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RM2576   Čechite and fluorite

Maria Magdalena Mine, Rasa de l'Alzina, Ulldemolins, Tarragona, Catalunya, Spain

Probably čechite specimens from the "Rasa de l'Alzina" open pit works could be considered between the best crystals for the species worldwide. They are brilliant, black color and show a tabular shape defined by different order orthorhombic prisms and developed pinacoidal faces. They are disposed on a fluorite matrix. This finding is close to the Maria Magdalena mine, near of the beautiful town of Ulldemolins (Tarragona, Catalonia).
SEM-EDS and EPMA analysis show that, in some cases, on the čechite crystal surface we found copper content, but inside the crystal is near to pure  PbFe2+(VO4)(OH), with minor Zn(II). In most specimens from other localities the presence of manganese is important, but these specimens are Mn free.


Size: 5 x 3.8 x 3.3 cm.
Found in ±2017.

Analyzed specimen with report
 

RM1974   Čechite

Maria Magdalena Mine, Rasa de l'Alzina, Ulldemolins, Tarragona, Catalunya, Spain

These specimens were found in a outcrop close to Maria Magdalena mine, close to the beautiful town of Ulldemolins (Tarragona, Catalonia). Probably, these crystals are the most defined crystals of Čechite worldwide. They are brilliant, black color and show a tabular shape defined by different order orthorhombic prisms and pinacoidal faces. Disposed very aerial on a fluorite matrix.
Čechite is very rare lead iron vanadate that is only found in a few places in the world and it is the first citation in the Iberian peninsula.
SEM-EDS and EPMA analysis show that, in some cases, on the crystal surface there is Cu2+ has been formed but the crystal is pure PbFe2+(VO4)(OH). In most specimens (all) from other localities the presence of manganese is important, but these specimens are Mn free. We will send more details to the buyer.


Size: 4 x 2 x 1.8 cm.
Main crystal: 1 mm.



 

RM1604   Čechite with fluorite

Maria Magdalena Mine, Rasa de l'Alzina, Ulldemolins, Tarragona, Catalunya, Spain

Probably čechite specimens from the "Rasa de l'Alzina" open pit works could be considered between the best crystals for the species worldwide. They are brilliant, black color and show a tabular shape defined by different order orthorhombic prisms and developed pinacoidal faces. They are disposed on a fluorite matrix. This finding is close to the Maria Magdalena mine, near of the beautiful town of Ulldemolins (Tarragona, Catalonia).
SEM-EDS and EPMA analysis show that, in some cases, on the čechite crystal surface we found copper content, but inside the crystal is near to pure PbFe<sup>2+</sup>(VO<sub>4</sub>)(OH), with minor Zn(II). In most specimens from other localities the presence of manganese is important, but these specimens are Mn free.


Size: 5.5 x 4.2 x 2.4 cm.
Found in 2016-2017.

 

RM1605   Čechite with fluorite

Maria Magdalena Mine, Rasa de l'Alzina, Ulldemolins, Tarragona, Catalunya, Spain

Probably čechite specimens from the "Rasa de l'Alzina" open pit works could be considered between the best crystals for the species worldwide. They are brilliant, black color and show a tabular shape defined by different order orthorhombic prisms and developed pinacoidal faces. They are disposed on a fluorite matrix. This finding is close to the Maria Magdalena mine, near of the beautiful town of Ulldemolins (Tarragona, Catalonia).
SEM-EDS and EPMA analysis show that, in some cases, on the čechite crystal surface we found copper content, but inside the crystal is near to pure  PbFe2+(VO4)(OH), with minor Zn(II). In most specimens from other localities the presence of manganese is important, but these specimens are Mn free.


Size: 7.0 x 4.5 x 2.7 cm.
Found in 2016-2017.

Analyzed specimen with report


 

RM721   Fluorite with baryte

Maria Magdalena mine, Font del Metge area, Ulldemolins, Tarragona, Catalunya, Spain

Druse of cubic fluorite crystals with yellow color. With some transparence to translucent. On the crystals we can observe different baryte aggregates formed by tabular white crystals. This specimen is notable for its locality where it is uncommon to find this association. A sample for fluorite and/or Spanish classic localities.


Size: 10,5 x 7,4 x 3,5 cm.
Main crystal: 17 x 13 mm.
Found in 25/8/2013

Fluorescent under long wave UV
 
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