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TA67L3: Cassiterite
Group of translucent Cassiterite twinned crystals, with more than an excellent luster and dark honey color. With Quartz crystals on matrix.
Viloco Mine, Loayza Province, La Paz Department  Bolivia (01/2008)
Specimen size: 7 × 5.6 × 2.9 cm = 2.76” × 2.20” × 1.14”
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GB67P9: Cassiterite
One of the best samples that we can remember from the locality due to its crystals which are very much larger than usual. Faces and edges are very well defined, the twin is evident but slightly marked, and are translucent, having a very deep color.
Aberfoyle Mine (Rossarden Tin Mine), Rossarden District, Tasmania  Australia (±1980)
Specimen size: 5.8 × 2.8 × 2.5 cm = 2.28” × 1.10” × 0.98”

Main crystal size: 3 × 2 cm = 1.18” × 0.79”
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FY53: Cassiterite
Gem single crystal of Cassiterite, complete in all sides (but with a contact on its back) pretty sharp and huge.
Viloco Mine, Loayza, La Paz  Bolivia
Specimen size: 3.6 × 3 × 2.8 cm = 1.42” × 1.18” × 1.10”
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TT50X5: Cassiterite with Beryl and Muscovite
Polycrystalline growths of Cassiterite with a very prominent twinning, very bright deep black color and with a small matrix of colorless beryl and leafy growths of Muscovite.
Pingwu Mine, Huya township, Mount Xuebaoding, Pingwu, Mianyang Prefecture, Sichuan Province  China (2012)
Specimen size: 6.5 × 5 × 3.5 cm = 2.56” × 1.97” × 1.38”
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22TBB06: Cassiterite (twinned)
Group of twinned Cassiterite crystals, one of them clearly dominant, with sharp crystal forms, with good luster, and with small remnants of matrix formed by grains of Quartz, something not very common in specimens from this classic French locality that has been worked since Roman times. It comes from the old collection of Robert-Auguste Touchon.
La Villeder, Le Roc-Saint-André, Vannes, Morbihan, Brittany/Bretagne  France (±1900)
Specimen size: 3.0 × 1.7 × 1.5 cm = 1.18” × 0.67” × 0.59”
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RX14W6: Cassiterite (twinned)
Group of twinned dipyramidal crystals that are very bright with yellowish brown reflections and transparencies and show fine horizontal striations. We especially note the size of the main crystal which is very big compared with most of the samples from Panasqueira.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal
Specimen size: 3.5 × 2.6 × 2 cm = 1.38” × 1.02” × 0.79”

Main crystal size: 2.6 × 2.3 cm = 1.02” × 0.91”
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CA12AI3: Cassiterite (variety 'wood tin')
Round mass of Cassisterite that is brownish yellow with stripes of darker color and very well defined concentric growth (the so called 'wood tin' variety). An old Mexican classic.
Encarnación de Díaz, Altos Norte Region, Jalisco  Mexico
Specimen size: 2.8 × 2.6 × 1.6 cm = 1.10” × 1.02” × 0.63”
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TYR64AO2: Cassiterite (variety 'wood tin')
Botryoidal Cassiterite aggregate, in the habit / variety known as 'wood tin', lustrous and deep black. We will ship the specimen in its original Perky box from the collection of Robert J. (Bob) Noble, which also contains the label.
Cóndor Iquiña plateau, Macha area, Chayanta Province, La Paz Department  Bolivia
Specimen size: 2.9 × 2.7 × 2.7 cm = 1.14” × 1.06” × 1.06”
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TBT48AO6: Cassiterite (variety 'wood tin')
Botryoidal and stalagmitic growths of Cassiterite in concentric bands ('wood tin' variety). It should be noted that it is on matrix, which is quite uncommon for this variety of Cassiterite.
Santín Mine, De las Fajas Hill, Santa Catarina, Guanajuato  Mexico
Specimen size: 6.2 × 4.3 × 2.4 cm = 2.44” × 1.69” × 0.94”

