Reference Specimens
Spain

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Photos by Fabre Minerals. Under Creative Commons license

This page provides a selection of the specimens that have passed through the Fabre Minerals website and, due to their quality,
rarity, or significance as specimens from interesting locations, have been preserved as reference specimens in #MVM


LA RIOJA


Gypsum
Gypsum. Front
Front
Gypsum. Side
Side
Gypsum.
Gypsum  

NX13AJ9: Aggregate, on a thin matrix, of very sharp crystals, a lot of them doubly terminated, with apparently simple forms but richer than usual on terminal faces. They are clear, colorless and very bright.
The sample is from the Ignacio Hernández collection whose label we will send to the buyer.
Pepita Mine (Mine entrance Alcanadre), Alcanadre, Comarca Rioja Media, La Rioja  Spain

Specimen size: 7.7 × 3.2 × 5.1 cm = 3.03” × 1.26” × 2.01”

Main crystal size: 2.6 × 1.8 cm = 1.02” × 0.71”

Former collection of Ignacio Hernández

Pyrite from La Rioja

Spain is a country that is well known for its cubic Pyrite specimens. Although the most famous ones are those found at Navajun the whole region is full of small localities where one can also find crystals of Pyrite like Valdeperillos.

Pyrite
 

TML14AN7: Floater group with two very sharp Pyrite crystals, one of them clearly dominant and both very lustrous.
We will ship the specimen in its original Perky box from the Robert J. Noble collection, which also contains the label, which shows that it was previously in the Sullivan collection.
Ampliación a Victoria Mine, De Alcarama Range, Navajún, Comarca Cervera, La Rioja  Spain

Specimen size: 2 × 1.4 × 1.3 cm = 0.79” × 0.55” × 0.51”

Former collection of Bob Noble
Pyrite. Pyrite.
Pyrite
Pyrite. Pyrite.
 

TTR9AO1: Complete floater pentadodecahedral Pyrite crystal, with very sharp crystal forms, something unusual in specimens from this locality in which combined forms predominate.
We will send the buyer the specimen in its original perky box from the Robert J. (Bob) Noble collection, which also contains the label, stating that it was previously in the Melanson collection.

Ambas Aguas (Ambasaguas), Muro de Aguas, Comarca Arnedo, La Rioja  Spain

Specimen size: 2 × 1.8 × 1.9 cm = 0.79” × 0.71” × 0.75”

Former collection of Bob Noble
Pyrite

Fluorescent light (daylight)
 

JAB76AP8: Complete floater crystal of Pyrite with dominant cube faces and vertices truncated by octahedron faces, a well-known but unusual feature in specimens from Navajun.
This specimen comes from the collection of Andrés Jiménez Shelly and was previously in François Sabathier's.
Ampliación a Victoria Mine, De Alcarama Range, Navajún, Comarca Cervera, La Rioja  Spain

Specimen size: 2.4 × 2.3 × 2.3 cm = 0.94” × 0.91” × 0.91”

Former collection of François Sabathier

Former collection of Andrés Jiménez Shelly
Pyrite. Front
Front
Pyrite. Side
Side
Pyrite
Pyrite.
 

NA7E1: Good form and esthetic
Valdeperillo, Cornago, Comarca Arnedo, La Rioja  Spain (±1994)

Specimen size: 2.5 × 2.1 × 1.8 cm = 0.98” × 0.83” × 0.71”

Pyrite
 

NE57E1: Good form and esthetic.
Valdeperillo, Cornago, Comarca Arnedo, La Rioja  Spain (±1994)

Specimen size: 3 × 2.5 × 2.7 cm = 1.18” × 0.98” × 1.06”

Pyrite.
Pyrite
Pyrite. Front
Front
Pyrite. Rear
Rear
Pyrite. Side
Side
 

NB97T8: A novelty at Expominer (Barcelona) 2011. A crystal on matrix with an unusual flattened morphology, which is quite uncommon for Navajún. The edges, sharp and perfect, are completely natural and the crystal has been consolidated on its matrix to avoid its possible detachment.
Ampliación a Victoria Mine, level 1, De Alcarama Range, Navajún, Comarca Cervera, La Rioja  Spain (04-05/2011)

Specimen size: 4.7 × 4 × 3.5 cm = 1.85” × 1.57” × 1.38”

Main crystal size: 2.5 × 2.3 × 1.5 cm = 0.98” × 0.91” × 0.59”

Pyrite

Fluorescent light (daylight)
 

NBX90AP9: Very aerial group, on matrix, of sharp Pyrite crystals, shinier than usual for specimens from this historic locality (not to be confused with Navajún).
Valdeperillo, Cornago, Comarca Arnedo, La Rioja  Spain

Specimen size: 5.4 × 3 × 3.7 cm = 2.13” × 1.18” × 1.46”

Main crystal size: 2 × 1.7 cm = 0.79” × 0.67”

Pyrite. Front
Front
Pyrite. Side
Side
Pyrite
Pyrite. Front
Front
Pyrite. Side
Side
Pyrite. Side
Side

