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RM876   Bastnäsite-(Ce)

Trimouns, talc quarry, Luzenac, Ariège, Midi-Pyrénées, France

Very exceptional group of bastnäsite-(Ce) crystals. Good size, defined faces and edges, transparence, brilliance... And perfectly disposed on a dolomite crystal matrix with talc. A rare opportunity to obtain a top quality specimen of this REE carbonate from this classic French talc quarry.


Size: 7.0 x 4.1 x 4.1 cm.
Main crystal: 8 x 7 mm.

It shows Pleochroism
 

RM904   Bastnäsite-(Ce)

Trimouns, talc quarry, Luzenac, Ariège, Midi-Pyrénées, France

Very exceptional group of bastnäsite-(Ce) crystals. Good size, defined faces and edges, transparence, brilliance... And perfectly disposed on a dolomite crystal matrix. A rare opportunity to obtain a top quality specimen of this REE carbonate from this classic French talc quarry.


Size: 7.0 x 6.5 x 5.7 cm.
Main crystal: 10 x 8 mm.

It shows Pleochroism
 

RM746   Allanite-(Ce) with dolomite and calcite

Trimouns talc quarry, Luzenac, Ariège, Midi-Pyrénées, France

This specimen is showing a very rich group of allanite-(Ce) crystals, disposed randomly on a cavity covered by dolomite and calcite. This mineral with Rare Earth Elements (REE) is a classic for this French quarry, in the Pyrenees. It shows very elongated prismatic crystals, with transparence and brown to toasted honey tones.


Size: 9,2 x 6,5 x 5,5 cm.
Main crystal: 6 x 1 mm.
Found in ±2004.

 

RM609   Quartz with dolomite

Trimouns, Luzenac, Ariège, Midi-Pyrénées, France

Exceptional hyaline quartz crystal showing a developed prism with marked horizontal striations on faces and excellent terminal rhombohedral faces. Very sharp, perfect transparence anb best brilliance. Acompanied by a small matrix with dolomite rhombohedra. Specimen is better on hand than in pictures. This sample was collected from the dolomitic vugs of the Trimouns Talc quarry.


Size: 7,7 x 4,0 x 3,0 cm.
Main crystal: 77 x 30 mm.
Found in 06/2005.

 

RM547   Bastnäsite-(Ce) with allanite-(Ce) and Dolomite

Trimouns talc quarry, Luzenac, Ariège, Midi-Pyrénées, France

A single and sharp crystal of bastnäsite-(Ce) showing tabular hexagonal shape. They show a good transparency and color that varies between yellow-green to orange-brown, depending on the type of the light that strikes them. Accompanied by corroded allanite-(Ce) as usual in this paragenesis. This specimen is from a French worldwide classic mine for Rare Earth Elements (REE) species: Trimouns. Currently it is not easy to find bastnäsite-(Ce) specimens from this mine and with this crystal size.


Size: 5,9 x 4,8 x 3,3 cm.
Main crystal: 6 x 5 x 1 mm.
Found in 2006.

It shows Pleochroism
 

RM559   Allanite-(Ce) with calcite and talc

Trimouns talc quarry, Luzenac, Ariège, Midi-Pyrénées, France

Gem quality allanite-(Ce) specimen, with a good size, elongated and showing well defined faces and edges. It is embedded in the matrix of calcite with brilliant talc. Transparency and luster are excellent and shows a zoning toasted honey color, with green pleochroism visible depending on light. It is accompanied by other smaller crystal similarly defined and transparent. The area where I extracted no longer exists, when quarry has been extended. A piece of Rare Earths (REE) of a classic French locality, aesthetic and not easy to be found nowadays.


Size: 5,5 x 4,0 x 2,8 cm.
Main crystal: 15 x 3 mm.
Found in 2006.

It shows Pleochroism
 

RM384   Bastnäsite-(Ce) with talc and dolomite

Trimouns talc quarry, Luzenac, Ariège, Midi-Pyrénées, France

This specimen is from a worldwide classic mine for Rare Earth Elements (REE) species. We observe two groups of defined tabular hexagonal crystals with small pyramidal faces. They show a good transparency and color that varies between yellow-green to orange-brown, depending on the type of the light that strikes them. Currently it is not easy to find bastnäsite-(Ce) specimens from this mine and with this crystal size.


Size: 6,8 x 4,4 x 3,8 cm.
Main crystal: 6 x 4 mm.
Found in 2007.

It shows Pleochroism
 
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