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NW27AM8: Siderite with Quartz
Group of transparent Quartz crystals partially covered by tabular Siderite crystals, with a light cream color and high quality.
Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1999)
Specimen size: 10.5 × 6.8 × 4.6 cm = 4.13” × 2.68” × 1.81”
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EY47AG7: Siderite with Quartz
Elongated and floater rhombohedral Siderite crystal. It is translucent, bright and partially coated by small clear Quartz crystals.
The sample, very typical of its classic French locality, is from the Christophe Marot collection (cat. nr. C7-2), whose label we’ll send to the buyer.
Saint-Pierre-de-Mésage, Vizille, Grenoble, Isère, Auvergne-Rhône-Alpes  France
Specimen size: 5.2 × 4.3 × 2.2 cm = 2.05” × 1.69” × 0.87”
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ETB87AO0: Siderite with Quartz
Lenticular and very flattened crystals of Siderite, with the typical curvatures and undulations seen in specimens from this deposit, with good luster and a very light and uniform brown color. On matrix, with Quartz crystals. An excellent French classic.
La Mure coal mines, La Mure, Matheysine-Trièves, Grenoble, Isère, Auvergne-Rhône-Alpes  France
Specimen size: 12.4 × 6.1 × 2.5 cm = 4.88” × 2.40” × 0.98”
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SR58AC7: Siderite with Quartz
Aggregate of very sharp and well defined rhombohedral crystals with echeloned edges. They are very bright, have a clear brown color and are on matrix, with very well defined Quartz crystals. As is the case with so many specimens in this collection, in this case a German classic, the sample is of great quality for the locality.
Neudorf, Harzgerode mining district, Harz, Saxony-Anhalt/Sachsen-Anhalt  Germany
Specimen size: 11.2 × 8 × 4.8 cm = 4.41” × 3.15” × 1.89”

Main crystal size: 2 × 1.2 cm = 0.79” × 0.47”
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NB89AL3: Siderite with Quartz
Powerful group of Quartz crystals displaying a dipyramidal habit, as the prism is mostly absent, covered by an epigenetic growth of small Siderite crystals. The size of the Quartz crystals and the quality of the piece is much higher than what is usually found in this deposit.
The specimen comes from the Miguel David Martínez collection, whose label we will send to the buyer along with a small poster that certifies that this specimen was displayed in the “Minerals of the Mediterranian 2014” exhibition at the 2014 Expominer Show.
San Valentín open pit, Sancti Espíritu, Sierra Minera de Cartagena-La Unión, La Unión, Comarca Campo de Cartagena, Region of Murcia (Murcia)  Spain (±1990)
Specimen size: 14.7 × 9.3 × 5.5 cm = 5.79” × 3.66” × 2.17”
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LM94AK4: Siderite with Quartz
Group of flattened lenticular crystals of Siderite, translucent, bright and of uniform brown color, on matrix, with small water-clear crystals of Quartz. An excellent French classic from the Philippe Morelon collection (No. 362), whose label we will send to the buyer.
La Mure coal mines, La Mure, Matheysine-Trièves, Grenoble, Isère, Auvergne-Rhône-Alpes  France (±1994)
Specimen size: 18.4 × 7.2 × 4.4 cm = 7.24” × 2.83” × 1.73”

Main crystal size: 3.5 × 2.4 cm = 1.38” × 0.94”
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EF86R3: Siderite with Quartz
Aggregate of very sharp simple and transparent rhombohedral crystals with a rich color, very bright for the species. Selectively coated by groups of clear crystals of Quartz. A nice classic.
Allevard, Haut-Grésivaudan, Grenoble, Isère, Auvergne-Rhône-Alpes  France
Specimen size: 5.2 × 3.7 × 3.8 cm = 2.05” × 1.46” × 1.50”
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N7CK0: Siderite with Quartz
Crystal of tabular habit partially covered by small Pyrite crystals. The base is a group of Quartz crystals.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1997)
Specimen size: 5.8 × 5.1 × 6.2 cm = 2.28” × 2.01” × 2.44”