Fluorescent light (daylight)
 

NEA97AO5: Pyrite crystal with a very sharp parallelepiped shape, lustrous, undamaged and very aerial on its matrix. No repairs or reinforcements.
The specimen comes from the collection of Santiago Jiménez who, especially in the 1980s and '90s, put together an excellent collection with a very good representation of the mineralogy of northern Spain.
Valdeperillo, Cornago, Comarca Arnedo, La Rioja  Spain

Specimen size: 8.2 × 6.7 × 3.9 cm = 3.23” × 2.64” × 1.54”

Main crystal size: 4 × 1.3 cm = 1.57” × 0.51”

Former collection of Santiago Jiménez García
Pyrite

Fluorescent light (daylight)
 

MMB99AP3: Two isolated Pyrite crystals, very sharp, slightly flattened and very lustrous, on matrix. A Spanish classic of high quality.
Ampliación a Victoria Mine, De Alcarama Range, Navajún, Comarca Cervera, La Rioja  Spain (2022)

Specimen size: 9.1 × 5.6 × 5.1 cm = 3.58” × 2.20” × 2.01”

Main crystal size: 3.1 × 3.1 cm = 1.22” × 1.22”

Pyrite. Pyrite.
Pyrite
Pyrite. Front
Front
Pyrite. Rear
Rear
Pyrite.

Fluorescent light (daylight)
 

MRB71AP5: Isolated crystal of Pyrite, very aerial on the matrix, with perfect shapes, free of damage and very shiny. A Spanish classic of great quality for the deposit.
Ampliación a Victoria Mine, De Alcarama Range, Navajún, Comarca Cervera, La Rioja  Spain (2022)

Specimen size: 9.6 × 9.2 × 9.5 cm = 3.78” × 3.62” × 3.74”

Main crystal size: 4.4 × 4 cm = 1.73” × 1.57”

Pyrite

Fluorescent light (daylight)
 

TC2160NYM: Very sharp Pyrite crystals, aerial on the matrix and free from damage, something not always a given for specimens from this locality.
The specimen comes from the Miguel David Martínez collection (number 900), whose label we will send to the buyer.
Ampliación a Victoria Mine, De Alcarama Range, Navajún, Comarca Cervera, La Rioja  Spain (2021)

Specimen size: 11.6 × 11.3 × 7.2 cm = 4.57” × 4.45” × 2.83”

Main crystal size: 2.6 × 2.6 cm = 1.02” × 1.02”

Former collection of Miguel David Martínez
Pyrite.
Pyrite
Pyrite. Front
Front
Pyrite. Top
Top
 

PT59AH8: Single Pyrite crystal on a matrix partially coated by white aggregates of an unknown phyllosilicate. The crystal, a perfect cube, is very bright, free of damage and solidly attached in the matrix so it didn’t need to be reinforced. A Spanish classic, of great quality for the locality.
Ampliación a Victoria Mine, De Alcarama Range, Navajún, Comarca Cervera, La Rioja  Spain

Specimen size: 12 × 9 × 8.6 cm = 4.72” × 3.54” × 3.39”

Main crystal size: 3.5 × 3.5 cm = 1.38” × 1.38”

Pyrite

Fluorescent light (daylight)
Pyrite
 

SV640MTF: Isolated crystal of Pyrite, very aerial on the matrix, with perfect shapes and marked striations on the faces of the cube, free of damage and very bright.
A Spanish classic of great quality for the deposit.
Ampliación a Victoria Mine, De Alcarama Range, Navajún, Comarca Cervera, La Rioja  Spain (2022)

Specimen size: 12.6 × 10.4 × 10.6 cm = 4.96” × 4.09” × 4.17”

Main crystal size: 4.7 × 4.1 cm = 1.85” × 1.61”

Pyrite.
Pyrite.

Ambas Aguas (Ambasaguas) Pyrite

If you want to know more about Ambas Aguas Pyrite please follow this link

Pyrite
Pyrite.
 

NA57K7: Pentagonododecahedral (pyritohedral) crystals of Pyrite, one of them clearly dominant, with brilliant and sharp faces and edges. Noting the discovery year and the excellent preservation we believe that they will not be altered in the future.
Ambas Aguas (Ambasaguas), Muro de Aguas, Comarca Arnedo, La Rioja  Spain (1994)

Specimen size: 3.6 × 3 × 2.9 cm = 1.42” × 1.18” × 1.14”

Pyrite
 

NC58K7: Cubic crystals modified by pentagonododecahedral (pyritohedral) faces. Noting the discovery year and the excellent preservation we believe that they will not be altered in the future.
Ambas Aguas (Ambasaguas), Muro de Aguas, Comarca Arnedo, La Rioja  Spain (1994)

Specimen size: 3.6 × 3.2 × 3.4 cm = 1.42” × 1.26” × 1.34”

Main crystal size: 1.4 × 0.8 cm = 0.55” × 0.31”

Pyrite.
Pyrite
Pyrite.
 

