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Pyrite.
JFD75AO0: Pyrite
When I bought this very unusual piece I had many illusions because of its alleged rarity and, as often happens, analyses demolished my illusions. It's a Pyrite, just Pyrite, but it's weird as hell, right?
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1988)
Specimen size: 7.1 × 3.9 × 3.7 cm = 2.80” × 1.54” × 1.46”

Price: €230 / US$235 / ¥31330 / AUD$330
Pyrite.
EDX48AO0: Pyrite
Spheroidal nodules of Pyrite crystals with the dominant faces of the octahedron, very shiny, included in a carbonaceous matrix.
State Bridge area, Rocky Mountain, Eagle County, Colorado  USA
Specimen size: 7.6 × 6.3 × 4.4 cm = 2.99” × 2.48” × 1.73”

Main crystal size: 2.9 × 2.3 cm = 1.14” × 0.91”

Price: €320 / US$327 / ¥43590 / AUD$470
Pyrite.
TF59AC9: Pyrite
Aggregate of very bright Pyrite crystals with dominant cube faces but very rich in other forms and with very well defined growth striations.
Huanzala Mine, Huallanca District, Dos de Mayo Province, Huánuco Department  Peru (08/2014)
Specimen size: 9.2 × 8.1 × 3.5 cm = 3.62” × 3.19” × 1.38”

Price: €390 / US$399 / ¥53120 / AUD$570
Pyrite.
CK36D3: Pyrite
Colored Pyrite with curved cubes covering a flat Calcite matrix.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal
Specimen size: 12 × 10 × 1.3 cm = 4.72” × 3.94” × 0.51”

Main crystal size: 1 × 0.9 cm = 0.39” × 0.35”

Price: €135 / US$138 / ¥18380 / AUD$190
Pyrite (octahedral).
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”

Price: €120 / US$122 / ¥16340 / AUD$170
Pyrite after Pyrrhotite and with Sphalerite.
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 (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”

Main crystal size: 0.9 × 0.7 cm = 0.35” × 0.28”

Price: €140 / US$143 / ¥19070 / AUD$200
Pyrite after Pyrrhotite with Calcite.
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 (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”

Price: €160 / US$163 / ¥21790 / AUD$230
Pyrite after Pyrrhotite with Galena and Calcite.
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 (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”

Price: €230 / US$235 / ¥31330 / AUD$330
Pyrite after Pyrrhotite with Galena, Arsenopyrite, Sphalerite and Chalcopyrite.
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 (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”

Price: €160 / US$163 / ¥21790 / AUD$230
Pyrite after Pyrrhotite with Galena, Calcite, Quartz and Dolomite.
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”

Price: €480 / US$491 / ¥65380 / AUD$700
Pyrite after Pyrrhotite with Sphalerite.
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 (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”

Price: €580 / US$593 / ¥79000 / AUD$850
Pyrite after Pyrrhotite, Sphalerite.
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”

Price: €95 / US$97 / ¥12940 / AUD$130
Pyrite and Sphalerite with Calcite.
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 (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”

Price: €220 / US$225 / ¥29960 / AUD$320
Pyrite epitactic Marcasite.
TC50DA: Pyrite epitactic Marcasite
Polycrystalline growths of cubic Pyrite crystals that have grown epitactically coating sharp pre-existing Marcasite crystals. It comes from the renowned Silvane collection (Josep Amigó).
Taxco de Alarcón, Municipio Taxco, Guerrero  Mexico
Specimen size: 4.7 × 4.8 × 4.8 cm = 1.85” × 1.89” × 1.89”

Main crystal size: 1 × 0.6 cm = 0.39” × 0.24”

Price: €50 / US$51 / ¥6810 / AUD$70
Pyrite perimorphic of Baryte.
16MHL13: Pyrite perimorphic of Baryte
A novelty from Morocco, from a discovery in the summer of 2020. White tabular crystals of Baryte partially covered by a perimorphic growth of a mosaic of very lustrous small cubic and octahedral Pyrite crystals. The Bou Nahas Mine, a polymetallic hydrothermal deposit, continues to provide pleasant mineral surprises.
Bou Nahas Mine, Oumjrane mining area, Alnif Commune, Tinghir Province, Drâa-Tafilalet Region  Morocco (07/2020)
Specimen size: 3.6 × 3.6 × 2.3 cm = 1.42” × 1.42” × 0.91”

Price: €45 / US$46 / ¥6120 / AUD$60
Pyrite perimorphic of Baryte.
16MJM11: Pyrite perimorphic of Baryte
A novelty from Morocco, from a discovery in the summer of 2020. White tabular crystals of Baryte partially covered by a perimorphic growth of a mosaic of very lustrous small cubic and octahedral Pyrite crystals. The Bou Nahas Mine, a polymetallic hydrothermal deposit, continues to provide pleasant mineral surprises.
Bou Nahas Mine, Oumjrane mining area, Alnif Commune, Tinghir Province, Drâa-Tafilalet Region  Morocco (07/2020)
Specimen size: 4.6 × 3.0 × 1.6 cm = 1.81” × 1.18” × 0.63”

Main crystal size: 2.5 × 2.0 cm = 0.98” × 0.79”

Price: €65 / US$66 / ¥8850 / AUD$90
Pyrite perimorphic of Baryte.
MMA11AN8: Pyrite perimorphic of Baryte
A novelty from Morocco, from a discovery in the summer of 2020. White tabular crystals of Baryte partially covered by a perimorphic growth of a mosaic of small, very bright, cubic and octahedral Pyrite crystals.
Bou Nahas Mine, Oumjrane mining area, Alnif Commune, Tinghir Province, Drâa-Tafilalet Region  Morocco (07/2020)
Specimen size: 4.5 × 3.4 × 2.5 cm = 1.77” × 1.34” × 0.98”

