Arsenopyrite-Marcasite - Mineral specimens search results

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Mineral specimens search results for [ Arsenopyrite-Marcasite ]

NG27AL3: Arsenopyrite-Marcasite with Arsenopyrite and Siderite

Aggregate of iridescent, complete, epitactic Arsenopyrite-Marcasite crystals with polycrystalline cockscomb growths, very lustrous, on matrix, with elongated Arsenopyrite crystals and small brown rhombohedral Siderite crystals.
Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Region Portugal (±2005)
Specimen size: 7 × 5.8 × 4 cm = 2.76” × 2.28” × 1.57”

NE58AB5: Arsenopyrite-Marcasite with Calcite and Muscovite

Aggregate of complete and sharp epitaxial Arsenopyrite-Marcasite crystals that have cockscomb shaped polycrystalline growths. They are very bright and are on matrix, with small white Calcite crystals and leafy Muscovite aggregates.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Region Portugal (2004)
Specimen size: 11.7 × 6 × 3.8 cm = 4.61” × 2.36” × 1.50”

Main crystal size: 2.3 × 2 cm = 0.91” × 0.79”

ETX67AP0: Arsenopyrite-Marcasite with Ferberite and Muscovite

Parallel epitactic growths of Arsenopyrite-Marcasite crystals with very well defined and sharp crystal forms. Brilliant, with iridescence of various colors and on matrix. With Ferberite crystals, lenticular Siderite crystals and coatings of lamellar Muscovite crystals.
Minas da Panasqueira, levels 0-1, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Region Portugal (2020)
Specimen size: 5 × 4.8 × 4.3 cm = 1.97” × 1.89” × 1.69”

HM220NJA: Arsenopyrite-Marcasite with Muscovite

Group of Arsenopyrite crystals with very well defined crystal forms and good terminations, together with toothed aggregates of the “cockscomb” variety of Marcasite. Partially covered by very sharp lamellar crystals of Muscovite.
Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Region Portugal (±2005)
Specimen size: 6.8 × 5.3 × 4.8 cm = 2.68” × 2.09” × 1.89”

Main crystal size: 3.5 × 2.5 cm = 1.38” × 0.98”

AH90Z0: Arsenopyrite-Marcasite with Quartz with inclusions and Muscovite

Fan-like aggregates with a first metallic-gray growth phase of Arsenopyrite that progressively passes to a second phase of very sharp Arsenopyrite-Marcasite crystals, with a very clear and bright Quartz crystal, rich in inclusions, and with small leafy Muscovite aggregates.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Region Portugal (1987-2013)
Specimen size: 9.4 × 9.4 × 5.5 cm = 3.70” × 3.70” × 2.17”

MZ27AE7: Arsenopyrite-Marcasite with Siderite and Muscovite

Metallic gray prismatic Arsenopyrite crystals that are very bright, some of them doubly terminated, and have parallel epigenetic Marcasite growth with greenish color. They are on matrix, with small tabular Siderite crystals and leafy Muscovite aggregates.
Minas da Panasqueira, level 0, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Region Portugal
Specimen size: 7.3 × 6.9 × 3.8 cm = 2.87” × 2.72” × 1.50”

Main crystal size: 2 × 1.2 cm = 0.79” × 0.47”

NF47AN2: Arsenopyrite-Marcasite with Siderite and Muscovite

Fan-shaped aggregates of crystals formed by a first phase of Arsenopyrite with a metallic gray color, followed by a second phase with very sharp crystals of Arsenopyrite-Marcasite with the typical “cockscomb” habit. With lenticular crystals of Siderite of light cream color and leafy aggregates of Muscovite crystals.
Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Region Portugal (1999)
Specimen size: 13.4 × 8.8 × 3 cm = 5.28” × 3.46” × 1.18”

TP88P3: Epitactic Arsenopyrite-Marcasite with Calcite, Siderite and Chalcopyrite

Epitactic growths of very well defined crystals of Marcasite, with excellent luster, on prismatic crystals of Arsenopyrite and with thin coatings of small crystals of Siderite in some areas.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Region Portugal (1997)
Specimen size: 13 × 8.2 × 6.2 cm = 5.12” × 3.23” × 2.44”

AX86Y8: Epitactic Arsenopyrite-Marcasite with Muscovite

Very bright and sharp parallel growths of transitional Arsenopyrite-Marcasite with leafy Muscovite aggregates.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Region Portugal (1987-2013)
Specimen size: 5.5 × 5.4 × 3.7 cm = 2.17” × 2.13” × 1.46”

RF96N4: Epitactic Arsenopyrite-Marcasite with Pyrite

Multiple parallel growths of Arsenopyrite and Marcasite of very sharp and well defined forms, epigenetic on Pyrite.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Region Portugal (±1982)
Specimen size: 7.8 × 6.9 × 5.2 cm = 3.07” × 2.72” × 2.05”

Main crystal size: 1.8 × 1.8 cm = 0.71” × 0.71”

TG69X8: Epitactic Arsenopyrite-Marcasite with Siderite, Calcite and Muscovite

Epitaxial Marcasite on parallel growths of sharp Arsenopyrite crystals showing the so-called “key” shape. They are on matrix, with small white Calcite crystals, small Siderite crystals and leafy Muscovite aggregates.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Region Portugal (1997)
Specimen size: 13.7 × 10.7 × 8.2 cm = 5.39” × 4.21” × 3.23”

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