Main crystal size: 4.1 × 3.5 cm = 1.61” × 1.38”
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RD60M0: Siderite with Quartz
Lenticular Siderite crystals with a marked color zoning darker in the center and light-colored towards the edges. On a Quartz matrix.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal
Specimen size: 4.9 × 4.2 × 2.4 cm = 1.93” × 1.65” × 0.94”
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N14CK9: Siderite with Quartz
Barrel-shaped crystals of Siderite on a group of Quartz crystals and small crystals of Arsenopyrite and Pyrite.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1997)
Specimen size: 7.2 × 6.4 × 5.2 cm = 2.83” × 2.52” × 2.05”

Main crystal size: 1.6 × 1.2 cm = 0.63” × 0.47”
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NC64G8: Siderite with Quartz
An encrustation of little crystals of Siderite covers the rhombohedral terminal faces of a Quartz prism. Two of the crystals have a big size enhancing from the group.
Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (2004)
Specimen size: 11.1 × 6.2 × 5 cm = 4.37” × 2.44” × 1.97”
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ST37AB6: Siderite with Quartz
Aggregates of thick lenticular crystals with very well defined faces and edges, bright with a very deep brown color and on matrix, with thin white Quartz veins. An excellent English classic. As is the case with so many specimens in this collection, the sample is of great quality for the locality.
Tincroft Mine, Carn Brea and Tincroft United Mines, Carn Brea, Camborne - Redruth - Saint Day District, Cornwall  England / United Kingdom
Specimen size: 7 × 4.8 × 5 cm = 2.76” × 1.89” × 1.97”

Main crystal size: 0.7 × 0.6 cm = 0.28” × 0.24”
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TP26AI7: Siderite with Quartz (variety amethyst)
Coatings of rhombohedral Siderite microcrystals that are very bright and have a deep yellowish color with golden reflections. They are are on a group of Quartz (amethyst variety) crystals with a very pale color. The sample is from the collection of La Unión area minerals of Alain Martaud whose label we’ll send to the buyer.
San Valentín open pit, Sancti Espíritu, Sierra Minera de Cartagena-La Unión, La Unión, Comarca Campo de Cartagena, Region of Murcia (Murcia)  Spain (1980-1985)
Specimen size: 6.1 × 5.1 × 3 cm = 2.40” × 2.01” × 1.18”
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NY13AB1: Siderite with Quartz and Arsenopyrite
Aggregate of prismatic Siderite crystals with pinacoidal terminations. They have a very uniform dark brown color and silky luster due to microcrystalline surfaces on the prisms. The Siderite is with a small matrix of Quartz and Arsenopyrite and has cubic Pyrite microcrystals on its faces. Unlike most Panasqueira Siderite, this sample lacks the typically dull creamy second generation, which makes it very showy.
Minas da Panasqueira, level 0, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (11/2014)
Specimen size: 4.3 × 3.3 × 2 cm = 1.69” × 1.30” × 0.79”

Main crystal size: 2.5 × 2 cm = 0.98” × 0.79”
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NM16F4: Siderite with Quartz and Arsenopyrite
The Siderite has formed an intensely colored, rose-like spray of crystals, which cover the Quartz. On these lenticular crystals there are some crystals of Arsenopyrite.
Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (2004)
Specimen size: 10.7 × 7 × 8.5 cm = 4.21” × 2.76” × 3.35”
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ED89Y9: Siderite with Quartz and Baryte
Aggregates of very flattened lenticular Siderite crystals on a matrix of Quartz crystals with very sharp white rhombohedral Calcite crystals and a Baryte crystal with very well defined faces and edges, a very rare species at Le Mure.
La Mure coal mines, La Mure, Matheysine-Trièves, Grenoble, Isère, Auvergne-Rhône-Alpes  France
Specimen size: 12.7 × 12.5 × 4 cm = 5.00” × 4.92” × 1.57”

Main crystal size: 1.7 × 0.9 cm = 0.67” × 0.35”

