Siderite 

  • A curious siderite after calcite preserving rhombohedral habit and also tabular and rounded forms. Color is toasted honey but varies between yellow to brown, with good ...

    Ref: 1J002

    Location: TURT OAS, SATU MARE, ROMANIA

    Dimensions: 31 X 15 X 14 cm.

    1 000 € 1 330 € Disponible
    Reduced price!
  • Lenticular siderite crystal with a good size and very brilliant surface. With a matrix formed by small muscovite crystals, quartz and fluorapatite. Fluorescence UVC. THE MAIN ...

    Ref: 1P014

    Location: PANASQUEIRA MINES, ALDEIA DE SÃO FRANCISCO DE ASSIS, COVILHÃ, CASTELO BRANCO, COVA DA BEIRA, PORTUGAL

    Dimensions: 13.5 X 7.8 X 7 cm.

    180 € 240 € Disponible
    Reduced price!
  • A rich group of siderite rhombohedral flattened crystals growing in a lenticular shape. Accompanied by some fluorapatite crystals with a marked hexagonal shape, green color and ...

    Ref: 1P050

    Location: PANASQUEIRA MINES, ALDEIA DE SÃO FRANCISCO DE ASSIS, COVILHÃ, CASTELO BRANCO, COVA DA BEIRA, PORTUGAL

    Dimensions: 12.1 X 6.3 X 2.5 cm.

    200 € 265 € Disponible
    Reduced price!
  • Group of siderite crystals with honey tones and translucent. They show deformed rhombohedra forms remembering the octahedron. On a minor matrix. Very curious for this mine.

    Ref: 1P132

    Location: PANASQUEIRA MINES, ALDEIA DE SÃO FRANCISCO DE ASSIS, COVILHÃ, CASTELO BRANCO, COVA DA BEIRA, PORTUGAL

    Dimensions: 3.2 X 2.9 X 1.3 cm.

    75 € 95 € Disponible
    Reduced price!
  • Panasqueira never ceases to amaze us. In this specimen we can enjoy a large group of fluorapatite crystals, very brilliant and with transparence, with a very attractive green ...

    Ref: 1P236

    Location: PANASQUEIRA MINES, ALDEIA DE SÃO FRANCISCO DE ASSIS, COVILHÃ, CASTELO BRANCO, COVA DA BEIRA, PORTUGAL

    Dimensions: 6.8 X 5 X 3 cm.

    635 € 845 € In Stock
    Reduced price!
  • A very interesting combo of flattened siderite rhombohedral crystals of intense greenish color and brilliance. They are accompanied by quartz, muscovite, a group of ...

    Ref: 1P240

    Location: PANASQUEIRA MINES, ALDEIA DE SÃO FRANCISCO DE ASSIS, COVILHÃ, CASTELO BRANCO, COVA DA BEIRA, PORTUGAL

    Dimensions: 6.5 X 8 X 3.5 cm.

    410 € 545 € In Stock
    Reduced price!
  • Group of fluorite crystals, with evident cubic symmetry, with well-defined faces and edges and a marked color zoning, combining blue with violet. Good transparence. On a matrix ...

    Ref: 1P256

    Location: PANASQUEIRA MINES, ALDEIA DE SÃO FRANCISCO DE ASSIS, COVILHÃ, CASTELO BRANCO, COVA DA BEIRA, PORTUGAL

    Dimensions: 4 X 3.7 X 3.1 cm.

    300 € 400 € In Stock
    Reduced price!
  • Group of tabular ferberite crystals, very well defined, interpenetrated among them, forming tabular prisms, with striated faces and well-defined terminations. Intense black ...

    Ref: 1P296

    Location: PANASQUEIRA MINES, ALDEIA DE SÃO FRANCISCO DE ASSIS, COVILHÃ, CASTELO BRANCO, COVA DA BEIRA, PORTUGAL

    Dimensions: 5.4 X 4.5 X 4.7 cm.

    300 € 400 € In Stock
    Reduced price!
  • Excellent cassiterite crystal that shows very well-defined faces and edges, the classic cyclical twinning and a certain transparency that allows seeing honeyed tones when light ...

    Ref: 1P297

    Location: PANASQUEIRA MINES, ALDEIA DE SÃO FRANCISCO DE ASSIS, COVILHÃ, CASTELO BRANCO, COVA DA BEIRA, PORTUGAL

    Dimensions: 4.5 X 4 X 3.6 cm.

    355 € 470 € In Stock
    Reduced price!
  • In this Panasqueira mines specimen we can observe groups of very bright and well defined arsenopyrite crystals, sprinkled with small pyrite crystals, and associated with a ...

    Ref: 1P303

    Location: PANASQUEIRA MINES, ALDEIA DE SÃO FRANCISCO DE ASSIS, COVILHÃ, CASTELO BRANCO, COVA DA BEIRA, PORTUGAL

    Dimensions: 4.4 X 4.1 X 3.6 cm.

    115 € 150 € In Stock
    Reduced price!
  • This miniature shows us a hexagonal crystal very well defined and faceted by the faces of the prism, truncated by the pinacoid and the faces of the hexagonal dipyramid are ...

    Ref: 1P306

    Location: PANASQUEIRA MINES, ALDEIA DE SÃO FRANCISCO DE ASSIS, COVILHÃ, CASTELO BRANCO, COVA DA BEIRA, PORTUGAL

    Dimensions: 4 X 3.4 X 2.4 cm.

