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RM692   Turquoise

From a recent finding in an outcrop close to the Proserpina reservoir, near of the interesting city of Mérida (Badajoz). This specimen shows small turquoise crystals forming botryoidal aggregates with a nice bluish and greenish tones, partially covered by a second generation of more yellowish crystals. We'll send a copy of the analysis to the buyer. A Spanish novelty.

Size: 8,4 x 4,7 x 2,5 cm.
Found in 2013.
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RM664   Fluorite with quartz
CaF₂
  -  3. Halides

Group of fluorite crystal showing an elongated cubic prism, beveled on edges, with excellent violet color zoning. Directionally, they are partially covered with a layer of white quartz we wanted to preserve. They are very aerial disposed on a matrix covered by small but brilliant quartz crystals. They were extracted from la "coquera" (vug) called La Negrina (the black one), that appeared between March and April, 2006.

Size: 5,8 x 5,0 x 4,0 cm.
Main crystal: 13 x 10 mm.
Found in 03-04/2006.
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RM663   Calcite
Ca(CO3)
  -  5. Carbonides and nitrates

A very aesthetic and huge size group of calcite crystals showing rhombohedral forms, elongated along the main axis. Good definition, yellow color, due to the iron oxide coating. From a Spanish classic locality.

Size: 10,0 x 9,7 x 6,0 cm.
Main crystal: 20 x 18 mm.
Found in 2008.
Fluorescent under long wave UV
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RM662   Calcite
Ca(CO3)
  -  5. Carbonides and nitrates

A very aesthetic group of calcite crystals showing rhombohedral forms, elongated along the main axis. Good definition, yellow color, with greater intensity at the acute forms, due to the iron oxide coating. From a Spanish classic locality.

Size: 10,5 x 5,0 x 5,0 cm.
Main crystal: 20 x 15 mm.
Found in 2008.
Fluorescent under long wave UV
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RM665   Fluorite
CaF₂
  -  3. Halides

Druse of very sharp fluorite crystals, with transparence and excellent yellow color. From a classic Spanish mine for the species.

Size: 5,5 x 5,4 x 2,2 cm.
Main crystal: 9 x 8 mm.
Found in 2012.
Precio reducido-Reduced price 60€
Fluorescent under long wave UV
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RM651   Fluorite with quartz
CaF₂
  -  3. Halides

A rich group of well-defined cubic crystals of fluorite showing polysynthetic growth on faces. Violet-purple color is very, very intense, with geometrical zoning in the crystal core. Many of them are interpenetrating, giving the whole a unique aesthetics. From a classic Asturian locality.

Size: 9,5 x 6,5 x 5,0 cm.
Main crystal: 14 x 12 mm.
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RM640   Calcite with fluorite and Baryte
Ca(CO3)
  -  5. Carbonides and nitrates

Curious specimen of calcite from Moscona. Formed by some crystals, one of them predominant, with complex rhombohedrall faces with echeloned growth. Accompanied by tabular barite crystals and on a yellow fluorite matrix.

Size: 8,6 x 7,3 x 4,4 cm.
Main crystal: 28 x 25 mm.
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RM647   Fluorite with quartz
CaF₂
  -  3. Halides

Rich group of sharp isolated octahedral fluorite crystals, from translucent to transparent. They show an interesting apple green color. They are accompanied by small quartz crystals. On a granite matrix. This matrix is classic for modern specimens and comes from low levels of the Berta quarry.

Size: 7,0 x 6,0 x 3,3 cm.
Main crystal: 9 x 8 mm.
Found in ±2001.
Fluorescent under LW-UV and SW-UV lights
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RM646   Fluorite with quartz
CaF₂
  -  3. Halides

Rich group of sharp octahedral fluorite crystals, from translucent to transparent. They show an interesting apple green color. They are accompanied by small quartz crystals. On a granite matrix. This matrix is classic for modern specimens and comes from low levels of the Berta quarry.