Price: €80 / US$81 / ¥10890 / AUD$110
Pyrite perimorphic of Baryte.
MLM28AN8: Pyrite perimorphic of Baryte
A novelty from Morocco, from a discovery in the summer of 2020. White parallel and tabular Baryte crystals covered by a perimorphic growth of a mosaic of small, very bright, cubic and octahedral Pyrite crystals. On the back of the piece (see video) the almost total dissolution of the original Baryte crystals can be seen.
Bou Nahas Mine, Oumjrane mining area, Alnif Commune, Tinghir Province, Drâa-Tafilalet Region  Morocco (07/2020)
Specimen size: 9.1 × 6 × 6.3 cm = 3.58” × 2.36” × 2.48”

Main crystal size: 4.5 × 3.8 cm = 1.77” × 1.50”

Price: €320 / US$327 / ¥43590 / AUD$470
Pyrite perimorphic of Baryte.
MJK68AN8: Pyrite perimorphic of Baryte
A novelty from Morocco, from a discovery in the summer of 2020. White parallel and tabular Baryte crystals covered by a perimorphic growth of a mosaic of small, very bright, cubic and octahedral Pyrite crystals. On the back of the piece (see video) the almost total dissolution of the original Baryte crystals can be seen.
Bou Nahas Mine, Oumjrane mining area, Alnif Commune, Tinghir Province, Drâa-Tafilalet Region  Morocco (07/2020)
Specimen size: 12.2 × 7.5 × 4.5 cm = 4.80” × 2.95” × 1.77”

Price: €380 / US$388 / ¥51760 / AUD$550
Pyrite perimorphic of Baryte with Quartz.
MCX96AN8: Pyrite perimorphic of Baryte with Quartz
A novelty from Morocco, from a discovery in the summer of 2020. Polycrystalline growth of a mosaic of perimorphic Pyrite crystals with bright luster, on a tabular Baryte crystal, on a matrix of white Quartz crystals partially covered by Pyrite.
Bou Nahas Mine, Oumjrane mining area, Alnif Commune, Tinghir Province, Drâa-Tafilalet Region  Morocco (07/2020)
Specimen size: 7.6 × 6.4 × 4.3 cm = 2.99” × 2.52” × 1.69”

Main crystal size: 3.5 × 3 cm = 1.38” × 1.18”

Price: €220 / US$225 / ¥29960 / AUD$320
Pyrite with Arsenopyrite, Boulangerite inclusions and Quartz.
TPB56AO4: Pyrite with Arsenopyrite, Boulangerite inclusions and Quartz
Nest of very shiny Pyrite crystals, outlined by globular Calcite growths with Boulangerite inclusions, on matrix. With Quartz, and very sharp crystals of Arsenopyrite.
Stan Trg (Stari Trg) Mine, Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District  Kosovo (2000-2021)
Specimen size: 6.8 × 5.9 × 3.2 cm = 2.68” × 2.32” × 1.26”

Price: €150 / US$153 / ¥20430 / AUD$220
Pyrite with Baryte and Siderite.
EG14AL7: Pyrite with Baryte and Siderite
Cubic Pyrite crystals with curious stepped projections on the edges, on a group of outstanding tabular Baryte crystals partially covered with small white Siderite crystals with the so-called “saddle” habit.
Rivet Quarry, Peyrebrune area, Montredon-Labessonnié, Le Haut Dadou, Castres, Tarn, Occitanie  France (11/2018)
Specimen size: 4.2 × 3.6 × 2.6 cm = 1.65” × 1.42” × 1.02”

Main crystal size: 0.6 × 0.5 cm = 0.24” × 0.20”

Price: €85 / US$86 / ¥11570 / AUD$120
Pyrite with Calcite.
TB66AG3: Pyrite with Calcite
Groups of octahedral Pyrite crystals with minor cube faces. They are very well defined and bright and are on a rocky matrix coated by small, very acute, scalenohedral Calcite crystals, transparent and bright. The sample is from a not well known Iowa mine.
Pint's Quarry, Raymond, Black Hawk County, Iowa  USA
Specimen size: 7.5 × 6.5 × 4.3 cm = 2.95” × 2.56” × 1.69”

Price: €160 / US$163 / ¥21790 / AUD$230
Pyrite with Calcite.
TXA86AO5: Pyrite with Calcite
Group of very sharp and extraordinarily shiny Pyrite crystals, with coatings of lenticular rhombohedral Calcite crystals, translucent, lustrous, and white in color with geometric zoning on the edges.
Stan Trg (Stari Trg) Mine, Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District  Kosovo (2000-2011)
Specimen size: 7.6 × 5.4 × 4.3 cm = 2.99” × 2.13” × 1.69”

Main crystal size: 2.6 × 1.7 cm = 1.02” × 0.67”

Price: €170 / US$173 / ¥23150 / AUD$250
Pyrite with Calcite.
NC27AL9: Pyrite with Calcite
Polycrystalline aggregates of hexahedral Pyrite crystals, with good luster and curious color variations, ranging from greenish yellow to brassy. An unusually aesthetic specimen from a very recent find in Panasqueira.
Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (07-08/2020)
Specimen size: 9.6 × 6.4 × 3.5 cm = 3.78” × 2.52” × 1.38”

Price: €190 / US$194 / ¥25880 / AUD$270

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