CMP87CD5: Cassiterite (variety wood tin)
Botryoidal aggregates of the “wood tin” variety of Cassiterite, with a bright yellow-orange color and concentric growths, as can be seen on the sides of the piece. This specimen comes from the collection of duplicates of Carles Curto (number 1967.12) whose digital catalogue entry and handwritten label we will send to the buyer.
Santa María del Oro, Municipio Charcas, San Luis Potosí  Mexico
Specimen size: 5.4 × 4.5 × 2 cm = 2.13” × 1.77” × 0.79”
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AE46D5: Cassiterite doubly terminated
Doubly terminated Cassiterite that is just as nice as the photo suggests. Well placed on a minor Mica-Quartz matrix and pretty gemmy.
Langcangjiang river area, Yunnan  China
Specimen size: 2.7 × 2.2 × 1.8 cm = 1.06” × 0.87” × 0.71”
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NB94AF5: Cassiterite on Ferberite
Single Cassiterite crystal with an unusual size for the locality. It forms a cyclic twin with very well defined faces and edges, and on the terminal faces is a parallel growth of Ferberite crystals. Exceptional for Panasqueira.
Minas da Panasqueira, levels 0-1, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (04/2017)
Specimen size: 4 × 2.7 × 2.7 cm = 1.57” × 1.06” × 1.06”

Main crystal size: 2.7 × 2.5 cm = 1.06” × 0.98”
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MQ47AH0: Cassiterite on Quartz
Twinned Cassiterite crystals with very well defined faces and edges, translucent, bright and with a brown color with reddish reflections. They are implanted on a group of Quartz crystals, some of them doubly terminated, with Pyrite and Muscovite. The sample is old, found more than twenty years ago.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal
Specimen size: 12.3 × 11 × 7 cm = 4.84” × 4.33” × 2.76”
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MH80F3: Cassiterite on Quartz
Classic locality for excellent Cassiterite. The very brilliant crystals have some degree of translucence and are lighter in color than is typical for the locality. They are on a matrix of Quartz.
There is also a label from the collection of Professor H. Siegmund of Vienna (number 337)
Cinovec/Zinnwald, Erzgebirge, Krusné Hory Mts., Ústí Region, Bohemia  Czech Republic
Specimen size: 8 × 4.7 × 1.8 cm = 3.15” × 1.85” × 0.71”

Main crystal size: 2 × 1.5 cm = 0.79” × 0.59”
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TD90C1: Cassiterite on Quartz
The crystal size and habit is bigger and better than usual for the regular Chinese Cassiterite material. But the real attraction is its transparency. Although it is not very visible due to the Quartz matrix, with the use of a strong light we can appreciate that the crystal is partially gemmy showing a clear brown rather funny phantom at its bottom left corner. Plus the contrast with the white Quartz matrix increase the beauty of the specimen.
Pingwu Mine, Huya township, Mount Xuebaoding, Pingwu, Mianyang Prefecture, Sichuan Province  China (1998)
Specimen size: 5.5 × 4.3 × 2.4 cm = 2.17” × 1.69” × 0.94”
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ND68AA7: Cassiterite with Arsenopyrite, Fluorapatite, Calcite and Muscovite
Isolated twinned Cassiterite crystals that are very well defined and with a considerable size for the locality. They are on an Arsenopyrite matrix with tabular Fluorapatite crystals and spheroidal Muscovite aggregates. The back side could be almost considered as a different sample because it is dominated by an aggregate of very bright Arsenopyrite crystals with an excellent development and partially coated by Muscovite.
Minas da Panasqueira, level 0, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (07/2014)
Specimen size: 6.5 × 5.8 × 3.6 cm = 2.56” × 2.28” × 1.42”

