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Ambas Aguas (Ambasaguas; Ambas-Aguas; Ambas Aguas II; Ambasaguas 1), Muro de Aguas, La Rioja, Spaini
Regional Level Types
Ambas Aguas (Ambasaguas; Ambas-Aguas; Ambas Aguas II; Ambasaguas 1)- not defined -
Muro de Aguas- not defined -
La RiojaAutonomous Community
SpainCountry

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Key
Latitude & Longitude (WGS84):
42° 7' 11'' North , 2° 9' 59'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Préjano191 (2012)7.5km
Cornago535 (2012)8.5km
Enciso150 (2012)9.1km
Santa Eulalia Bajera130 (2012)10.2km
Herce356 (2012)10.5km
Name(s) in local language(s):
Ambas Aguas (Ambasaguas; Ambas-Aguas; Ambas Aguas II; Ambasaguas 1), Muro de Aguas, La Rioja, España


Coordinates of the owner´s house (built hiding the ancient mine).
There are several little quarries where it is possible to extract samples of pyrite after payment.
_____________________

Ambas Aguas is a small, almost completely abandoned, village. You can access it by a track (5.5 km long) from the town of Muro de Aguas. In Ambas Aguas there are several outcrops that have been known for over 100 years, which are worked for pyrite, but only for collecting and decorating purposes. They are located along the streams around the area, and occur as they cross Cretaceous sedimentary layers (Urbión Group - Berriasian to Aptian age) that are affected by mineralizing hydrothermal fluids:

-West Vallaroso stream
-East Vallaroso stream
-La Urruñada stream (also called La Orrañuda; Laorrañuda; La Orrañada; Laorruñada)
-Las Cañadillas stream in the Aguasala ravine.

Most of the area belongs, since 1996, to the mining licence "Ambas Aguas II", derived from initial licence "Ambas Aguas I" (1994), hence the name "Ambas Aguas 1". You can visit the area and collect pyrites but only after payment. The coordinates of the area are actually those of the owner's house, built over an old mine in the village.

The crystals of pyrite in the region occur in a wide variety of forms. In the Laorrañuda and Vallaroso streams, close to Ambas Aguas village, the matrix is a light gray colored shale. Here cubes are common, with deeply striated faces; there are pentagonododecaedron (pyritohedron) with both smooth and shiny faces or striated ones, and all possible combinations thereof also occur. Less common forms are octahedrons and diplohedrons, combined with pyritohedrons and cubes. Also there are some small twined pyritohedrons in the form of "iron cross", and frequent “pine cone” like groups.

In the Arroyo de Las Cañadillas, located midway between Ambas Aguas and Muro de Aguas, the matrix is gray shale, very dark in color. Here individual crystals are striated cubes, striated pyritohedral crystals with quite curved faces, and combinations thereof. Most characteristic are “pine cone” clusters, composed of many curved faces pyritohedon. Apart from their shape, specimens can be recognized by the dark shale residues often left within any holes or gaps.

Regions containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
Iberian PeninsulaPeninsula

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


5 valid minerals.

Detailed Mineral List:

'Chlorite Group'
Reference: - García, Gonzalo (2003). Piritas de Ambasaguas. Bocamina. p: 14-45. Madrid
Chloritoid ?
Formula: (Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
Reference: - García, Gonzalo (2003). Piritas de Ambasaguas. Bocamina. p: 14-45. Madrid
Cookeite
Formula: (Al2Li)Al2(AlSi3O10)(OH)8
Reference: - García, Gonzalo (2003). Piritas de Ambasaguas. Bocamina. p: 14-45. Madrid; - García, Gonzalo (2003). Piritas de Ambasaguas. Bocamina. p: 14-45. Madrid
Gypsum
Formula: CaSO4 · 2H2O
Reference: - García, Gonzalo (2003). Piritas de Ambasaguas. Bocamina. p: 14-45. Madrid; - García, Gonzalo (2003). Piritas de Ambasaguas. Bocamina. p: 14-45. Madrid
Pyrite
Formula: FeS2
Reference: Calvo, M., Sevillano, E. 1989. Famous mineral localities: Pyrite crystals from Soria and La Rioja provinces, Spain. The Mineralogical Record. 20( 6): 451-456. ; - García, Gonzalo (2003). Piritas de Ambasaguas. Bocamina. p: 14-45. Madrid
Quartz
Formula: SiO2
Reference: - García, Gonzalo (2003). Piritas de Ambasaguas. Bocamina. p: 14-45. Madrid

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Gypsum7.CD.40CaSO4 · 2H2O
Group 9 - Silicates
Chloritoid ?9.AF.85(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
Cookeite9.EC.55(Al2Li)Al2(AlSi3O10)(OH)8
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
Chloritoid ?52.3.3.1(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
Cookeite71.4.1.2(Al2Li)Al2(AlSi3O10)(OH)8
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Chlorite Group'-

List of minerals for each chemical element

HHydrogen
H GypsumCaSO4 · 2H2O
H Cookeite(Al2Li)Al2(AlSi3O10)(OH)8
H Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
LiLithium
Li Cookeite(Al2Li)Al2(AlSi3O10)(OH)8
OOxygen
O GypsumCaSO4 · 2H2O
O Cookeite(Al2Li)Al2(AlSi3O10)(OH)8
O QuartzSiO2
O Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
AlAluminium
Al Cookeite(Al2Li)Al2(AlSi3O10)(OH)8
Al Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
SiSilicon
Si Cookeite(Al2Li)Al2(AlSi3O10)(OH)8
Si QuartzSiO2
Si Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
SSulfur
S PyriteFeS2
S GypsumCaSO4 · 2H2O
CaCalcium
Ca GypsumCaSO4 · 2H2O
FeIron
Fe PyriteFeS2
Fe Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
- Alonso-Azcárate, J., Rodas, M., Mas, R., Velasco, F. 1995. Origen de las piritas de la cuenca de Cameros, (La Rioja). Geogaceta. 18: 180-183
- Calderón, S. 1910. Los minerales de España. Vol. 1. Junta para la Ampliación de Estudios e Investigaciones Científicas. 416 p. Madrid.
- Callen, J. 1981. La pirita de Logroño y Soria. Bol. Grup Min. Català. 2: 6-9.
- Calvo, M. 2003b Minas y minerales de España. 2. Sulfuros y sulfosales. Museo de Ciencias Naturales de Álava. Vitoria 2003.
- Calvo, M., Sevillano, E. 1989. Famous mineral localities: Pyrite crystals from Soria and La Rioja provinces, Spain. The Mineralogical Record. 20( 6): 451-456.
- Egger, G. 2003. Pyrit aus Spanien. Lapis Mineralien Magazin. 28( 4): 35. Ambasaguas
- García García, G., Alonso-Azcárate, J. 2003. Piritas de Ambasaguas. Bocamina. 12: 14-45.
- Guiollard, P.C. 1976. La gite de pyrite d'Ambassaguas (Espagne). Mineraux et Fossiles. 17: 41-45.
- Mollfulleda, J. 1979. La ruta de las piritas. Bol. Grup Min. Català. 4: 12-14.

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