Ferberite - Mineral specimens search results

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Mineral specimens search results for [ Ferberite ]

RE77K8: Ferberite with Muscovite and Siderite

Tabular crystals, very deep and brilliant black in color with a string of Muscovite crystals in the upper third. Classic for the species, a contact twin on {100} is readily seen by the offset which forms the "ledge" upon which the Muscovite crystals are attached.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal (±1974)
Specimen size: 6.3 × 5.3 × 1.6 cm = 2.48” × 2.09” × 0.63”
Price: [SOLD]

RC97X8: Ferberite with Muscovite, Calcite, Pyrite and Chalcopyrite

Floater parallel growth of two complete Ferberite crystals with quite well-defined acute terminations, not too common at Panasqueira, and with white Calcite crystals, small leafy Muscovite aggregates and isolated crystals of Pyrite and Chalcopyrite on the back side.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal (±1968)
Specimen size: 9.4 × 7.3 × 2 cm = 3.70” × 2.87” × 0.79”

Main crystal size: 8 × 5.7 cm = 3.15” × 2.24”
Price: [SOLD]

RM67H3: Ferberite with Muscovite, Siderite and Quartz

Excellent crystals, thicker than usual for Panasqueira and with very sharp and bright faces and edges. The faces are partially covered by spheroidal groups of Muscovite and small lenticular crystals of Siderite.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal
Specimen size: 5.5 × 3.5 × 2 cm = 2.17” × 1.38” × 0.79”
Price: [SOLD]

JFD100AO2: Ferberite with Pyrite

Despite their general uniformity, Panasqueira specimens can show a lot of variety. This Ferberite is very different from those that usually appear there since its crystals are highly elongated and fine, forming a kind of lattice. Fortunately, I am certain that it is from there since I bought it in 1990 in the mine 'Escritorio', freshly extracted from the mine by Zé da Tropa.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal (1990)
Specimen size: 2.5 × 2.3 × 1.9 cm = 0.98” × 0.91” × 0.75”

Main crystal size: 1.4 × 0.2 cm = 0.55” × 0.08”
Price: [SOLD]

RM46Q5: Ferberite with Pyrite and Quartz

Group of crystals of Ferberite, some of them doubly terminated, with very well defined forms and with pyramidal faces, rare on the samples from Panasqueira. With Quartz and small coatings of Pyrite.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal (±1965)
Specimen size: 7.5 × 6.5 × 4.4 cm = 2.95” × 2.56” × 1.73”
Price: [SOLD]

RM86K4: Ferberite with Quartz

Closed, dense group of crystals of thick tabular appearance, one of them clearly dominant, with an excellent definition of faces and edges and intense luster. On the backside there is a small Quartz crystal.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal (±1980)
Specimen size: 5.8 × 4.7 × 3.4 cm = 2.28” × 1.85” × 1.34”
Price: [SOLD]

CR47AH6: Ferberite with Quartz and Muscovite

Ferberite crystals with very well defined parallel growths, with very well defined faces and edges and excellent terminations. It is very bright and aerial on an elegant base with a Quartz crystal and rosette-like aggregates of very sharp tabular Muscovite crystals. We’ll send to the buyer the original label and also a copy of the computer card with the full collection catalog text.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal (±1984)
Specimen size: 5.5 × 5 × 3.7 cm = 2.17” × 1.97” × 1.46”
Price: [SOLD]

JFD242AQ1: Ferberite with Quartz and Muscovite

Panasqueira ferberites are among the standard-bearers of that mining district, but have always been difficult to acquire without flaws and with a certain “dynamism”, like this piece in which the many Ferberite crystals seem scattered in the Quartz crystals, which are very transparent and have small Muscovite rosettes at their base.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal (1996)
Specimen size: 4 × 3.9 × 5.4 cm = 1.57” × 1.54” × 2.13”

Main crystal size: 1.7 × 1.2 cm = 0.67” × 0.47”
Price: [SOLD]