Size: 6,5 x 6,2 x 2,4 cm.
Main crystal: 8 x 8 mm.
Found in ±2001.
Fluorescent under LW-UV and SW-UV lights
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RM645   Galena with dolomite and pyrite
PbS
  -  2. Sulfides and sulfosalts

A weakness, I admit. A cube-octahedral complex galena, defined edges, with polysynthetic growths on (111) faces. In one of them we can observe tiny crystals of pyrite and dolomite.
It comes from one of the classic mines of Catalonia: the Règia mine. In this mining area, occasionally, we could find small specimens but usually less defined. An opportunity to get a specimen from a classic Spanish locality.

Size: 4,2 x 4,0 x 1,8 cm.
Main crystal: 13 x 11 mm.
Found in ±1998.
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RM639   Calcite with barite
Ca(CO3)
  -  5. Carbonides and nitrates

Excellent and rich group of scalenohedral calcite crystals, with defined faces and edges. Some of them show the tips slightly reddish. They are very brilliant and translucent. Accompanied by shiny aggregates of tabular transparent barite crystals. A very showy specimen from a classic locality.

Size: 6,0 x 5,7 x 5,2 cm.
Main crystal: 23 x 12 mm.
Found in ±1995.
Precio reducido-Reduced price 65€
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RM636   Galena with marcasite, sphalerite and dolomite
PbS
  -  2. Sulfides and sulfosalts

Group of octahedral crystals of galena, well defined, some vertices truncated by the cube. They are disposed on a brilliant matrix covered by twinned marcasite, small rhombohedral crystals of dolomite and sphalerite with a honey color and transparence.
A sample from a classic Spanish locality. Old specimen, so the stability can be ensured.

Size: 5,7 x 4,0 x 3,5 cm.
Main crystal: 8 x 7 mm.
Found in ca. 2001
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RM365   Calcite with Dolomite
Ca(CO3)
  -  5. Carbonides and nitrates

In this sample we have a complex twinned escalenohedron group, "doubly terminated", with combination with the rhombohedron. Transparence is excellent, with defined faces and delicate edges.
These specimens appeared accompanied by pink dolomite, at level 6 of this mine. An excellent miniature from this classic Spanish locality. Calcite specimens from la Florida mines are known and valued worldwide.

Size: 5,4 x 4,0 x 3,8 cm.
Main crystal: 47 x 17 mm.
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RM621   Ferro-actinolite with magnetite and pyrite

A very rich group of prismatic crystals of ferro-actinolite of intense green, near to black color, brilliant, defined, with flattened terminal faces and some with pyrite on them. Aesthetics is excellent and the vertical disposition of the crystals makes this piece a different sample.
They are disposed on a matrix of albite with several rounded and brilliant magnetite crystals. Also with small pyrite with complex and interesting forms. This specimen is an excellent representative for the species and more, if possible, for this Spanish locality.

Size: 11,0 x 7,7 x 6,5 cm.
Main crystal: 18 x 2 mm.
Found in ±1980's.
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RM630   Epidote with actinolite
(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
  -  9. Silicates

On a rocky matrix of ophite we can enjoy several groups of fan-shaped epidote crystals. Intense green color and excellent brilliance. Prismatic crystals show flattened terminations. Acompanied by a layer of needle like actinolite crystals, fibrous and with a green bluish color. Specimens combining both species are uncommon because many times collectors clean specimens with water and eliminate this delicate formations. From a Catalan locality, a huge size and different aesthetics specimen.

Size: 10,0 x 7,0 x 5,7 cm.
Main crystal: 13 x 13 mm. (aggr)
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RM617   Variscite
AlPO₄ · 2H₂O
  -  8. Phosphates, arsenates and vanadates

In this double specimen we did not want to separate the two parts because symmetry gives them a very nice aesthetic touch. We can observe nodular aggregates of variscite. The green color is very intense. They are embedded in a type of silicified breccia matrix with iron oxides. Both are polished in the front side (which allows us enjoy the structures) and natural cut in the back side. To find samples of this quality you must go back to the past times.