ND9K7: Group formed by pentagonododecahedron (pyritohedral) crystals modified by cube faces, with very sharp and brilliant faces and edges. Noting the discovery year and the excellent preservation we believe that they will not be altered in the future.
Ambas Aguas (Ambasaguas), Muro de Aguas, Comarca Arnedo, La Rioja  Spain (1994)

Specimen size: 3.7 × 3.2 × 3.6 cm = 1.46” × 1.26” × 1.42”

Main crystal size: 1.2 × 1.1 cm = 0.47” × 0.43”

Pyrite
 

NR6I0: Crystals combine the forms of cube and pyritohedron and form a close group with curious curvatures on the faces and strong striations all along cube faces.
7 pit, Ambas Aguas (Ambasaguas), Muro de Aguas, Comarca Arnedo, La Rioja  Spain (08/2002)

Specimen size: 7 × 6 × 6.4 cm = 2.76” × 2.36” × 2.52”

Main crystal size: 3.7 × 3.6 cm = 1.46” × 1.42”

Pyrite. Front
Front
Pyrite. Rear
Rear
Pyrite
Pyrite. Pyrite.
 

L14DAI0: The crystals have one of the more classical combinations of forms from Ambasaguas, the cube and the pyritohedron, the first delicately striated. But it is not so common to find them on marly matrix because they are easily detached in mining.
Ambas Aguas (Ambasaguas), Muro de Aguas, Comarca Arnedo, La Rioja  Spain (1992)

Specimen size: 11 × 10.8 × 5.8 cm = 4.33” × 4.25” × 2.28”

Main crystal size: 2.2 × 2 cm = 0.87” × 0.79”


'Pine cone' Pyrite

At the Ambasaguas mine, famous for its pentagonododecahedral pyrites, from time to time they find a curious form of Pyrite in which hundreds of small crystals are grouped together in the form of a pine cone, all bound together by very strong marl. Over the years we have checked that these specimens are solid and stable, as the marl does not seem to alter. An unusual and aesthetic Spanish find.
If you want to know more about Ambasaguas Pyrite please follow this link

Pyrite 'pine cone'
 

NE11K7: Pine cone formed by small cubic crystals modified by pentagonododecahedron (pyritohedral) faces on the typical Ambasaguas matrix. Noting the discovery year, the matrix, and the excellent preservation we believe that they will not be altered in the future.
Ambas Aguas (Ambasaguas), Muro de Aguas, Comarca Arnedo, La Rioja  Spain (1994)

Specimen size: 4.5 × 4.5 × 4.5 cm = 1.77” × 1.77” × 1.77”

Main crystal size: 0.4 × 0.4 cm = 0.16” × 0.16”

Pyrite 'pine cone'.
Pyrite 'pine cone'
Pyrite 'pine cone'.
 

NG61K7: Pine cone formed by small cubic crystals modified by pentagonododecahedron (pyritohedral) faces on the typical Ambasaguas matrix. Noting the discovery year, the matrix, and the excellent preservation we believe that they will not be altered in the future.
Ambas Aguas (Ambasaguas), Muro de Aguas, Comarca Arnedo, La Rioja  Spain (1994)

Specimen size: 5.2 × 4.7 × 4 cm = 2.05” × 1.85” × 1.57”

Main crystal size: 0.4 × 0.3 cm = 0.16” × 0.12”

Pyrite 'pine cone'
 

NH12K7: Pine cone formed by small cubic crystals modified by pentagonododecahedron (pyritohedral) faces on the typical Ambasaguas matrix. Noting the discovery year, the matrix, and the excellent preservation we believe that they will not be altered in the future.
Ambas Aguas (Ambasaguas), Muro de Aguas, Comarca Arnedo, La Rioja  Spain (1994)

Specimen size: 6 × 4.2 × 4.1 cm = 2.36” × 1.65” × 1.61”

Main crystal size: 0.5 × 0.4 cm = 0.20” × 0.16”

Pyrite 'pine cone'.
Pyrite
Pyrite.
Pyrite.
 

N46GVC7: The strangest specimen that I have ever seen from Ambasaguas. A strange ball that is made up of thousands of small crystals. The matrix is very solid and the dark color means that it contrasts well with the yellow Pyrite.

Ambas Aguas (Ambasaguas), Muro de Aguas, Comarca Arnedo, La Rioja  Spain (1995)

Specimen size: 12.5 × 10.2 × 7.8 cm = 4.92” × 4.02” × 3.07”


MADRID (Community of Madrid)


Calcite after Gypsum
 

NC59AN2: Rosette aggregate of Calcite pseudomorphs after Gypsum crystals, translucent, with a certain luster and a uniform creamy white color. The specimen comes from a recent find in an area where we were not previously aware of the presence of these curious pseudomorphs. A rarity.
De Los Cazadores Ravine, Rivas-Vaciamadrid, Comarca Área metropolitana de Madrid, Community of Madrid  Spain (09/2020)

Specimen size: 4.7 × 4 × 4.1 cm = 1.85” × 1.57” × 1.61”

Fluorescent long & short UV
Calcite after Gypsum.
Calcite after Gypsum
Calcite after Gypsum.
 

