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Mineral specimens search results for [ Pyrite ]Page bottom

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NE57E1: Pyrite
Good form and esthetic.
Valdeperillo, Cornago, Comarca Arnedo, La Rioja  Spain (±1994)
Specimen size: 3 × 2.5 × 2.7 cm = 1.18” × 0.98” × 1.06”
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NG61K7: Pyrite 'pine cone'
Pine cone formed by small cubic crystals modified by pentagonododecahedron (pyritohedral) faces on the typical Ambasaguas matrix. Noting the discovery year, the matrix, and the excellent preservation we believe that they will not be altered in the future.
Ambas Aguas (Ambasaguas), Muro de Aguas, Comarca Arnedo, La Rioja  Spain (1994)
Specimen size: 5.2 × 4.7 × 4 cm = 2.05” × 1.85” × 1.57”

Main crystal size: 0.4 × 0.3 cm = 0.16” × 0.12”
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NE11K7: Pyrite 'pine cone'
Pine cone formed by small cubic crystals modified by pentagonododecahedron (pyritohedral) faces on the typical Ambasaguas matrix. Noting the discovery year, the matrix, and the excellent preservation we believe that they will not be altered in the future.
Ambas Aguas (Ambasaguas), Muro de Aguas, Comarca Arnedo, La Rioja  Spain (1994)
Specimen size: 4.5 × 4.5 × 4.5 cm = 1.77” × 1.77” × 1.77”
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NH12K7: Pyrite 'pine cone'
Pine cone formed by small cubic crystals modified by pentagonododecahedron (pyritohedral) faces on the typical Ambasaguas matrix. Noting the discovery year, the matrix, and the excellent preservation we believe that they will not be altered in the future.
Ambas Aguas (Ambasaguas), Muro de Aguas, Comarca Arnedo, La Rioja  Spain (1994)
Specimen size: 6 × 4.2 × 4.1 cm = 2.36” × 1.65” × 1.61”

Main crystal size: 0.5 × 0.4 cm = 0.20” × 0.16”
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SM120NHB: Pyrite (octahedral)
Very sharp and lustrous octahedral Pyrite crystal growths. Curiously, octahedral pyrite is quite a rarity in Spanish mineralogy, especially in this case since it comes from a little-known Aragonese locality.
Carmen y Pura Group of mines, Foz-Calanda, Comarca Bajo Aragón, Teruel, Aragon  Spain (01/2013)
Specimen size: 10.8 × 9.4 × 5.2 cm = 4.25” × 3.70” × 2.05”

TMX90CD5: Pyrite (octahedral)
Group of octahedral Pyrite crystals, very lustrous, with very well defined faces and edges, and with golden reflections on the faces that have rough shapes, with somewhat developed and very smooth edges, and with the vertices truncated by pinacoid faces that in turn show growth striations. Of considerable size and great crystallographic complexity.
Huanzala Mine, Huallanca District, Dos de Mayo Province, Huánuco Department  Peru (08-11/2023)
Specimen size: 15 × 11.1 × 5.9 cm = 5.91” × 4.37” × 2.32”

Main crystal size: 3.5 × 3.1 cm = 1.38” × 1.22”
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JFD234AQ0: Pyrite (octahedral) with Calcite-Dolomite and Ferberite
The Panasqueira mine has produced many pyrites, but of all that multitude there have been very few octahedral ones. This piece serves as a good example of that 'rarity'.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Region  Portugal (1997)
Specimen size: 5 × 4 × 2 cm = 1.97” × 1.57” × 0.79”

MZB27XXX: Pyrite after ammonites
Pyrite that completely replaces a fossil ammonite, very clearly preserving its original morphology. The good size of the Pyrite crystals stands out, as well as the integrity of the fossil, which appears complete and perfect, something not very common in this type of replacement. A very representative piece from this interesting French locality. The area corresponds to Mesozoic marine sedimentary formations rich in fossils. The mineralization is related to diagenetic replacement processes, in which the original ammonite material is replaced by Pyrite under reducing conditions, preserving its structure in detail.
Saint-Denis-d'Orques, La Flèche area, Sarthe Department, Pays de la Loire  France
Specimen size: 7.8 × 4 × 3.2 cm = 3.07” × 1.57” × 1.26”