AA30Y8: Ferberite with Quartz, Arsenopyrite and Muscovite

Thick Ferberite crystals with very well defined faces and edges. They are very bright, have very well defined parallel growths and are on a matrix of Quartz crystals, with Arsenopyrite crystals and partially coated by Muscovite.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal (1987-2013)
Specimen size: 7.3 × 5.4 × 5.7 cm = 2.87” × 2.13” × 2.24”
Price: [SOLD]

TC24300PBV: Ferberite with Quartz, Calcite-Dolomite and Siderite

Polycrystalline and parallel growths of large Ferberite crystals with very sharp habits, associated with a Quartz crystal and with white Calcite-Dolomite coatings and lenticular Siderite crystals. A monster. Among the best known of this size.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal
Specimen size: 20.5 × 17 × 10.5 cm = 8.07” × 6.69” × 4.13”

Main crystal size: 18 × 6.7 cm = 7.09” × 2.64”
Price: €4300 / US$4580 / ¥701580 / AUD$7050

N13BIK9: Ferberite with Siderite

Parallel growth of prismatic crystals of Ferberite partially covered (totally on the rear) by Siderite crystals, most of them doubly terminated.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal (1995)
Specimen size: 7.5 × 4.7 × 3.8 cm = 2.95” × 1.85” × 1.50”
Price: [SOLD]

RH66H7: Ferberite with Siderite

Parallel group of prismatic crystals well defined, bright and having well defined terminations. The matrix is formed by tabular crystals of Siderite.On the back side is a minor crystal, probable Scheelite, visible with the UV light. Curiously, Scheelite is a scarce species at the Panasqueira Mine.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal
Specimen size: 4.8 × 3.6 × 2.6 cm = 1.89” × 1.42” × 1.02”

Main crystal size: 4.8 × 2.2 cm = 1.89” × 0.87”
Price: [SOLD]

NB6E6: Ferberite with Siderite

Very well defined, floater crystals of Ferberite. There is also some Mica and Siderite with them. Given their brilliance and perfection you can consider them to be one of the better quality Ferberites from the Panasqueira mines.
Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal (2004)
Specimen size: 5.7 × 5.3 × 2.5 cm = 2.24” × 2.09” × 0.98”
Price: [SOLD]

RA76T5: Ferberite with Siderite

Parallel growth of flattened prismatic crystals with very well defined faces and edges and partially coated by small lenticular crystals of Siderite.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal (±1966)
Specimen size: 7.3 × 4.8 × 3.8 cm = 2.87” × 1.89” × 1.50”

Main crystal size: 3.9 × 3.5 cm = 1.54” × 1.38”
Price: [SOLD]

NT86AA4: Ferberite with Siderite and Muscovite

Parallel growth of flattened Ferberite crystals partially coated by leafy Muscovite aggregates and small tabular Siderite crystals with concentric geometric color zoning.
Minas da Panasqueira, level 0, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal (07/2014)
Specimen size: 5.8 × 6.1 × 1.3 cm = 2.28” × 2.40” × 0.51”
Price: [SOLD]

AC51AB8: Ferberite with Siderite and Muscovite

Ferberite crystals, some of them doubly terminated, with parallel growths, with very well defined forms and with widely developed pyramidal faces, rare for samples from Panasqueira. They are very bright and are on a Siderite matrix, with Muscovite and small Arsenopyrite crystals. A classic of great quality for the locality.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal (1987-2013)
Specimen size: 8 × 5.9 × 5 cm = 3.15” × 2.32” × 1.97”

Main crystal size: 6.8 × 5.5 cm = 2.68” × 2.17”
Price: [SOLD]

HM180VF: Ferberite with Siderite and Pyrite

Ferberite crystal, on matrix, very aerial, with very well marked parallel polycrystalline growths, lustrous, and partially covered by lenticular crystals of Siderite and small cubic Pyrite crystals.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal
Specimen size: 8.6 × 5.6 × 5.8 cm = 3.39” × 2.20” × 2.28”
Price: €180 / US$191 / ¥29360 / AUD$290

42 results found.

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