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:
U.S. Borax Open Pit (Boron Pit), U.S. Borax Mine (Pacific West Coast Borax; Kramer Mine; Baker Mine), Kramer Borate Deposit, Boron, Kramer District (Kramer Borate District), Kern Co., California, USA

Oldest recorded age at locality: 19
Youngest recorded age at locality: 19

mindat Locality ID: 3484
mindat URL: http://www.mindat.org/loc-3484.html

Tectonic Settings:

Total number of sublocalities beneath "U.S. Borax Open Pit (Boron Pit), U.S. Borax Mine (Pacific West Coast Borax; Kramer Mine; Baker Mine), Kramer Borate Deposit, Boron, Kramer District (Kramer Borate District), Kern Co., California, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 35°2'39"N
Longitude: 117°41'39"W
Decimal Degree (lat, lon): 35.044166666667,-117.69416666667

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.

Analcime	Calcite	Chabazite	Clay	Gmelinite	Harmotome	Heulandite	Mordenite	Nickeline	None
Orpiment	Smectite-vermiculite	Spinel

Analcime ()*	Borax ()*	Calcite ()*	Chabazite-Na ()*	Clinoptilolite-Na ()*
Colemanite ()*	Gmelinite-Na ()*	Greigite ()*	Heulandite-Na ()*	Hydroboracite ()*
Inderite ()*	Inyoite ()*	Kernite ()*	Kurnakovite ()*	Mazzite-Na ()*
Meyerhofferite ()*	Mordenite ()*	Orpiment ()*	Phillipsite-Na ()*	Probertite ()*
Pyrrhotite ()*	Realgar ()*	Rhodochrosite ()*	Saponite ()*	Searlesite ()*
Tincalconite ()*	Tunellite ()*	Ulexite ()*

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 B C Ca Fe H K Mg Mn Na O S Si Sr

Elements from minerals reported directly at this locality: Al As B C Ca Fe H K Mg Mn Na O S Si Sr

Structural Groups for minerals in this locality:
Analcime Calcite Chabazite Clay Gmelinite Harmotome Heulandite Mordenite Nickeline None
Orpiment Smectite-vermiculite Spinel

28 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Analcime ()*	Analcime	Na(AlSi₂O₆)·H₂O	19	19	1627
Borax ()*	None	Na₂B₄O₅(OH)₄·8H₂O	19	19	76
Calcite ()*	Calcite	Ca(CO₃)	19	19	27770
Chabazite-Na ()*	Chabazite	(Na₃K)[Al₄Si₈O₂₄]·11H₂O	19	19	66
Clinoptilolite-Na ()*	Heulandite	Na₆(Si₃₀Al₆)O₇₂·20H₂O	19	19	24
Colemanite ()*	None	CaB₃O₄(OH)₃·H₂O	19	19	144
Gmelinite-Na ()*	Gmelinite	Na₄(Si₈Al₄)O₂₄·11H₂O	19	19	25
Greigite ()*	Spinel	Fe²⁺Fe³⁺₂S₄	19	19	62
Heulandite-Na ()*	Heulandite	(Na,Ca,K)₆(Si,Al)₃₆O₇₂·22H₂O	19	19	18
Hydroboracite ()*	None	CaMg[B₃O₄(OH)₃]₂·3H₂O	19	19	42
Inderite ()*	None	MgB₃O₃(OH)₅·5H₂O	19	19	13
Inyoite ()*	None	CaB₃O₃(OH)₅·4H₂O	19	19	34
Kernite ()*	None	Na₂B₄O₆(OH)₂·3H₂O	19	19	10
Kurnakovite ()*	None	MgB₃O₃(OH)₅·5H₂O	19	19	15
Mazzite-Na ()*	None	Na₈(Si₂₈Al₈)O₇₂·30H₂O	19	19	2
Meyerhofferite ()*	None	CaB₃O₃(OH)₅·H₂O	19	19	23
Mordenite ()*	Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆·28H₂O	19	19	405
Orpiment ()*	Orpiment	As₂S₃	19	19	511
Phillipsite-Na ()*	Harmotome	Na₆(Si₁₀Al₆)O₃₂·12H₂O	19	19	27
Probertite ()*	None	NaCaB₅O₇(OH)₄·3H₂O	19	19	29
Pyrrhotite ()*	Nickeline	Fe₇S₈	19	19	9056
Realgar ()*	None	AsS	19	19	712
Rhodochrosite ()*	Calcite	Mn(CO₃)	19	19	1711
Saponite ()*	Clay Smectite-vermiculite	(Ca,Na)_0.3(Mg,Fe)₃(Si,Al)₄O₁₀(OH)₂·4H₂O	19	19	301
Searlesite ()*	None	NaBSi₂O₅(OH)₂	19	19	34
Tincalconite ()*	None	Na₂B₄O₅(OH)₄·3H₂O	19	19	29
Tunellite ()*	None	SrB₆O₉(OH)₂·3H₂O	19	19	12
Ulexite ()*	None	NaCaB₅O₆(OH)₆·5H₂O	19	19	160

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
	Scott-OLEB41_307-0001	19	19	19		Age of deposition					Yes				80184	Kramer Borate Deposit, Boron, Kramer District (Kramer Borate District), Kern Co., California, USA	Kramer Deposit	Grew et al. (2011)	10.1007/s11084-010-9233-y	OLEB41_307	the oldest reported kernite is 19 Ma in the Kramer

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...