Main crystal size: 1.6 × 1.3 cm = 0.63” × 0.51”
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SV220NBX: Pyrite after Pyrrhotite
Group of Pyrrhotite crystals with hexagonal outlines, fully pseudomorphed by small, but very bright, Pyrite crystals covering the old crystals of Pyrrhotite, and with small carbonate crystals scattered on top of the Pyrite crystals. This association of sulfides and carbonates is a classic of this old mine in the La Union mining district.
Tomasa Mine, La Fortuna, Sierra Minera de Cartagena-La Unión, La Unión, Comarca Campo de Cartagena, Region of Murcia (Murcia)  Spain
Specimen size: 8.4 × 6.5 × 4.4 cm = 3.31” × 2.56” × 1.73”
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SV230TPP: Pyrite after Pyrrhotite
Multitude of Pyrrhotite crystals with very distinct hexagonal outlines and completely pseudomorphed by small, but very shiny, Pyrite crystals, some of them iridescent, covering them with rounded shape the ancient crystals of pyrrhotite. One of the best specimens from a find made in 2018 in one of the best-known and largest mines in the La Unión mining district, in Murcia, the Balsa Depositaria mine.
Mina Balsa Depositaria, El Pino, El Gorguel, Cartagena, Comarca Campo de Cartagena, Region of Murcia (Murcia)  Spain (±2018)
Specimen size: 7.6 × 7.2 × 6.4 cm = 2.99” × 2.83” × 2.52”
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HM140EC: Pyrite after Pyrrhotite and with Sphalerite
Druse of Pyrite crystals with a bright luster and a deformed cubic habit along with small faces of other crystal forms, pseudomorphic after Pyrrhotite crystals with a clearly hexagonal outline, and partially covered by twinned Sphalerite crystals.
Stan Trg (Stan Terg, Stari Trg) Mine, Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District  Kosovo (2012)
Specimen size: 8.6 × 5.6 × 3.7 cm = 3.39” × 2.20” × 1.46”
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EF86AK6: Pyrite after Pyrrhotite with Calcite
Pyrite crystals with deformed cubic habit, very lustrous, pseudomorphing hexagonal Pyrrhotite crystals and partially coated with small white crystals of Calcite. A fine miniature, very aesthetic and bright.
Stan Trg (Stan Terg, Stari Trg) Mine, Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District  Kosovo (2010)
Specimen size: 4.1 × 3.9 × 2.5 cm = 1.61” × 1.54” × 0.98”
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EZ47AF5: Pyrite after Pyrrhotite with Calcite, plumosite inclusions and Rhodochrosite
Rosette growths of laminar Pyrite crystals, pseudomorphous after Pyrrhotite, extraordinarily bright, with small white Calcite crystals and globular Calcite growths with gray plumosite inclusions. Never seen before with this quality at Trepča.
The specimen has been reviewed, photographed and published as a novelty from Ste. Marie 2017 in the Russian magazine ‘Mineral Observer’ on page 73 in the volume 23, number 1
Stan Trg (Stan Terg, Stari Trg) Mine, Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District  Kosovo (2017)
Specimen size: 8.7 × 7.3 × 4 cm = 3.43” × 2.87” × 1.57”
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EH47AK6: Pyrite after Pyrrhotite with Galena and Calcite
Druse of Pyrite crystals with deformed cubic habit, very lustrous, pseudomorphing hexagonal Pyrrhotite crystals with vertices bordered by white lenticular crystals of Calcite. On matrix, with Sphalerite.
Stan Trg (Stan Terg, Stari Trg) Mine, Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District  Kosovo (2019)
Specimen size: 11.4 × 7.8 × 5.6 cm = 4.49” × 3.07” × 2.20”
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TBT76AO6: Pyrite after Pyrrhotite with Galena, Arsenopyrite, Sphalerite and Chalcopyrite
Brilliant cubic Pyrite crystals with polycrystalline growths, forming pseudomorphs after Pyrrhotite crystals with a hexagonal outline. On matrix, with well differentiated crystals of Galena, Sphalerite, Chalcopyrite and Arsenopyrite, the latter very abundant and extraordinarily sharp and shiny.
Stan Trg (Stan Terg, Stari Trg) Mine, Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District  Kosovo (2000-2020)
Specimen size: 8.8 × 6.8 × 2.4 cm = 3.46” × 2.68” × 0.94”
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NFX90AN9: Pyrite after Pyrrhotite with Galena, Calcite, Quartz and Dolomite
Large pseudomorphs with a hexagonal outline of Pyrite after Pyrrhotite crystals, with coatings of complex white Calcite crystals, cubo-octahedral Galena crystals and small Quartz and Dolomite crystals. An old piece, since the mine is not currently producing this type of specimen with large Galena crystals.
Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District  Kosovo
Specimen size: 16 × 12.5 × 10.5 cm = 6.30” × 4.92” × 4.13”