NQ10AN2: Rosette aggregate of Calcite pseudomorphs after Gypsum crystals, translucent, with a certain luster and a uniform creamy white color. The specimen comes from a recent find in an area where we were not previously aware of the presence of these curious pseudomorphs. A rarity.
De Los Cazadores Ravine, Rivas-Vaciamadrid, Comarca Área metropolitana de Madrid, Community of Madrid  Spain (09/2020)

Specimen size: 5.4 × 4.6 × 4.4 cm = 2.13” × 1.81” × 1.73”

Fluorescent long & short UV
Calcite after Gypsum
 

NM10AN2: Rosette aggregate of Calcite pseudomorphs after Gypsum crystals, translucent, with a certain luster and a uniform creamy white color. The specimen comes from a recent find in an area where we were not previously aware of the presence of these curious pseudomorphs. A rarity.
De Los Cazadores Ravine, Rivas-Vaciamadrid, Comarca Área metropolitana de Madrid, Community of Madrid  Spain (09/2020)

Specimen size: 5.6 × 5.4 × 4 cm = 2.20” × 2.13” × 1.57”

Fluorescent long & short UV
Calcite after Gypsum.
Calcite after Gypsum
Calcite after Gypsum.
 

NG11AN2: Rosette aggregate of Calcite pseudomorphs after Gypsum crystals, translucent, with a certain luster and a uniform creamy white color. The specimen comes from a recent find in an area where we were not previously aware of the presence of these curious pseudomorphs. A rarity.
De Los Cazadores Ravine, Rivas-Vaciamadrid, Comarca Área metropolitana de Madrid, Community of Madrid  Spain (09/2020)

Specimen size: 5.9 × 5 × 4.8 cm = 2.32” × 1.97” × 1.89”

Fluorescent long & short UV
Calcite after Gypsum
 

NP61AN2: Rosette aggregate of Calcite pseudomorphs after Gypsum crystals, translucent, with a certain luster and a uniform creamy white color. The specimen comes from a recent find in an area where we were not previously aware of the presence of these curious pseudomorphs. A rarity.
De Los Cazadores Ravine, Rivas-Vaciamadrid, Comarca Área metropolitana de Madrid, Community of Madrid  Spain (09/2020)

Specimen size: 6 × 5.4 × 5.1 cm = 2.36” × 2.13” × 2.01”

Fluorescent long & short UV
Calcite after Gypsum.
Bavenite with Chlorite
Bavenite with Chlorite. Bavenite with Chlorite.
Bavenite with Chlorite  

NJ61AL3: Spheroidal aggregates of very lustrous translucent lamellar Bavenite crystals on matrix, with Chlorite.
The specimen comes from the Carlos González Bargueño collection, whose label we will send to the buyer. Carlos was the one who first found these Bavenites and thanks to his work these extraordinary specimens were saved. The Bavenites from Valdeconejillos are somewhat different from the better known ones from the Venero I quarry.
Valdeconejillos Quarry, Cadalso de los Vidrios, Comarca Sierra Oeste de Madrid, Community of Madrid  Spain (2006)

Specimen size: 2.5 × 1.4 × 1.4 cm = 0.98” × 0.55” × 0.55”

Main crystal size: 0.2 × 0.2 cm = 0.08” × 0.08”

Former collection of Carlos González Bargueño
Bavenite with Albite and Clinochlore
Bavenite with Albite and Clinochlore  

NH97AJ8: Aggregates of very sharp Bavenite crystals with polycrystalline growths. They are very bright and are on an Albite matrix spotted by very dark green Clinochlore.
The sample is from the Carlos González Bargueño collection whose label we will send to the buyer. Carlos was the first to find these Bavenites and it was thanks to his labor that these extraordinary samples have been saved.
Venero I Quarry (Cadalso I Quarry), "Panza de la Burra" pocket, Cadalso de los Vidrios, Comarca Sierra Oeste de Madrid, Community of Madrid  Spain (02/2003)

Specimen size: 3.2 × 2.4 × 1.6 cm = 1.26” × 0.94” × 0.63”

Main crystal size: 1 × 0.7 cm = 0.39” × 0.28”

Former collection of Carlos González Bargueño
Bavenite with Albite and Clinochlore. Bavenite with Albite and Clinochlore.
Bavenite with chlorite, Garnet, Quartz and Microcline
Bavenite with chlorite, Garnet, Quartz and Microcline. Bavenite with chlorite, Garnet, Quartz and Microcline.
 

