat Locality ID: 7172
mindat URL: http://www.mindat.org/loc-7172.html

Tectonic Settings:

Total number of sublocalities beneath "Bear Lodge Mining District, Crook Co., Wyoming, USA": 16
Total number of bottom-level sublocalities: 16

Number of Child Localities: 16
Child Localities:
Bear Lodge Mountains Occurrence
Bull Hill Prospect (Black Rock Manganese Property)
Hutchinson Prospect
Inum 1 Claim
Lytle 3 Claim
Lytle 5 Claim
Oldman Mining Company Prop Occurrence
Petersen Deposit
Potluck 1 & 2 Occurrence
Redwater Claims
Royal Purple Nos. 1 & 2 Claims
Sunrise Lode Prospect
Unidentified Gold Occurrence (MRDS - 10080787)
Unknown Fluorine-Fluorite Occurrence (MRDS - 10208477)
Unknown Fluorine-Fluorite Prospect (MRDS - 10157181)
Vore Buffalo Jump Sinkhole

Latitude: 44°29'21"N
Longitude: 104°24'21"W
Decimal Degree (lat, lon): 44.489166666667,-104.40583333333

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.

Alunite	Apatite	Baryte	Burbankite	Calcite	Carbocernaite	Copper	Corundum	Fluorite	Gypsum
None	Pyrite	Quartz	Rhabdophane	Rutile	Tivanite	Zircon

Baryte ()*	Brockite ()*	Burbankite ()*	Calcite ()*	Carbocernaite ()*
Cerianite-(Ce) ()*	Fluorapatite ()*	Fluorite ()*	Gold ()*	Gypsum ()*
Hematite ()*	Jarosite ()*	Pseudorutile ()*	Pyrite ()*	Pyrolusite ()*
Quartz ()*	Rutile ()*	Siderite ()*	Thorite ()*

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: Au Ba C Ca Ce F Fe H K La Mn Na O P S Si Sr Th Ti

Elements from minerals reported directly at this locality: Ba C Ca Ce F Fe H K La Na O P S Si Sr Th Ti

Structural Groups for minerals in this locality:
Alunite Apatite Baryte Burbankite Calcite Carbocernaite Copper Corundum Fluorite Gypsum
None Pyrite Quartz Rhabdophane Rutile Tivanite Zircon

19 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
Baryte ()*	Baryte	Ba(SO₄)	50.5	38	0		11547
Brockite ()*	Rhabdophane	(Ca,Th,Ce)(PO₄)·H₂O	50.5	38	0		48
Burbankite ()*	Burbankite	(Na,Ca)₃(Sr,Ba,Ce)₃(CO₃)₅	50.5	38	0		52
Calcite ()*	Calcite	Ca(CO₃)	50.5	38	0		27770
Carbocernaite ()*	Carbocernaite	(Sr,Ce,La)(Ca,Na)(CO₃)₂	50.5	38	0		24
Cerianite-(Ce) ()*	Fluorite	CeO₂	50.5	38	0		94
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F	50.5	38	0		2740
Fluorite ()*	Fluorite	CaF₂			1	291234	9617
Gold ()*	Copper	Au			1	291239	30554
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O			1	291242	6890
Hematite ()*	Corundum	Fe₂O₃	50.5	38	0		14640
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆	50.5	38	0		2228
Pseudorutile ()*	Tivanite	Fe³⁺₂Ti⁴⁺₃O₉	50.5	38	0		30
Pyrite ()*	Pyrite	FeS₂			1	291239	39462
Pyrolusite ()*	Rutile	MnO₂			1	291239	3106
Quartz ()*	Quartz	SiO₂			1	291239	61156
Rutile ()*	Rutile	TiO₂	50.5	38	0		5614
Siderite ()*	Calcite	Fe(CO₃)	50.5	38	0		6417
Thorite ()*	Zircon	Th(SiO₄)	50.5	38	0		1006

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Jen_0000651	MAGMATIC STYLE: Dykes. ASSOCIATED SILICATE ROCKS: Phonolite, trachyte, syenite, nepheline syenite, latite, pseudoleucite porphyry, lamprophyre.
Jen_0000652	MAGMATIC STYLE: Dykes. ASSOCIATED SILICATE ROCKS: Phonolite, trachyte, syenite, nepheline syenite, latite, pseudoleucite porphyry, lamprophyre.

5 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Sample Source	Sample Num	Dated Mineral	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID
Jen_0000651	44.5	44.5	44.5	K-Ar	sanidine		Sanidine	171571	Bear Lodge Mountains Occurrence, Bear Lodge Mining District, Crook Co., Wyoming, USA	Bear Lodge Mountains	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796
Jen_0000652	50.5	38.5	50.5-38.5	K-Ar	sanidine		Sanidine	171571	Bear Lodge Mountains Occurrence, Bear Lodge Mining District, Crook Co., Wyoming, USA	Bear Lodge Mountains	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796
NAVDAT-11140	50	38	44±6			11140		171571	Bear Lodge Mountains Occurrence, Bear Lodge Mining District, Crook Co., Wyoming, USA		NAVDAT		NAVDAT
ree-00653	50.5	38.3	38.3 to 50.5 Ma (K-Ar, san,)	K-Ar	sanidine		Sanidine	171571	Bear Lodge Mountains Occurrence, Bear Lodge Mining District, Crook Co., Wyoming, USA	Bear Lodge Mountains (southern)	Orris and Grauch (2002)		USGSOFR02_189
NAVDAT-11095	50	38	44±6			11095		173275	Potluck 1 & 2 Occurrence, Bear Lodge Mining District, Crook Co., Wyoming, USA		NAVDAT		NAVDAT

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...