Main crystal size: 9.3 × 6.8 cm = 3.66” × 2.68”
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EB69AM6: Pyrite after Pyrrhotite with Pyrite, Rhodochrosite, Sphalerite and Quartz
Druse of very sharp parallel Pyrite growths, pseudomorphs after Pyrrhotite, on matrix, with Rhodochrosite, twinned crystals of Sphalerite, Quartz and small crystals of a second generation of Pyrite with a bright and vivid color.
Stan Trg (Stan Terg, Stari Trg) Mine, Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District  Kosovo (2018)
Specimen size: 17.1 × 13.6 × 8.7 cm = 6.73” × 5.35” × 3.43”
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ME56AN0: Pyrite after Pyrrhotite with Sphalerite
Mosaic of small Pyrite crystals pseudomorphing an elongated Pyrrhotite crystal on a matrix of Sphalerite crystals. Different. We will ship the specimen, which comes from a classic Mexican locality for the species, in its original Perky box from the Robert J. Noble collection, which also contains the label.
Potosí Mine, Santo Domingo (Francisco Portillo), Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico
Specimen size: 3.1 × 1.3 × 1.1 cm = 1.22” × 0.51” × 0.43”

Main crystal size: 2.2 × 0.8 cm = 0.87” × 0.31”
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EA51AK6: Pyrite after Pyrrhotite with Sphalerite
Group of Pyrite crystals with deformed cubic habit, brilliant, pseudomorphing clearly hexagonal Pyrrhotite crystals and partially covered by twinned Sphalerite crystals.
Stan Trg (Stan Terg, Stari Trg) Mine, Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District  Kosovo (2018)
Specimen size: 17.4 × 11.2 × 7.5 cm = 6.85” × 4.41” × 2.95”
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MJ7Y9: Pyrite after Pyrrhotite with Sphalerite and Quartz
Crystalline botryoidal Pyrite growths that are very bright with intense iridescence. The Pyrite has completely replaced flat, hexagonal shaped, crystals of a pre-existing Pyrrhotite. They are on matrix with black Sphalerite crystals (variety marmatite) and with Quartz crystals. A high quality pseudomorph.
Cavnic mining area, Cavnic, Maramures  Romania (2000)
Specimen size: 8.5 × 8.3 × 4 cm = 3.35” × 3.27” × 1.57”

Main crystal size: 2 × 1.6 cm = 0.79” × 0.63”
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MFR96AN9: Pyrite after Pyrrhotite with Sphalerite, Calcite and Boulangerite
Very aerial group of platy Pyrite pseudomorphs after Pyrrhotite crystals, with coatings of twinned Sphalerite crystals, Calcite, and acicular aggregates of Boulangerite.
Stan Trg (Stan Terg, Stari Trg) Mine, Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District  Kosovo (05/2021)
Specimen size: 13.3 × 4.6 × 2.8 cm = 5.24” × 1.81” × 1.10”
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18EB74: Pyrite after Pyrrhotite, Sphalerite
Group of divergent crystals with the hexagonal outline of Pyrrhotite, totally pseudomorphed by Pyrite, with a second generation of smaller brighter crystals, and a multitude of scattered small cream-colored crystals of Dolomite. A cascade of very sharp Sphalerite crystals (marmatite variety), with very well defined spinel-law twin planes, intense black and very lustrous, completes the piece, along with small traces of Pyrite with a markedly golden color. The old Herja mine, where this piece comes from, processed metals such as antimony, lead, silver and zinc.
Herja Mine, Chiuzbaia, Baia Sprie, Maramures  Romania (1964)
Specimen size: 7.5 × 4.7 × 4.0 cm = 2.95” × 1.85” × 1.57”
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TG16H5: Pyrite and Chalcopyrite with Calcite
Calcite covering another mineral (probably a first generation of Calcite) and on a matrix of complex crystals of Pyrite and twinned crystals of Chalcopyrite. Locality is very unusual and samples from this locality are very scarce.
Toroioaga Mine, Baia Borsa, Maramures  Romania (±1980)
Specimen size: 11.4 × 11 × 5.8 cm = 4.49” × 4.33” × 2.28”
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TT47AG9: Pyrite and Quartz
A crown of small cubic Pyrite crystals that are bright and are covering a spheroidal mass that sits on a cluster of Quartz crystals.
Boldut Mine, Cavnic mining area, Cavnic, Maramures  Romania
Specimen size: 9.5 × 7.5 × 6.3 cm = 3.74” × 2.95” × 2.48”
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TLR47AO4: Pyrite and Sphalerite with Calcite
Nest of Pyrite crystals with the dominant forms of the pentadodecahedron, very shiny, with twinned Sphalerite crystals and bordered by white translucent lenticular Calcite crystals.
Stan Trg (Stan Terg, Stari Trg) Mine, Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District  Kosovo (2000-2021)
Specimen size: 8.2 × 7.8 × 4.3 cm = 3.23” × 3.07” × 1.69”

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