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:
Eagle Tail District, Eagletail Mts (Cemetary Ridge), La Paz Co., Arizona, USA

Oldest recorded age at locality: 53.9
Youngest recorded age at locality: 19.4

mindat Locality ID: 33439
mindat URL: http://www.mindat.org/loc-33439.html

Tectonic Settings:

Total number of sublocalities beneath "Eagle Tail District, Eagletail Mts (Cemetary Ridge), La Paz Co., Arizona, USA": 10
Total number of bottom-level sublocalities: 10

Number of Child Localities: 10
Child Localities:
Actinolite Prospects (Actinolite Asbestos Prospect)
Adams Prospect
Black Buck & Buckhorn Mine
Black Hawk Mine
Collins Prospect (Old Collins Prospect; Cemetary Ridge Prospects)
Deadman Tank Area
Eagle Tail Group (Golden State Mine)
Gentry Lead-Silver Mine
Livingston Claims
Red Bird Prospect

Latitude: 33°23'10"N
Longitude: 113°25'17"W
Decimal Degree (lat, lon): 33.386111111111,-113.42138888889

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	Amphibole	Baryte	Calcite	Chalcopyrite	Clinozoisite	Copper	Corundum	Epidote	Malachite
None	Quartz	Rutile	Scheelite	Spinel

Actinolite ()*	Baryte ()*	Calcite ()*	Chalcopyrite ()*	Chrysocolla ()*
Cuprotungstite ()*	Epidote ()*	Gold ()*	Hematite ()*	Magnetite ()*
Malachite ()*	Pyrolusite ()*	Quartz ()*	Scheelite ()*	Stolzite ()*

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 Mg Mn O Pb S Si W

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Allophane Amphibole Baryte Calcite Chalcopyrite Clinozoisite Copper Corundum Epidote Malachite
None Quartz Rutile Scheelite Spinel

15 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
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂	53.9	51.7	2	140145,140150	3419
Baryte ()*	Baryte	Ba(SO₄)	53.9	51.7	1	140151	11547
Calcite ()*	Calcite	Ca(CO₃)	53.9	51.7	1	140151	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	53.9	51.7	1	140149	27198
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	53.9	51.7	1	140149	3531
Cuprotungstite ()*	None	Cu²⁺₃(WO₄)₂(OH)₂	53.9	51.7	1	140153	67
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	53.9	51.7	1	140149	8173
Gold ()*	Copper	Au	53.9	51.7	1	140146	30554
Hematite ()*	Corundum	Fe₂O₃	53.9	51.7	1	140146	14640
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	53.9	51.7	2	140145,140149	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	53.9	51.7	1	140149	12537
Pyrolusite ()*	Rutile	MnO₂	53.9	51.7	2	140147,140148	3106
Quartz ()*	Quartz	SiO₂	53.9	51.7	2	140147,140148	61156
Scheelite ()*	Scheelite	Ca(WO₄)	53.9	51.7	1	140153	4894
Stolzite ()*	Scheelite	Pb(WO₄)	53.9	51.7	1	140153	156

4 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Sample Num	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID
Giersdorf_00000371	53.9	51.7	52.8±1.1	K-Ar	UAKA-73-125	33439	Eagle Tail District, Eagletail Mts (Cemetary Ridge), La Paz Co., Arizona, USA	Eagle Tail Mts. Quad.	Shafiqullah et al. (1980)	AGSD12_201
Giersdorf_00000396	24.4	23	23.7±0.7	K-Ar	UAKA-72-73	33439	Eagle Tail District, Eagletail Mts (Cemetary Ridge), La Paz Co., Arizona, USA	Eagle Tail Mountains	Shafiqullah et al. (1980)	AGSD12_201
Giersdorf_00000407	21.43	20.37	20.9±0.53	K-Ar	UAKA-73-107	33439	Eagle Tail District, Eagletail Mts (Cemetary Ridge), La Paz Co., Arizona, USA	Eagle Tail Mountains	Shafiqullah et al. (1980)	AGSD12_201
Giersdorf_00000417	20.56	19.4	19.98±0.58	K-Ar	UAKA-72-72	33439	Eagle Tail District, Eagletail Mts (Cemetary Ridge), La Paz Co., Arizona, USA	Eagle Tail Mountains	Shafiqullah et al. (1980)	AGSD12_201

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...