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AG12 - Siderite with Quartz. Panasqueira mines, Aldeia de Sao Francisco de Assis, Covilha, Castelo Branco, Portugal.

Group of rhombohedral crystals of Siderite with very well defined faces and edges. Partially coated by a thin layer of white Calcite. Associated to a very well crystallized translucent Quartz. In great condition. Watch video.

Specimen size: 8 cm x 6 cm

Not available

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AF09 - Quartz with Ferberite. Panasqueira mines, Aldeia de Sao Francisco de Assis, Covilha, Portugal.

Very nice mineral specimen from the Panasqueira mines. Flattened crystals of Ferberite in parallel growth associated with a very well formed crystal of Quartz. The Ferberite shows lustrous faces and very well defined terminations. A classic from the Panasqueira mines. In very good condition. Watch video. 

Specimen size: 8 cm x 5 cm

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AF20 - Ferberite, Quartz and Calcite. Panasqueira mines, Aldeia de Sao Francisco de Assis, Covilha, Portugal.

Aerial biterminated crystal of Ferberite perched on a matrix composed of Quartz crystals and very nice white crystals of Calcite. The Ferberite crystal shows striated faces and it is 3 cm by 2 m in size. Overall in very good condition, the bottom of the piece where was extracted from the mother rock has some damage. Aesthetic and fine Ferberite specimen. A Panasqueira classic with a very good aesthetic. Watch video.

Specimen size: 6 cm x 4 cm

Not available

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