Main crystal size: 1.4 × 1.3 cm = 0.55” × 0.51”
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AA90N4: Cassiterite with Beryl
Group of black twinned crystals of excellent luster and very well defined forms. They are with small tabular crystals of Beryl.
Pingwu Mine, Huya township, Mount Xuebaoding, Pingwu, Mianyang Prefecture, Sichuan Province  China
Specimen size: 5.9 × 4.9 × 2.3 cm = 2.32” × 1.93” × 0.91”
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HM580NG: Cassiterite with Calcite, Arsenopyrite and Quartz
Very aerial group of Cassiterite crystals with cyclic twinning, sharp and brilliant faces and edges, on matrix and with white platy Calcite crystals, Arsenopyrite and Quartz.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (10/2017)
Specimen size: 5.2 × 3.8 × 2.1 cm = 2.05” × 1.50” × 0.83”

Main crystal size: 2.5 × 2.3 cm = 0.98” × 0.91”
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HM90DF: Cassiterite with Calcite, Quartz and Pyrite
Very aerial, multiply twinned sharp Cassiterite crystals, translucent and with good luster. On matrix, with Calcite, Quartz and small Pyrite crystals.
Former collection of Lluís Daunis
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal
Specimen size: 2.6 × 1.9 × 1.4 cm = 1.02” × 0.75” × 0.55”
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EH93AI8: Cassiterite with Feldspar and Muscovite
Twinned Cassiterite crystals with very well defined parallel growths. They are between transparent and translucent, very bright, have a dark brown color with golden reflections, and they are on matrix, with Muscovite and a white Albite crystal. Exceptional for the locality.
Merekski District, Bureya Massif, Khabarovsk Krai  Russia
Specimen size: 6.5 × 4.5 × 3.4 cm = 2.56” × 1.77” × 1.34”

Main crystal size: 1.7 × 1.5 cm = 0.67” × 0.59”
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NE60M7: Cassiterite with Fluorapatite, Siderite and Quartz
Very well defined twin on matrix with small crystals of Fluorapatite, Siderite and Quartz. The Cassiterite crystal has a contact on the back.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal
Specimen size: 1.7 × 1.3 × 1.2 cm = 0.67” × 0.51” × 0.47”
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EPG30AO0: Cassiterite with Fluorite, Arsenopyrite and Mica
Groups of Cassiterite crystals, twinned and with very sharp crystal forms, translucent, very lustrous and with a uniform dark brown color. On matrix, with blue Fluorite at the base, Arsenopyrite crystals, leafy Mica aggregates and a small purplish octahedral Fluorite crystal. The specimen comes from what is so far a little known locality. The crystallized blue Fluorite in the matrix has been analyzed and we will send a copy of the analysis to the buyer.
Yindu, Hexigten Banner (Kèshíkèténg Qí), Chifeng (Ulanhad), Inner Mongolia Autonomous Region  China (2021)
Specimen size: 6.5 × 5.9 × 3.3 cm = 2.56” × 2.32” × 1.30”

Main crystal size: 1.6 × 1.5 cm = 0.63” × 0.59”
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PZ37C9: Cassiterite with Mica
Black and white. But its luster, perfection and the nice soft white Mica give a great contrast... For me it is like a jewel with its unquestionable quality.
Pingwu Mine, Huya township, Mount Xuebaoding, Pingwu, Mianyang Prefecture, Sichuan Province  China (2002)
Specimen size: 5 × 4 × 3.5 cm = 1.97” × 1.57” × 1.38”
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AQ96D4: Cassiterite with Mica
The crystals are not that big but the luster in incredible! The Mica is also nice, and the Cassiterite crystal's form is excellent.
Pingwu Mine, Huya township, Mount Xuebaoding, Pingwu, Mianyang Prefecture, Sichuan Province  China (2002)
Specimen size: 8.7 × 7 × 3 cm = 3.43” × 2.76” × 1.18”

Main crystal size: 1.5 × 0.8 cm = 0.59” × 0.31”
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AV27M4: Cassiterite with Mica and Feldspar
Actually it is quite difficult to obtain Cassiterite specimens from this locality. Very sharp faces and edges, excellent brilliance and unusual transparency, and on matrix.
Merekski District, Bureya Massif, Khabarovsk Krai  Russia
Specimen size: 4.9 × 4.2 × 4.8 cm = 1.93” × 1.65” × 1.89”

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