NB26X9: Group of very well defined divergent sharp Bavenite crystals, very bright and on matrix, with Albite and Quartz crystals. The sample is from the Carlos González Bargueño collection, whose label we’ll send to the buyer. Carlos was the first to find these Bavenites and it was thanks to his labor that these extraordinary samples have been saved.
Venero I Quarry (Cadalso I Quarry), Cadalso de los Vidrios, Comarca Sierra Oeste de Madrid, Community of Madrid  Spain (2005)

Specimen size: 3.2 × 3 × 1.7 cm = 1.26” × 1.18” × 0.67”

Main crystal size: 1 × 0.6 cm = 0.39” × 0.24”

Bavenite with Microcline and Clinochlore
Bavenite with Microcline and Clinochlore  

NG57AJ8: Spheroidal aggregates of Bavenite crystals with laminar growths. They are very bright, have an ivory white color and are on a Microcline crystal matrix partially coated by very dark green Clinochlore.
The sample is from the Carlos González Bargueño collection whose label we will send to the buyer. Carlos was the first to find these Bavenites and it was thanks to his labor that these extraordinary samples have been saved.
Venero I Quarry (Cadalso I Quarry), Cadalso de los Vidrios, Comarca Sierra Oeste de Madrid, Community of Madrid  Spain (2003)

Specimen size: 3.3 × 2.6 × 2.2 cm = 1.30” × 1.02” × 0.87”

Main crystal size: 0.8 × 0.7 cm = 0.31” × 0.28”

Former collection of Carlos González Bargueño
Bavenite with Microcline and Clinochlore. Bavenite with Microcline and Clinochlore.
Bavenite with Pyrite, Fluorite and chlorite
Bavenite with Pyrite, Fluorite and chlorite. Bavenite with Pyrite, Fluorite and chlorite.
 

NE63X6: Spheroidal crystal of Bavenite with very sharp polycrystalline growths on its faces. It is very bright and is implanted on a Quartz matrix partially coated by Pyrite and chlorite and with a curiously added small crystal of purple Fluorite. The sample is from the Carlos González Bargueño collection, whose label we’ll send to the buyer. Carlos was the first to find these Bavenites and it was thanks to his labor that these extraordinary samples have been saved.
Venero I Quarry (Cadalso I Quarry), "Panza de la Burra" pocket, Cadalso de los Vidrios, Comarca Sierra Oeste de Madrid, Community of Madrid  Spain (02/2004)

Specimen size: 3.5 × 2.4 × 2.7 cm = 1.38” × 0.94” × 1.06”

Main crystal size: 0.5 × 0.5 cm = 0.20” × 0.20”

Former collection of Carlos González Bargueño
Bavenite with Albite and Chlorite
Bavenite with Albite and Chlorite  

NE62AL3: Spheroidal aggregates of sharp lamellar Bavenite crystals, lustrous and on matrix, with Albite and partial Chlorite coatings.
The specimen comes from the Carlos González Bargueño collection, whose label we will send to the buyer. Carlos was the one who first found these Bavenites and thanks to his work these extraordinary specimens were saved.
Venero I Quarry (Cadalso I Quarry), Cadalso de los Vidrios, Comarca Sierra Oeste de Madrid, Community of Madrid  Spain (2005)

Specimen size: 4.6 × 3.4 × 2.4 cm = 1.81” × 1.34” × 0.94”

Main crystal size: 0.5 × 0.4 cm = 0.20” × 0.16”

Former collection of Carlos González Bargueño

Albite fluorescent short UV
Bavenite with Albite and Chlorite. Bavenite with Albite and Chlorite.
Bavenite with Microcline, Clinochlore and Spessartine
Bavenite with Microcline, Clinochlore and Spessartine. Bavenite with Microcline, Clinochlore and Spessartine.
Bavenite with Microcline, Clinochlore and Spessartine  

ND50AJ8: Spheroidal aggregates of Bavenite crystals with very well defined polycrystalline growths. They are very bright and are on a Microcline matrix spotted by dark green Clinochlore and are with small Spessartine crystals with a very deep red color.
The sample is from the Carlos González Bargueño collection whose label we will send to the buyer. Carlos was the first to find these Bavenites and it was thanks to his labor that these extraordinary samples have been saved.
Venero I Quarry (Cadalso I Quarry), Cadalso de los Vidrios, Comarca Sierra Oeste de Madrid, Community of Madrid  Spain (2005)

Specimen size: 5.4 × 4.5 × 5.1 cm = 2.13” × 1.77” × 2.01”

Main crystal size: 2.6 × 1.9 cm = 1.02” × 0.75”

Former collection of Carlos González Bargueño
Bavenite with Quartz (variety smoky), Spessartine, Clinochlore and Microcline
Bavenite with Quartz (variety smoky), Spessartine, Clinochlore and Microcline  

NF72AJ8: Spheroidal aggregates of laminar Bavenite crystals that are very bright and are on a smoky Quartz crystal with a very dense color, with Microcline spotted by very dark green Clinochlore and a trapezohedral Spessartine crystal with a very deep red color.
The sample is from the Carlos González Bargueño collection whose label we will send to the buyer. Carlos was the first to find these Bavenites and it was thanks to his labor that these extraordinary samples have been saved.
Venero I Quarry (Cadalso I Quarry), Cadalso de los Vidrios, Comarca Sierra Oeste de Madrid, Community of Madrid  Spain (2003)

Specimen size: 6 × 4.2 × 4.4 cm = 2.36” × 1.65” × 1.73”

Former collection of Carlos González Bargueño
Bavenite with Quartz (variety smoky), Spessartine, Clinochlore and Microcline. Bavenite with Quartz (variety smoky), Spessartine, Clinochlore and Microcline.
Bavenite with Chabazite, chlorite and Microcline
Bavenite with Chabazite, chlorite and Microcline. Bavenite with Chabazite, chlorite and Microcline.
 

