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:
Almadén, Almadén District, Ciudad Real, Castile-La Mancha, Spain

Oldest recorded age at locality: 429.7
Youngest recorded age at locality: 358.2

mindat Locality ID: 133592
mindat URL: http://www.mindat.org/loc-133592.html

Tectonic Settings:

Total number of sublocalities beneath "Almadén, Almadén District, Ciudad Real, Castile-La Mancha, Spain": 7
Total number of bottom-level sublocalities: 7

Number of Child Localities: 7
Child Localities:
Almadén Mine
Corchuelo
El Burcio Mine
Guadalperal Prospect
La Pila Prospect
Las Cuevas Mine
Pozo De San Teodoro

Latitude: 38°46'28"N
Longitude: 4°47'36"W
Decimal Degree (lat, lon): 38.774444444444,-4.7933333333333

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	Baryte	Calcite	Chalcopyrite	Clay	Corrensite	Corundum	Diaspore	Feldspar	Gypsum
Kaolinite	Marcasite	Mica	Millerite	Nickeline	None	Pyrite	Pyrophyllite	Quartz	Rocksalt
Sphalerite	Titanite	Wurtzite	Zircon

Albite ()*	Ankerite ()*	Baryte ()*	Calcite ()*	Calomel ()*
Chalcopyrite ()*	Cinnabar ()*	Dickite ()*	Dolomite ()*	Galena ()*
Gianellaite ()*	Goethite ()*	Graphite ()*	Greenockite ()*	Gypsum ()*
Ilmenite ()*	Jarosite ()*	Kaolinite ()*	Magnesite ()*	Marcasite ()*
Mercury ()*	Metacinnabar ()*	Millerite ()*	Muscovite ()*	Pyrite ()*
Pyrophyllite ()*	Pyrrhotite ()*	Quartz ()*	Rectorite ()*	Schuetteite ()*
Siderite ()*	Sphalerite ()*	Titanite ()*	Zircon ()*

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 Cd Cl Cu Fe H Hg K Mg N Na Ni O Pb S Si Ti Zn Zr

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Alunite Baryte Calcite Chalcopyrite Clay Corrensite Corundum Diaspore Feldspar Gypsum
Kaolinite Marcasite Mica Millerite Nickeline None Pyrite Pyrophyllite Quartz Rocksalt
Sphalerite Titanite Wurtzite Zircon

34 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
Albite ()*	Feldspar	Na(AlSi₃O₈)	364	362.4	1	109432	8803
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	429.7	361.3	2	109427,109432	3092
Baryte ()*	Baryte	Ba(SO₄)	429.7	358.2	3	109427,109432,109433	11547
Calcite ()*	Calcite	Ca(CO₃)	429.7	358.2	3	109427,109432,109433	27770
Calomel ()*	None	HgCl	429.7	361.3	2	109427,109433	91
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	429.7	358.2	2	109427,109433	27198
Cinnabar ()*	None	HgS	429.7	361.3	5	109427,109430,109431,109432,109433	2600
Dickite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	429.7	358.2	2	109427,109433	651
Dolomite ()*	None	CaMg(CO₃)₂	429.7	358.2	3	109427,109432,109433	9895
Galena ()*	Rocksalt	PbS	429.7	358.2	2	109427,109433	24243
Gianellaite ()*	None	(Hg₂N)₂(SO₄)(H₂O)_x	429.7	361.3	1	109427	3
Goethite ()*	Diaspore	FeO(OH)	429.7	361.3	1	109427	7437
Graphite ()*	None	C	429.7	358.2	2	109427,109433	2812
Greenockite ()*	Wurtzite	CdS	429.7	358.2	2	109427,109433	717
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	429.7	358.2	2	109427,109433	6890
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	429.7	358.2	2	109427,109433	5433
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆	429.7	358.2	1	109433	2228
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	429.7	358.2	3	109427,109432,109433	5591
Magnesite ()*	Calcite	Mg(CO₃)	364	362.4	1	109432	1487
Marcasite ()*	Marcasite	FeS₂	429.7	358.2	2	109427,109433	5674
Mercury ()*	None	Hg	429.7	361.3	3	109427,109432,109433	397
Metacinnabar ()*	Sphalerite	HgS	429.7	361.3	3	109427,109432,109433	255
Millerite ()*	Millerite	NiS	429.7	358.2	2	109427,109433	1066
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	429.7	358.2	3	109427,109432,109433	17380
Pyrite ()*	Pyrite	FeS₂	429.7	358.2	3	109427,109432,109433	39462
Pyrophyllite ()*	Clay Pyrophyllite	Al₂Si₄O₁₀(OH)₂	364	362.4	1	109432	771
Pyrrhotite ()*	Nickeline	Fe₇S₈	429.7	358.2	2	109427,109433	9056
Quartz ()*	Quartz	SiO₂	429.7	358.2	3	109427,109432,109433	61156
Rectorite ()*	Corrensite Clay	(Na,Ca)Al₄(Si,Al)₈O₂₀(OH)₄·2H₂O	364	362.4	1	109432	49
Schuetteite ()*	None	Hg₃O₂(SO₄)	0	0	3	109427,109432,109433	21
Siderite ()*	Calcite	Fe(CO₃)	429.7	361.3	2	109427,109432	6417
Sphalerite ()*	Sphalerite	ZnS	429.7	358.2	3	109427,109432,109433	21482
Titanite ()*	Titanite	CaTi(SiO₄)O	429.7	358.2	2	109427,109433	4899
Zircon ()*	Zircon	Zr(SiO₄)	429.7	361.3	1	109427	5251

