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:
Birthday Mine (Birthday Claim; Birthday Area), Mountain Pass Mine (Mountain Pass Deposit; Mountain Pass Mine And Mill; Bastnaesite Deposit; Bastnäsite Deposit; Mountain Pass Carbonatite), Mountain Pass, Mountain Pass District, Clark Mts (Clark Mountain Range), San Bernardino Co., California, USA

Oldest recorded age at locality: 1563
Youngest recorded age at locality: 1330

mindat Locality ID: 4396
mindat URL: http://www.mindat.org/loc-4396.html

Tectonic Settings:

Total number of sublocalities beneath "Birthday Mine (Birthday Claim; Birthday Area), Mountain Pass Mine (Mountain Pass Deposit; Mountain Pass Mine And Mill; Bastnaesite Deposit; Bastnäsite Deposit; Mountain Pass Carbonatite), Mountain Pass, Mountain Pass District, Clark Mts (Clark Mountain Range), San Bernardino Co., California, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 35°29'21"N
Longitude: 115°32'12"W
Decimal Degree (lat, lon): 35.489166666667,-115.53666666667

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.

Baryte	Bastnäsite	Calcite	Feldspar	Fluorite	Mica	None	Parisite	Pyroxene

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 Ba C Ca Ce F Fe K Mg O S Si Sr

Elements from minerals reported directly at this locality: Al Ba C Ca Ce F Fe K Mg O S Si Sr

Structural Groups for minerals in this locality:
Baryte Bastnäsite Calcite Feldspar Fluorite Mica None Parisite Pyroxene

10 IMA Minerals at location:

Ankerite ()*	Baryte ()*	Bastnäsite-(Ce) ()*	Calcite ()*	Celestine ()*
Cerianite-(Ce) ()*	Diopside ()*	Fluorophlogopite ()*	Microcline ()*	Parisite-(Ce) ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	1563	1330	3092
Baryte ()*	Baryte	Ba(SO₄)	1563	1330	11547
Bastnäsite-(Ce) ()*	Bastnäsite	Ce(CO₃)F	1563	1330	304
Calcite ()*	Calcite	Ca(CO₃)	1563	1330	27770
Celestine ()*	Baryte	Sr(SO₄)	1563	1330	1252
Cerianite-(Ce) ()*	Fluorite	CeO₂	1563	1330	94
Diopside ()*	Pyroxene	CaMgSi₂O₆	1563	1330	4135
Fluorophlogopite ()*	Mica	KMg₃(Si₃Al)O₁₀F₂	1563	1330	47
Microcline ()*	Feldspar	K(AlSi₃O₈)	1563	1330	4924
Parisite-(Ce) ()*	Parisite	CaCe₂(CO₃)₃F₂	1563	1330	112

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Jen_0001041	MAGMATIC STYLE: Irregular sheet, dykes and veins. ASSOCIATED SILICATE ROCKS: Potassic shonkinite, syenite, granite and fenite.
Jen_0001042	MAGMATIC STYLE: Irregular sheet, dykes and veins. ASSOCIATED SILICATE ROCKS: Potassic shonkinite, syenite, granite and fenite.
Jen_0001043	MAGMATIC STYLE: Irregular sheet, dykes and veins. ASSOCIATED SILICATE ROCKS: Potassic shonkinite, syenite, granite and fenite.
Jen_0001044	MAGMATIC STYLE: Irregular sheet, dykes and veins. ASSOCIATED SILICATE ROCKS: Potassic shonkinite, syenite, granite and fenite.
Jen_0001045	MAGMATIC STYLE: Irregular sheet, dykes and veins. ASSOCIATED SILICATE ROCKS: Potassic shonkinite, syenite, granite and fenite.
Jen_0001046	MAGMATIC STYLE: Irregular sheet, dykes and veins. ASSOCIATED SILICATE ROCKS: Potassic shonkinite, syenite, granite and fenite.

6 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Sample Source	Age from other Locality	Dated Mineral	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID
Jen_0001041	1415	1415	1415			Yes		272976	Mountain Pass, Mountain Pass District, Clark Mts (Clark Mountain Range), San Bernardino Co., California, USA	Mountain Pass	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796
Jen_0001042	1475	1405	1440±35	K-Ar		Yes		272976	Mountain Pass, Mountain Pass District, Clark Mts (Clark Mountain Range), San Bernardino Co., California, USA	Mountain Pass	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796
Jen_0001043	1420	1350	1385±35	K-Ar		Yes		272976	Mountain Pass, Mountain Pass District, Clark Mts (Clark Mountain Range), San Bernardino Co., California, USA	Mountain Pass	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796
Jen_0001044	1430	1330	1380±50	Rb-Sr		Yes		272976	Mountain Pass, Mountain Pass District, Clark Mts (Clark Mountain Range), San Bernardino Co., California, USA	Mountain Pass	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796
Jen_0001045	1530	1370	1450±80	Rb-Sr		Yes		272976	Mountain Pass, Mountain Pass District, Clark Mts (Clark Mountain Range), San Bernardino Co., California, USA	Mountain Pass	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796
Jen_0001046	1563	1483	1523±40	U-Pb	galena	Yes	Galena	272976	Mountain Pass, Mountain Pass District, Clark Mts (Clark Mountain Range), San Bernardino Co., California, USA	Mountain Pass	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...