NR14Y4: Spheroidal Bavenite crystals with polycrystalline growths on their faces. They are very bright, have an ivory white color and are implanted on a Microcline matrix with small chlorite coatings, slightly smoky Quartz crystals, and, notably, small clear and very bright Chabazite crystals. The sample is from the Carlos González Bargueño collection, whose label we’ll send to the buyer. Carlos was the first to find these Bavenites and it was thanks to his labor that these extraordinary samples have been saved.
Venero I Quarry (Cadalso I Quarry), Cadalso de los Vidrios, Comarca Sierra Oeste de Madrid, Community of Madrid  Spain (2005)

Specimen size: 6.5 × 5 × 2.4 cm = 2.56” × 1.97” × 0.94”

Bavenite with smoky Quartz, Chlorite and Garnet
 

ND62Y9: Spheroidal aggregates and platy Bavenite crystals. They are very bright and are on a matrix with smoky Quarz, partially coated by Chlorite, also present as inclusions in the Quartz, and with small garnet crystals. Carlos González Bargueño was the first to find these Bavenites and it is thanks to his labor that these extraordinary samples have been saved.
Valdeconejillos Quarry, Cadalso de los Vidrios, Comarca Sierra Oeste de Madrid, Community of Madrid  Spain (2006)

Specimen size: 3.9 × 2.3 × 2.5 cm = 1.54” × 0.91” × 0.98”

Former collection of Carlos González Bargueño
Bavenite with smoky Quartz, Chlorite and Garnet. Bavenite with smoky Quartz, Chlorite and Garnet.
Bavenite with Microcline, Quartz and Chlorite
Bavenite with Microcline, Quartz and Chlorite. Bavenite with Microcline, Quartz and Chlorite.
 

NV14AA7: Aggregates of spheroidal Bavenite crystals with an ivory-white color and implanted on a Microcline matrix with small Quartz crystals and aggregates of Chlorite micro-crystals.
The sample is from the Carlos González Bargueño collection, whose label we will send to the buyer. Carlos was the first to find these Bavenites and it was thanks to his labor that these extraordinary samples have been saved.
This specimen was published on the Mineralogical Record´s web page, in the ‘What’s New in the Mineral World?’ section, report #39, December 06, 2014 edition.
Valdeconejillos Quarry, Cadalso de los Vidrios, Comarca Sierra Oeste de Madrid, Community of Madrid  Spain (2006)

Specimen size: 5.8 × 3.8 × 4.3 cm = 2.28” × 1.50” × 1.69”

Bavenite with Quartz (variety smoky)
Bavenite with Quartz (variety smoky)  

NQ62AL3: Spheroidal aggregates of lamellar Bavenite crystals, translucent, very shiny and on matrix, with small, very transparent and lustrous crystals of smoky Quartz.
The specimen comes from the Carlos González Bargueño collection, whose label we will send to the buyer. Carlos was the one who first found these Bavenites and thanks to his work these extraordinary specimens were saved. The Bavenites from Valdeconejillos are somewhat different from the better known ones from the Venero I quarry.
Valdeconejillos Quarry, Cadalso de los Vidrios, Comarca Sierra Oeste de Madrid, Community of Madrid  Spain (2006)

Specimen size: 4 × 2.8 × 2.3 cm = 1.57” × 1.10” × 0.91”

Main crystal size: 0.2 × 0.2 cm = 0.08” × 0.08”

Former collection of Carlos González Bargueño
Bavenite with Quartz (variety smoky). Bavenite with Quartz (variety smoky).
Albite with Bavenite and Smoky Quartz
Albite with Bavenite and Smoky Quartz. Albite with Bavenite and Smoky Quartz.
 