TC280NCG: Siderite with Quartz and Calcite
Siderite crystal with a lenticular shape, with bright luster and light brown color, attached to a Quartz crystal and covered by small Calcite crystals.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±2004)
Specimen size: 8 × 4.7 × 4.6 cm = 3.15” × 1.85” × 1.81”
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SV2150TBY: Siderite with Quartz and Chalcopyrite
Aesthetic specimen formed by sharp lenticular crystals of zoned brown Siderite, randomly arranged on a rock matrix totally carpeted by snow-white Quartz crystals offering a nice contrast of colors. Several brightly colored Chalcopyrite crystals, golden and very shiny, adorn the piece. The specimen comes from the former collection of Robert-Auguste Touchon and, most surprisingly, was found in the area of some coal mines, west of La Mure, which were closed in 1997.
Le Villaret pit, Susville, Matheysine-Trièves, Grenoble, Isère, Auvergne-Rhône-Alpes  France
Specimen size: 11.7 × 4.9 × 4.8 cm = 4.61” × 1.93” × 1.89”

Main crystal size: 1.4 × 1 cm = 0.55” × 0.39”
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N12TK0: Siderite with Quartz and Fluorapatite
Group of first generation crystals, so they are translucent and have an excellent color and luster. On the Siderite there is a small group of tabular Fluorapatite crystals and Quartz crystals. This type of first generation Siderite is very uncommon at Panasqueira.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1995)
Specimen size: 6.6 × 4.4 × 2.1 cm = 2.60” × 1.73” × 0.83”
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E12EK9: Siderite with Quartz and inclusions
Flattened rhombohedral Siderite crystal group, covering Quartz and small crystals of Arsenopyrite and Pyrite some of them included on the Quartz.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1997)
Specimen size: 11.8 × 8.6 × 5.5 cm = 4.65” × 3.39” × 2.17”

Main crystal size: 1.7 × 1.6 cm = 0.67” × 0.63”
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JFD229AP9: Siderite with Quartz and Pyrite
A very clear and perfect Quartz, with a very showy phantom, clearly displaying the different phases of crystal growth. The Siderite, very sharp and aerial, and with small Pyrite crystals adds its signature to the piece.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1993)
Specimen size: 5.8 × 4.7 × 5 cm = 2.28” × 1.85” × 1.97”
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ND16G4: Siderite with Quartz and Pyrite
Rhombohedrons are very defined and its rough surface is a product of re-crystallization of the same Siderite. Crystals are aerial on a matrix of Quartz crystals with little crystallizations of Pyrite.
Turt Mine, Turt, Negresti-Oas, Oas Mountains, Satu Mare  Romania (2003)
Specimen size: 8.5 × 5.8 × 3.9 cm = 3.35” × 2.28” × 1.54”

Main crystal size: 3.6 × 2.9 cm = 1.42” × 1.14”
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EXB67AP1: Siderite with Quartz with Ferberite inclusions
Very aerial group of lenticular Siderite crystals of considerable size, one of them clearly dominant and very aerial, light cream in color and implanted on a crystal of Quartz with inclusions of small Ferberite crystals.
Minas da Panasqueira, levels 0-1, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (2021)
Specimen size: 12.7 × 7.4 × 5.4 cm = 5.00” × 2.91” × 2.13”
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NC76AB5: Siderite with Quartz, Chalcopyrite and Muscovite
Aggregate of lenticular Siderite crystals, one of them clearly dominant, with very well defined faces and edges and on a crystalline Quartz matrix with leafy Muscovite aggregates and a very well defined Chalcopyrite crystal.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (2004)
Specimen size: 11.4 × 5.5 × 3.2 cm = 4.49” × 2.17” × 1.26”

Main crystal size: 5.6 × 4.6 cm = 2.20” × 1.81”
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NA59AM8: Siderite with Quartz, Fluorapatite and Dravite-Schorl
Group of very sharp lenticular crystals of Siderite with polycrystalline growths, with good luster and a light cream color. On matrix, with crystals of Fluorapatite, Quartz and small acicular crystals of Dravite-Schorl. Very original and with a higher quality than usual in this locality.
Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1998)
Specimen size: 7.7 × 4.1 × 6 cm = 3.03” × 1.61” × 2.36”