Size: 9,7 x 5,8 x 4,0 cm. (x2)
Found in 2013.
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RM618   Variscite
AlPO₄ · 2H₂O
  -  8. Phosphates, arsenates and vanadates

In this double specimen we did not want to separate the two parts because symmetry gives them a very nice aesthetic touch. We can observe nodular aggregates and possible tigmatic folds in the veins of variscite. These meandering folds are caused by the flow of a viscous fluid into a more fluid media. The green color is very intense and it is combined with whitish and yellowish areas. They are embedded in a type of silicified breccia matrix. Polished in the front side (which allows us enjoy the structures) and natural cut in the back side. To find samples of this quality you must go back to the past times.

 

Size: 7,4 x 6,2 x 3,7 cm. (x2)
Found in 2013.
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RM616   Variscite
AlPO₄ · 2H₂O
  -  8. Phosphates, arsenates and vanadates

Specimen formed by nodular variscite aggregates showing concentric growths and intense apple green. They are embedded in a breccia matrix with limonite. It is polished on front side, necessary to enjoy structures, and natural on back side. To find specimens of this quality you must go back to the past.

Size: 8,3 x 5,4 x 1,8 cm.
Found in 2013.
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RM615   Variscite
AlPO₄ · 2H₂O
  -  8. Phosphates, arsenates and vanadates

Group of nodular variscite showing concentric growth and intense apple green color. They are embedded in kind of silicified breccia matrix. It is polished on front side, necessary to enjoy structures, and natural on back side. To find specimens of this quality you must go back to the past times.

Size: 8,5 x 6,5 x 3,5 cm.
Main crystal: 11 x 11 mm (nod)
Found in 2013.
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RM611   Hemimorphite

Nice hemimorphite specimen from a classic Basque mine. Mineral is covering with a crystalline crust the cavities of the carbonated matrix. Color varies between blue, green to colorless.

Size: 6,0 x 5,2 x 3,7 cm.
Found in 2008.
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RM607   Globular Fluorite with calcite, quartz and limonite
CaF₂
  -  3. Halides

Curious globular aggregates formed by numerous fluorite octahedral crystals that have grown together, reaching this globular shape. If you look closely under magnification the specimen you can observe different growing phases. So we can see perfect small colorless octahedra, others as groups of a few crystals sharing faces and symmetry, and some with many octahedrons close to this globular shape. Very fluorescent under SW-UV.
This green color is the best ever found for this site, with transparence and brilliance. They are disposed on an matrix of hard porphyry covered by minute quartz crystals, with calcite and goethitized cubic pyrite.

This area is known as Singuerlín (a neighborhood of Santa Coloma de Gramenet city, close to Barcelona) and from 60's collectors has found these globular aggregates with tones between white, yellow or slightly greenish. Then some specimens were analyzed and labeled as gearksutite. More recent analysis did not indicate the presence of this species but only fluorite.

Size: 8,7 x 6,0 x 3,7 cm.
Main crystal: 7 x 7 mm.
Found in 02-03/2013
Fluorescent under LW-UV and SW-UV lights
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RM606   Globular Fluorite with calcite, quartz and limonite
CaF₂
  -  3. Halides

Curious globular aggregates formed by numerous fluorite octahedral crystals that have grown together, reaching this globular shape. If you look closely under magnification the specimen you can observe different growing phases. So we can see perfect small colorless octahedra, others as groups of a few crystals sharing faces and symmetry, and some with many octahedrons close to this globular shape. Very fluorescent under SW-UV.
This green color is the best ever found for this site, with transparence and brilliance. They are disposed on an matrix of hard porphyry covered by minute quartz crystals, with calcite and goethitized cubic pyrite.