    200 € 265 € In Stock
    Reduced price!
  • In this specimen we can see several ferberite crystals of very good size, with an excellent brilliance and a very deep black colour. Some of these crystals are even doubly ...

    Ref: 1P311

    Location: PANASQUEIRA MINES, ALDEIA DE SÃO FRANCISCO DE ASSIS, COVILHÃ, CASTELO BRANCO, COVA DA BEIRA, PORTUGAL

    Dimensions: 5.6 X 4.8 X 5.5 cm.

    300 € 400 € In Stock
    Reduced price!
  • Interesting miniature formed by pyrite crystals with a prismatic habit and very well-defined faces and edges. These forms of pyrite are not at all common. Another curiosity of ...

    Ref: 1P313

    Location: PANASQUEIRA MINES, ALDEIA DE SÃO FRANCISCO DE ASSIS, COVILHÃ, CASTELO BRANCO, COVA DA BEIRA, PORTUGAL

    Dimensions: 1.6 X 1.4 X 1.4 cm.

    125 € 170 € In Stock
    Reduced price!
  • Very curious siderite pseudomorph after calcite. Well defined rhombohedrons totally covered (by perimorphic processes) by a new generation of small siderite crystals. This ...

    Ref: 1R085

    Location: TURȚ MINE (GHEZURI MINE), TURȚ, NEGREȘTI-OAȘ, OAȘ MOUNTAINS, SATU MARE, SATU MARE, ROMANIA

    Dimensions: 7.9 X 7.7 X 2.5 cm.

    90 € 120 € Disponible
    Reduced price!
  • Very curious siderite pseudomorph after calcite. Well defined rhombohedron totally replaced (by perimorphic processes) by a new generation of small siderite crystals. This ...

    Ref: 1R086

    Location: TURȚ MINE (GHEZURI MINE), TURȚ, NEGREȘTI-OAȘ, OAȘ MOUNTAINS, SATU MARE, SATU MARE, ROMANIA

    Dimensions: 6.1 X 5.8 X 3.5 cm.

    55 € 75 € Disponible
    Reduced price!
  • Well defined rhombohedrons totally covered (by perimorphic processes) by a new generation of small siderite crystals. This specimen is perfect to show different siderite ...

    Ref: 1R125

    Location: TURȚ MINE (GHEZURI MINE), TURȚ, NEGREȘTI-OAȘ, OAȘ MOUNTAINS, SATU MARE, SATU MARE, ROMANIA

    Dimensions: 12.5 X 7.7 X 3.5 cm.

    145 € 195 € Disponible
    Reduced price!
  • Globular aggregates of pale tan siderite formed by crystals of the mineral and associated to rounded quartz crystals. Good contrast between quartz and siderite. As a curiosity, ...

    Ref: 1R276

    Location: TURȚ MINE (GHEZURI MINE), TURȚ, NEGREȘTI-OAȘ, OAȘ MOUNTAINS, SATU MARE, SATU MARE, ROMANIA

    Dimensions: 8.7 X 7.9 X 4.4 cm.

    145 € 195 € Disponible
    Reduced price!
  • A matrix with quartz and pyrite covered by huge size first generation rhombohedra siderite crystals partially disolved by a second generation of small siderite crystals, but ...

    Ref: 1R920

    Location: TURȚ MINE (GHEZURI MINE), TURȚ, NEGREȘTI-OAȘ, OAȘ MOUNTAINS, SATU MARE, SATU MARE, ROMANIA

    Dimensions: 20 X 12.2 X 4.1 cm.

    365 € 485 € Disponible
    Reduced price!
  • The beauty of this specimen must be considered by the disposition of the acicular to prismatic stibnite crystals emerging from the vugs of the siderite matrix. Good luster –not ...

    Ref: 1R940

    Location: HERJA MINE, BAIA MARE, ROMANIA

    Dimensions: 14.5 X 12.2 X 11.3 cm.

    590 € 785 € In Stock
    Reduced price!
  • On a matrix of small crystals of siderite they are disposed very aerial various prismatic crystals of vivianite in parallel growth, with very defined top terminal faces, thick, ...

    Ref: 1V160

    Location: HUANUNI MINE, HUANUNI, PANTALEON DALENCE PROVINCE, ORURO, BOLIVIA

    Dimensions: 8.4 X 6.7 X 2.1 cm.

    725 € 970 € In Stock
    Reduced price!
  • On a matrix of quartz crystals has grown a translucent fluorapatite crystal with a very uniform pink colour and very well-defined hexagonal faces, truncated by the pinacoids ...

    Ref: 1V217

    Location: KAMI MINE, AYOPAYA PROVINCE, COCHABAMBA, BOLIVIA

    Dimensions: 7.2 X 6 X 6.1 cm.

    1 090 € 1 450 € In Stock
    Reduced price!
  • On a matrix of hyaline quartz crystals, with a developed prism, several fluorapatite crystals of hexagonal shape are disposed. These present shapes of various order hexagonal ...

    Ref: 1V218

    Location: KAMI MINE, AYOPAYA PROVINCE, COCHABAMBA, BOLIVIA

    Dimensions: 7.5 X 5.3 X 7.4 cm.

    1 090 € 1 450 € In Stock
    Reduced price!

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