12689 results found. [1-25] [26-50] [51-75] [76-100] [101-125] [126-150] [151-175] [176-200] [201-225] [226-250] [251-275] [276-300] [301-325] [326-350] [351-375] [376-400] [401-425] [426-450] [451-475] [476-500] [501-525] [526-550] [551-575] [576-600] [601-625] [626-650] [651-675] [676-700] [701-725] [726-750] [751-775] [776-800] [801-825] [826-850] [851-875] [876-900] [901-925] [926-950] [951-975] [976-1000] [1001-1025] [1026-1050] [1051-1075] [1076-1100] [1101-1125] [1126-1150] [1151-1175] [1176-1200] [1201-1225] [1226-1250] [1251-1275] [1276-1300] [1301-1325] [1326-1350] [1351-1375] [1376-1400] [1401-1425] [1426-1450] [1451-1475] [1476-1500] [1501-1525] [1526-1550] [1551-1575] [1576-1600] [1601-1625] [1626-1650] [1651-1675] [1676-1700] [1701-1725] [1726-1750] [1751-1775] [1776-1800] [1801-1825] [1826-1850] [1851-1875] [1876-1900] [1901-1925] [1926-1950] [1951-1975] [1976-2000] [2001-2025] [2026-2050] [2051-2075] [2076-2100] [2101-2125] [2126-2150] [2151-2175] [2176-2200] [2201-2225] [2226-2250] [2251-2275] [2276-2300] [2301-2325] [2326-2350] [2351-2375] [2376-2400] [2401-2425] [2426-2450] [2451-2475] [2476-2500] [2501-2525] [2526-2550] [2551-2575] [2576-2600] [2601-2625] [2626-2650] [2651-2675] [2676-2700] [2701-2725] [2726-2750] [2751-2775] [2776-2800] [2801-2825] [2826-2850] [2851-2875] [2876-2900] [2901-2925] [2926-2950] [2951-2975] [2976-3000] [3001-3025] [3026-3050] [3051-3075] [3076-3100] [3101-3125] [3126-3150] [3151-3175] [3176-3200] [3201-3225] [3226-3250] [3251-3275] [3276-3300] [3301-3325] [3326-3350] [3351-3375] [3376-3400] [3401-3425] [3426-3450] [3451-3475] [3476-3500] [3501-3525] [3526-3550] [3551-3575] [3576-3600] [3601-3625] [3626-3650] [3651-3675] [3676-3700] [3701-3725] [3726-3750] [3751-3775] [3776-3800] [3801-3825] [3826-3850] [3851-3875] [3876-3900] [3901-3925] [3926-3950] [3951-3975] [3976-4000] [4001-4025] [4026-4050] [4051-4075] [4076-4100] [4101-4125] [4126-4150] [4151-4175] [4176-4200] [4201-4225] [4226-4250] [4251-4275] [4276-4300] [4301-4325] [4326-4350] [4351-4375] [4376-4400] [4401-4425] [4426-4450] [4451-4475] [4476-4500] [4501-4525] [4526-4550] [4551-4575] [4576-4600] [4601-4625] [4626-4650] [4651-4675] [4676-4700] [4701-4725] [4726-4750] [4751-4775] [4776-4800] [4801-4825] [4826-4850] [4851-4875] [4876-4900] [4901-4925] [4926-4950] [4951-4975] [4976-5000] [5001-5025] [5026-5050] [5051-5075] [5076-5100] [5101-5125] [5126-5150] [5151-5175] [5176-5200] [5201-5225] [5226-5250] [5251-5275] [5276-5300] [5301-5325] [5326-5350] [5351-5375] [5376-5400] [5401-5425] [5426-5450] [5451-5475] [5476-5500] [5501-5525] [5526-5550] [5551-5575] [5576-5600] [5601-5625] [5626-5650] [5651-5675] [5676-5700] [5701-5725] [5726-5750] [5751-5775] [5776-5800] [5801-5825] [5826-5850] [5851-5875] [5876-5900] [5901-5925] [5926-5950] [5951-5975] [5976-6000] [6001-6025] [6026-6050] [6051-6075] [6076-6100] [6101-6125] [6126-6150] [6151-6175] [6176-6200] [6201-6225] [6226-6250] [6251-6275] [6276-6300] [6301-6325] [6326-6350] [6351-6375] [6376-6400] [6401-6425] [6426-6450] [6451-6475] [6476-6500] [6501-6525] [6526-6550