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:
Little Harquahala District, Little Harquahala Mts, La Paz Co., Arizona, USA

Oldest recorded age at locality: 68.2
Youngest recorded age at locality: 46.5

mindat Locality ID: 34178
mindat URL: http://www.mindat.org/loc-34178.html

Tectonic Settings:

Total number of sublocalities beneath "Little Harquahala District, Little Harquahala Mts, La Paz Co., Arizona, USA": 18
Total number of bottom-level sublocalities: 14

Number of Child Localities: 5
Child Localities:
Bashor Group
Bauer-Kelly Prospect (Hope Prospect)
Salome
Salome Area
Unnamed Silica Deposit

Latitude: 33°43'41"N
Longitude: 113°37'25"W
Decimal Degree (lat, lon): 33.728055555556,-113.62361111111

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.

Allophane	Baryte	Brochantite	Calcite	Chalcopyrite	Clay	Copper	Corundum	Gismondine	Gypsum
Malachite	Mica	None	Plancheite	Pyrite	Quartz	Rocksalt	Scheelite	Sepiolite	Spinel

Baryte ()*	Brochantite ()*	Calcite ()*	Chalcopyrite ()*	Chrysocolla ()*
Dioptase ()*	Dolomite ()*	Galena ()*	Gismondine ()*	Gold ()*
Gypsum ()*	Hematite ()*	Magnetite ()*	Malachite ()*	Muscovite ()*
Plancheite ()*	Pseudomalachite ()*	Pyrite ()*	Quartz ()*	Scheelite ()*
Sepiolite ()*

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 Au Ba C Ca Cu Fe H K Mg O P Pb S Si W

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Allophane Baryte Brochantite Calcite Chalcopyrite Clay Copper Corundum Gismondine Gypsum
Malachite Mica None Plancheite Pyrite Quartz Rocksalt Scheelite Sepiolite Spinel

21 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)	68.2	46.5	2	140428,140429	11547
Brochantite ()*	Brochantite	Cu₄(SO₄)(OH)₆	68.2	46.5	1	140425	1633
Calcite ()*	Calcite	Ca(CO₃)	68.2	46.5	2	140433,140434	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	68.2	46.5	1	140435	27198
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	68.2	46.5	2	140434,140438	3531
Dioptase ()*	None	CuSiO₃·H₂O	68.2	46.5	2	140434,140438	164
Dolomite ()*	None	CaMg(CO₃)₂	68.2	46.5	1	140434	9895
Galena ()*	Rocksalt	PbS	68.2	46.5	3	140432,140434,140435	24243
Gismondine ()*	Gismondine	Ca₂(Si₄Al₄)O₁₆·8H₂O	68.2	63.8	1	140438	128
Gold ()*	Copper	Au	68.2	46.5	1	140434	30554
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	68.2	46.5	2	140433,140434	6890
Hematite ()*	Corundum	Fe₂O₃	68.2	46.5	1	140434	14640
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	68.2	46.5	1	140434	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	68.2	46.5	1	140434	12537
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	66.1	63.1	1	140434	17380
Plancheite ()*	Plancheite	Cu₈(Si₄O₁₁)₂(OH)₄·H₂O	68.2	46.5	1	140434	74
Pseudomalachite ()*	None	Cu₅(PO₄)₂(OH)₄	68.2	46.5	1	140434	369
Pyrite ()*	Pyrite	FeS₂	68.2	46.5	3	140433,140434,140435	39462
Quartz ()*	Quartz	SiO₂	68.2	46.5	2	140434,140439	61156
Scheelite ()*	Scheelite	Ca(WO₄)	68.2	46.5	1	140430	4894
Sepiolite ()*	Sepiolite Clay	Mg₄Si₆O₁₅(OH)₂·6H₂O	68.2	63.8	1	140438	241

3 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Num	Age from other Locality	Minerals explicitely stated as having this age	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID
Giersdorf_00000359	68.2	63.8	66±2.2	K-Ar	Age of cooling after metamorphic event or reset by intrusion of granodiorite of the Granite Wash Pass	L.Ha-1	Yes		192365	Little Harquahala Mts, La Paz Co., Arizona, USA	Little Harquahala Mts.	Shafiqullah et al. (1980)	AGSD12_201
Giersdorf_00000361	66.1	63.1	64.6±1.5	K-Ar		Hvr-1		Muscovite	34177	Salome, Little Harquahala District, Little Harquahala Mts, La Paz Co., Arizona, USA	Salome	Shafiqullah et al. (1980)	AGSD12_201
Giersdorf_00000376	48.5	46.5	47.5±1.0	K-Ar	Age of cooling after metamorphic-plutonic event or resetting by Tertiary thermal event	UAKA-73-126			34177	Salome, Little Harquahala District, Little Harquahala Mts, La Paz Co., Arizona, USA	Salome	Shafiqullah et al. (1980)	AGSD12_201

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...