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:
Halloran Springs District, San Bernardino Co., California, USA

Oldest recorded age at locality: 97
Youngest recorded age at locality: 3.627

mindat Locality ID: 217146
mindat URL: http://www.mindat.org/loc-217146.html

Tectonic Settings:

Total number of sublocalities beneath "Halloran Springs District, San Bernardino Co., California, USA": 85
Total number of bottom-level sublocalities: 81

Number of Child Localities: 4
Child Localities:
Halloran Springs
Solomons Knob
Turquoise Mountain
Yucca Grove (Pass Alto; Halloran Summit)

Latitude: 35°24'34"N
Longitude: 115°52'19"W
Decimal Degree (lat, lon): 35.409444444444,-115.87194444444

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	Andalusite	Baryte	Beryl	Calcite	Clay	Clinozoisite	Copper	Corundum	Epidote
Feldspar	Malachite	Mica	None	Not in a structural group	Quartz	Rocksalt	Sulphur	Talc	Turquoise

Alunite ()*	Azurite ()*	Baryte ()*	Beryl ()*	Calcite ()*
Chlorargyrite ()*	Dolomite ()*	Epidote ()*	Gold ()*	Hematite ()*
Jarosite ()*	Libethenite ()*	Magnesite ()*	Malachite ()*	Microcline ()*
Muscovite ()*	Quartz ()*	Siderite ()*	Sulphur ()*	Talc ()*
Turquoise ()*

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 Au Ba Be C Ca Cl Cu Fe H K Mg O P S Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Alunite Andalusite Baryte Beryl Calcite Clay Clinozoisite Copper Corundum Epidote
Feldspar Malachite Mica None Not in a structural group Quartz Rocksalt Sulphur Talc Turquoise

21 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Alunite ()*	None	KAl₃(SO₄)₂(OH)₆	1	171752	966
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	1	171704	5509
Baryte ()*	Baryte	Ba(SO₄)	2	171720,171776	11547
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	1	171749	4286
Calcite ()*	Calcite	Ca(CO₃)	1	171773	27770
Chlorargyrite ()*	Rocksalt	AgCl	1	171704	1382
Dolomite ()*	None	CaMg(CO₃)₂	1	171729	9895
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	1	171770	8173
Gold ()*	Copper	Au	6	171697,171722,171765,171770,171771,171778	30554
Hematite ()*	Corundum	Fe₂O₃	1	171722	14640
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆	1	171752	2228
Libethenite ()*	Andalusite	Cu₂(PO₄)(OH)	1	171732	234
Magnesite ()*	Calcite	Mg(CO₃)	1	171729	1487
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	1	171704	12537
Microcline ()*	Feldspar	K(AlSi₃O₈)	1	171749	4924
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	1	171749	17380
Quartz ()*	Quartz	SiO₂	3	171749,171770,171773	61156
Siderite ()*	Calcite	Fe(CO₃)	1	171773	6417
Sulphur ()*	Sulphur	S	1	171773	2045
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	7	171725,171727,171728,171761,171763,171767,171779	3337
Turquoise ()*	Turquoise	CuAl₆(PO₄)₄(OH)₈·4H₂O	5	171726,171749,171752,171754,171774	484

2 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
	USGS-Rb-Sr-06126	97	97	97	Rb-Sr			whole rock							90677	Unnamed Au Prospect [70], Halloran Springs, Halloran Springs District, San Bernardino Co., California, USA		USGS-Rb-Sr		USGS-Rb-Sr
	NAVDAT-57603	4.433	3.627	4.03±0.403					57603						88337	Contact Claim, Yucca Grove (Pass Alto; Halloran Summit), Halloran Springs District, San Bernardino Co., California, USA		NAVDAT		NAVDAT

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...