] [6551-6575] [6576-6600] [6601-6625] [6626-6650] [6651-6675] [6676-6700] [6701-6725] [6726-6750] [6751-6775] [6776-6800] [6801-6825] [6826-6850] [6851-6875] [6876-6900] [6901-6925] [6926-6950] [6951-6975] [6976-7000] [7001-7025] [7026-7050] [7051-7075] [7076-7100] [7101-7125] [7126-7150] [7151-7175] [7176-7200] [7201-7225] [7226-7250] [7251-7275] [7276-7300] [7301-7325] [7326-7350] [7351-7375] [7376-7400] [7401-7425] [7426-7450] [7451-7475] [7476-7500] [7501-7525] [7526-7550] [7551-7575] [7576-7600] [7601-7625] [7626-7650] [7651-7675] [7676-7700] [7701-7725] [7726-7750] [7751-7775] [7776-7800] [7801-7825] [7826-7850] [7851-7875] [7876-7900] [7901-7925] [7926-7950] [7951-7975] [7976-8000] [8001-8025] [8026-8050] [8051-8075] [8076-8100] [8101-8125] [8126-8150] [8151-8175] [8176-8200] [8201-8225] [8226-8250] [8251-8275] [8276-8300] [8301-8325] [8326-8350] [8351-8375] [8376-8400] [8401-8425] [8426-8450] [8451-8475] [8476-8500] [8501-8525] [8526-8550] [8551-8575] [8576-8600] [8601-8625] [8626-8650] [8651-8675] [8676-8700] [8701-8725] [8726-8750] [8751-8775] [8776-8800] [8801-8825] [8826-8850] [8851-8875] [8876-8900] [8901-8925] [8926-8950] [8951-8975] [8976-9000] [9001-9025] [9026-9050] [9051-9075] [9076-9100] [9101-9125] [9126-9150] [9151-9175] [9176-9200] [9201-9225] [9226-9250] [9251-9275] [9276-9300] [9301-9325] [9326-9350] [9351-9375] [9376-9400] [9401-9425] [9426-9450] [9451-9475] [9476-9500] [9501-9525] [9526-9550] [9551-9575] [9576-9600] [9601-9625] [9626-9650] [9651-9675] [9676-9700] [9701-9725] [9726-9750] [9751-9775] [9776-9800] [9801-9825] [9826-9850] [9851-9875] [9876-9900] [9901-9925] [9926-9950] [9951-9975] [9976-10000] [10001-10025] [10026-10050] [10051-10075] [10076-10100] [10101-10125] [10126-10150] [10151-10175] [10176-10200] [10201-10225] [10226-10250] [10251-10275] [10276-10300] [10301-10325] [10326-10350] [10351-10375] [10376-10400] [10401-10425] [10426-10450] [10451-10475] [10476-10500] [10501-10525] [10526-10550] [10551-10575] [10576-10600] [10601-10625] [10626-10650] [10651-10675] [10676-10700] [10701-10725] [10726-10750] [10751-10775] [10776-10800] [10801-10825] [10826-10850] [10851-10875] [10876-10900] [10901-10925] [10926-10950] [10951-10975] [10976-11000] [11001-11025] [11026-11050] [11051-11075] [11076-11100] [11101-11125] [11126-11150] [11151-11175] [11176-11200] [11201-11225] [11226-11250] [11251-11275] [11276-11300] [11301-11325] [11326-11350] [11351-11375] [11376-11400] [11401-11425] [11426-11450] [11451-11475] [11476-11500] [11501-11525] [11526-11550] [11551-11575] [11576-11600] [11601-11625] [11626-11650] [11651-11675] [11676-11700] [11701-11725] [11726-11750] [11751-11775] [11776-11800] [11801-11825] [11826-11850] [11851-11875] [11876-11900] [11901-11925] [11926-11950] [11951-11975] [11976-12000] [12001-12025] [12026-12050] [12051-12075] [12076-12100] [12101-12125] [12126-12150] [12151-12175] [12176-12200] [12201-12225] [12226-12250] 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Best Specimens		 The Folch Collection
The Folch
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