NC16F2: From a very new locality, the prisms of transparent smoky Quartz are on a matrix of Albite and are partially covered by small crystals of Bavenite, which is also present near the edges of the Albite.
Venero I Quarry (Cadalso I Quarry), Cadalso de los Vidrios, Comarca Sierra Oeste de Madrid, Community of Madrid  Spain (2004)

Specimen size: 6.5 × 6 × 5 cm = 2.56” × 2.36” × 1.97”

Smoky Quartz with Opal
 

NR11F2: From a very new locality, the prisms of smoky Quartz, which have excellent color and brilliance, form a fence of parallel crystals. A base covered by Opal, which adds contrast and support.
Venero I Quarry (Cadalso I Quarry), Cadalso de los Vidrios, Comarca Sierra Oeste de Madrid, Community of Madrid  Spain (2004)

Specimen size: 7.5 × 6.2 × 3.5 cm = 2.95” × 2.44” × 1.38”

Opal very fluorescent long & short UV
Smoky Quartz with Opal.
Quartz (variety citrine) with Clinozoisite-Epidote (Series) and Calcite
Quartz (variety citrine) with Clinozoisite-Epidote (Series) and Calcite. Front
Front
Quartz (variety citrine) with Clinozoisite-Epidote (Series) and Calcite. Rear
Rear
Quartz (variety citrine) with Clinozoisite-Epidote (Series) and Calcite  

EP96AI8: Group of two transparent and very bright Quartz (citrine variety) crystals with Calcite and partially coated by acicular, greenish-white crystals of the Clinozoisite-Epidote series.
The sample is from the Raúl Sanabria collection whose label we will send to the buyer.
The specimen has been photographed and published in the magazine ‘Paragénesis’, number 01/2019, page 88
Navazales Quarry (El Berrocal, Los Gallegos), La Cabrera pluton, Valdemanco - Bustarviejo, Comarca Sierra de Guadarrama, Community of Madrid  Spain

Specimen size: 7.4 × 7.1 × 4.7 cm = 2.91” × 2.80” × 1.85”

Main crystal size: 7.4 × 4.1 cm = 2.91” × 1.61”

Former collection of Raúl Sanabria
Quartz (variety smoky) with Orthoclase
Quartz (variety smoky) with Orthoclase  

EQ47AJ5: Group of smoky colored crystals between transparent and translucent with white phantom growths, very bright and on matrix with Microcline.
The sample is from the Raúl Sanabria collection whose label we will send to the buyer.
Navazales II Quarries, La Cabrera pluton, Valdemanco - Bustarviejo - Cabanillas de la Sierra - Navalafuente, Comarca Sierra Norte, Community of Madrid  Spain (02/2001)

Specimen size: 10 × 7.4 × 6.8 cm = 3.94” × 2.91” × 2.68”

Main crystal size: 8.7 × 5.6 cm = 3.43” × 2.20”

Former collection of Raúl Sanabria
Quartz (variety smoky) with Orthoclase. Front
Front
Quartz (variety smoky) with Orthoclase. Side
Side
Quartz with Orthoclase and Mica
Quartz with Orthoclase and Mica. Quartz with Orthoclase and Mica.

Fluorescent light (daylight)
 

ER54AM7: Group of Quartz crystals with distinct parallel growths on the prism faces, on a matrix of Orthoclase crystals twinned according to the Baveno law and with a parallel aggregate of lamellar Mica crystals, probably Muscovite. This specimen, of special interest due to the location, size and slightly citrine color of the Quartz, comes from the Raúl Sanabria collection, whose label we will send to the buyer.
Navazales Quarry (El Berrocal, Los Gallegos), La Cabrera pluton, Valdemanco - Bustarviejo, Comarca Sierra de Guadarrama, Community of Madrid  Spain (05/2001)

Specimen size: 21 × 10.1 × 13.2 cm = 8.27” × 3.98” × 5.20”

Main crystal size: 8.2 × 4.8 cm = 3.23” × 1.89”

Former collection of Raúl Sanabria
Microcline with Prehnite and Calcite
Microcline with Prehnite and Calcite  

EP67AJ5: Aerial group of Microcline crystals with a very well defined double Baveno-Manebach twin, and with echeloned parallel growths and partially coated by Prehnite crystals with a pale green color and white Calcite crystals.
The sample is from the Raúl Sanabria collection whose label we will send to the buyer.
Navazales Quarry (El Berrocal, Los Gallegos), La Cabrera pluton, Valdemanco - Bustarviejo, Comarca Sierra de Guadarrama, Community of Madrid  Spain (04/2001)

Specimen size: 11.1 × 8.6 × 7.3 cm = 4.37” × 3.39” × 2.87”

Main crystal size: 6.6 × 5.1 cm = 2.60” × 2.01”

Former collection of Raúl Sanabria
Microcline with Prehnite and Calcite. Front
Front
Microcline with Prehnite and Calcite. Side
Side
Microcline with Prehnite and Calcite.
Orthoclase twinned
Orthoclase twinned. Front
Front
Orthoclase twinned. Side
Side

Fluorescent light (daylight)
 

NBF76AO5: Orthoclase crystal with very sharp faces and edges and a very well defined double Baveno-Manebach twin.
The specimen comes from the collection of Santiago Jiménez who, especially in the 1980s and '90s, put together an excellent collection with a very good representation of the mineralogy of northern Spain.
Bustarviejo, Comarca Sierra Norte, Community of Madrid  Spain

Specimen size: 7.6 × 3.3 × 2.8 cm = 2.99” × 1.30” × 1.10”