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Hg-00028	Mercury mineralization at Almaden is hosted by Paleozoic sedimentary and mafic volcanic rocks that unconformably overlie Pre-Ordovician basement rock in the central part of the Iberian Peninsula

6 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Source	Sample Num	Age from other Locality	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
Hg-00028	429.7	361.3		Ar-Ar					Calomel, Cinnabar, Mercury, Metacinnabar, Schuetteite	Hg	3115	Almadén Mine, Almadén, Almadén District, Ciudad Real, Castile-La Mancha, Spain		Hall et al. (1997)	10.1016/S0012-821X(97)00041-1	EPSL148_287	Lower Silurian was onset of mineralization, continuing mineralization until Upper Devonian. W/ 2 main episodes of mineralization "one in early Silurian time and another ending in early Carboniferous time. This suggests, in turn, that mercury was deposited both by the alkali basalt volcanic rocks and by later Hercynian metamorphism or magmatism. The early event remains poorly constrained, although it probably took place shortly after deposition of the ore-hosting Lower Silurian Criadero quartzite"
Hg-00028-Las-Cuevas	364	362.4	363.2 ± .8	Ar-Ar	minimum age of illite	illite	sc87/403			Hg	133000	Las Cuevas Mine, Almadén, Almadén District, Ciudad Real, Castile-La Mancha, Spain	Las Cuevas	Hall et al. (1997)	10.1016/S0012-821X(97)00041-1	EPSL148_287	Ar retention ages are equivelent to K-Ar ages, so, represent the minimum age of illite formation
Hg-00028-El Entredicho-01	360.8	360	360.4 ± .4	Ar-Ar	minimum age of illite	illite	ee4	Yes		Hg	130643	El Entredicho Mine, Almadenejos, Almadén District, Ciudad Real, Castile-La Mancha, Spain	El Entredicho	Hall et al. (1997)	10.1016/S0012-821X(97)00041-1	EPSL148_287	Ar retention ages are equivelent to K-Ar ages, so, represent the minimum age of illite formation
Hg-00028-El Entredicho-02	359	358.2	358.6 ±.4	Ar-Ar	minimum age of illite	illite	sme32/1	Yes		Hg	130643	El Entredicho Mine, Almadenejos, Almadén District, Ciudad Real, Castile-La Mancha, Spain	El Entredicho	Hall et al. (1997)	10.1016/S0012-821X(97)00041-1	EPSL148_287	Ar retention ages are equivelent to K-Ar ages, so, represent the minimum age of illite formation
Hg-00028-El Entredicho-03	363.1	361.5	362.3 ± .8	Ar-Ar	minimum age of illite	illite	sme32/2 < I um	Yes		Hg	130643	El Entredicho Mine, Almadenejos, Almadén District, Ciudad Real, Castile-La Mancha, Spain	El Entredicho	Hall et al. (1997)	10.1016/S0012-821X(97)00041-1	EPSL148_287	Ar retention ages are equivelent to K-Ar ages, so, represent the minimum age of illite formation
Hg-00028-El Entredicho-04	361.1	359.5	360.3 ±.8	Ar-Ar	minimum age of illite	illite	sme32/2 < 0.2 um	Yes		Hg	130643	El Entredicho Mine, Almadenejos, Almadén District, Ciudad Real, Castile-La Mancha, Spain	El Entredicho	Hall et al. (1997)	10.1016/S0012-821X(97)00041-1	EPSL148_287	Ar retention ages are equivelent to K-Ar ages, so, represent the minimum age of illite formation

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...