This area is known as Singuerlín (a neighborhood of Santa Coloma de Gramenet city, close to Barcelona) and from 60's collectors has found these globular aggregates with tones between white, yellow or slightly greenish. Then some specimens were analyzed and labeled as gearksutite. More recent analysis did not indicate the presence of this species but only fluorite.

Size: 10,0 x 6,5 x 5,2 cm.
Main crystal: 9 x 9 mm.
Found in 02-03/2013
Fluorescent under LW-UV and SW-UV lights
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RM605   Globular Fluorite with calcite, quartz and limonite
CaF₂
  -  3. Halides

Curious globular aggregates formed by numerous fluorite octahedral crystals that have grown together, reaching this globular shape. If you look closely under magnification the specimen you can observe different growing phases. So we can see perfect small colorless octahedra, others as groups of a few crystals sharing faces and symmetry, and some with many octahedrons close to this globular shape. Very fluorescent under LW-UV. This green color is the best ever found for this site, with transparence and brilliance. They are disposed on an matrix of hard porphyry covered by minute quartz crystals, with calcite and goethitized cubic pyrite.

This area is known as Singuerlín (a neighborhood of Santa Coloma de Gramenet city, close to Barcelona) and from 60's collectors has found these globular aggregates with tones between white, yellow or slightly greenish. Then some specimens were analyzed and labeled as gearksutite. More recent analysis did not indicate the presence of this species but only fluorite.

Size: 9,0 x 6,1 x 4,5 cm.
Main crystal: 8 x 7 mm.
Found in 02-03/2013
Fluorescent under LW-UV and SW-UV lights
Sold
RM602   Globular Fluorite with hidrozincite, quartz and limonite
CaF₂
  -  3. Halides

Curious globular aggregates formed by numerous fluorite octahedral crystals that have grown together, reaching this globular shape. If you look closely under magnification the specimen you can observe different growing phases. So we can see perfect small colorless octahedra, others as groups of a few crystals sharing faces and symmetry, and some with many octahedrons close to this globular shape. Very fluorescent under SW-UV.
This green color is the best ever found for this site, with transparence and brilliance. They are disposed on an matrix of hard porphyry covered by minute quartz crystals, with calcite and limonite. also some botryoidal white aggregates of hydrozincite.

This area is known as Singuerlín (a neighborhood of Santa Coloma de Gramenet city, close to Barcelona) and from 60's collectors has found these globular aggregates with tones between white, yellow or slightly greenish. Then some specimens were analyzed and labeled as gearksutite. More recent analysis did not indicate the presence of this species but only fluorite.

 

Size: 8,5 x 5,5 x 3,5 cm.
Main crystal: 7 x 7 mm.
Found in 02-03/2013
Fluorescent under LW-UV and SW-UV lights
Sold
RM600   Globular Fluorite with calcite, quartz and limonite
CaF₂
  -  3. Halides

Curious globular aggregates formed by numerous fluorite octahedral crystals that have grown together, reaching this globular shape. If you look closely under magnification the specimen you can observe different growing phases. So we can see perfect small colorless octahedra, others as groups of a few crystals sharing faces and symmetry, and some with many octahedrons close to this globular shape. Very fluorescent under SW-UV.
This green color is the best ever found for this site, with transparence and brilliance. They are disposed on an matrix of hard porphyry covered by minute quartz crystals, with calcite and goethitized cubic pyrite.

This area is known as Singuerlín (a neighborhood of Santa Coloma de Gramenet city, close to Barcelona) and from 60's collectors has found these globular aggregates with tones between white, yellow or slightly greenish. Then some specimens were analyzed and labeled as gearksutite. More recent analysis did not indicate the presence of this species but only fluorite.

 

Size: 10,7 x 7,2 x 3,8 cm.
Main crystal: 9 x 9 mm (aggr).
Found in 02-03/2013
Fluorescent under LW-UV and SW-UV lights
Sold