Former collection of Santiago Jiménez García
Prehnite
 

N8CI0: The crystals have a globular aspect due to curved faces and edges. They have a soft clear greenish yellow color and an intense luster. They form a practically floating druse, except for a little fragment of Orthoclase on the back, where the specimen was fixed to the rocky matrix.
Isabel Quarry (La Saludadora Quarry), La Cabrera pluton, Valdemanco, Comarca Sierra de Guadarrama, Community of Madrid  Spain (03/1999)

Specimen size: 4.4 × 4.2 × 2.4 cm = 1.73” × 1.65” × 0.94”

Prehnite.
Prehnite with Calcite, Clinozoisite-Epidote and Quartz
Prehnite with Calcite, Clinozoisite-Epidote and Quartz. Front
Front
Prehnite with Calcite, Clinozoisite-Epidote and Quartz. Side
Side
Prehnite with Calcite, Clinozoisite-Epidote and Quartz.
 

NN6AK5: From a collection displayed for the first time at Munich 2019: Aggregate of spheroidal growths of Prehnite crystals, translucent, lustrous, and pale yellowish green. Partially coated with thin tabular crystals of translucent white Calcite. On matrix, with Quartz and microcrystals of Epidote-Clinozoisite.
The specimen is from the Miguel David Martínez collection (No. 105), whose label we will send to the buyer.
Isabel Quarry (La Saludadora Quarry), La Cabrera pluton, Valdemanco, Comarca Sierra de Guadarrama, Community of Madrid  Spain

Specimen size: 9.2 × 4.4 × 3.9 cm = 3.62” × 1.73” × 1.54”

Main crystal size: 0.6 × 0.5 cm = 0.24” × 0.20”

Former collection of Miguel David Martínez
Prehnite with Quartz, Orthoclase and Clinozoisite-Epidote
 

N46BG4: Crystals, defined and closely grouped, have an excellent luster and a pleasant clear color, between green and yellow. On the back side, around the Quartz, which is the nucleus of crystallization, some fragments of Orthoclase and little acicular crystals of a species in the series Epidote - Clinozoisite appear.
Isabel Quarry (La Saludadora Quarry), La Cabrera pluton, Valdemanco, Comarca Sierra de Guadarrama, Community of Madrid  Spain (02/1999)

Specimen size: 10.5 × 7.5 × 4 cm = 4.13” × 2.95” × 1.57”

Prehnite with Quartz, Orthoclase and Clinozoisite-Epidote. Front
Front
Prehnite with Quartz, Orthoclase and Clinozoisite-Epidote. Rear
Rear
Prehnite with Calcite, Orthoclase and Clinozoisite-Epidote (Series)
Prehnite with Calcite, Orthoclase and Clinozoisite-Epidote (Series). Prehnite with Calcite, Orthoclase and Clinozoisite-Epidote (Series).
Prehnite with Calcite, Orthoclase and Clinozoisite-Epidote (Series).
Prehnite with Calcite, Orthoclase and Clinozoisite-Epidote (Series)  

EB27AJ5: Spheroidal aggregates of Prehnite crystals that are well defined, translucent, with an excellent luster and a pale color, between green and yellow. They are on a matrix with Microcline, Clinozoisite and white tabular Calcite crystals.
The sample is from the Raúl Sanabria collection whose label we will send to the buyer.
Los Taberneros Quarry, (La Cabrera pluton), Los Taberneros, El Berrueco, Comarca Sierra Norte, Community of Madrid  Spain (03/1999)

Specimen size: 14.5 × 8.2 × 5.8 cm = 5.71” × 3.23” × 2.28”

Former collection of Raúl Sanabria
Clinozoisite-Epidote with Quartz and Orthoclase
 

N9EI7: Groups of acicular crystals of Clinozoisite-Epidote, clear and very bright, on a matrix of Orthoclase, mosaic growths of Quartz crystals and Albite.
Los Taberneros Quarry, (La Cabrera pluton), Los Taberneros, El Berrueco, Comarca Sierra Norte, Community of Madrid  Spain (02/1999)

Specimen size: 7.8 × 7 × 3.5 cm = 3.07” × 2.76” × 1.38”

Minor fluorescence short UV
Clinozoisite-Epidote with Quartz and Orthoclase. Clinozoisite-Epidote with Quartz and Orthoclase.
Quartz with Fluorapophyllite-(K)
Quartz with Fluorapophyllite-(K).
 

NQ7L2: This specimen comes from the pockets of the granite area of El Berrueco (Madrid). A big Quartz crystal partially covered by a thin layer of colorless but very bright and well defined Fluorapophyllite-(K) crystals. There are small and isolated generations of Fluorapophyllite crystals on the Quartz pyramid faces not covered by Fluorapophyllite-(K).
Los Taberneros Quarry, (La Cabrera pluton), Los Taberneros, El Berrueco, Comarca Sierra Norte, Community of Madrid  Spain (12/2002)

Specimen size: 7.9 × 5.9 × 5.3 cm = 3.11” × 2.32” × 2.09”

Main crystal size: 0.2 × 0.1 cm = 0.08” × 0.04”


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