Mineral specimens search results


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TA93AD0: Grandidierite with Quartz and Mica
A novelty at Tucson 2016. Single crystal on matrix, with a uniform bluish green color and with faces and edges very much better defined than usual for this species. Of an excellent quality for this rare silicate.
Grandidierite deposit, Tranomaro Commune, Tranomaro-Maromby area, Amboasary District, Anosy Region  Madagascar (05-12/2015)
Specimen size: 5.5 × 4 × 3.9 cm = 2.17” × 1.57” × 1.54”
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TF67AD0: Grandidierite with Quartz, Feldspar and Diopside
A novelty at Tucson 2016. An isolated crystal on matrix. It is translucent, bright, with a uniform and intense bluish-green color and with very well defined prismatic faces. Of an excellent quality for this rare silicate.
Grandidierite deposit, Tranomaro Commune, Tranomaro-Maromby area, Amboasary District, Anosy Region  Madagascar (05-12/2015)
Specimen size: 2.9 × 2.2 × 1.5 cm = 1.14” × 0.87” × 0.59”

Main crystal size: 2.3 × 1.5 cm = 0.91” × 0.59”
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TC69AD0: Grandidierite with Quartz, Feldspar and Diopside
A novelty at Tucson 2016. Parallel growth, on matrix, of translucent and very bright crystals with a uniform and intense bluish green color and with very well defined prismatic faces. Of an excellent quality for this rare silicate.
Grandidierite deposit, Tranomaro Commune, Tranomaro-Maromby area, Amboasary District, Anosy Region  Madagascar (05-12/2015)
Specimen size: 5.6 × 3.3 × 2.5 cm = 2.20” × 1.30” × 0.98”
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TE99AD0: Grandidierite with Quartz, Feldspar and Diopside
A novelty at Tucson 2016. Parallel growth, on matrix, of translucent and bright crystals with a uniform bluish green color and with very well defined prismatic faces. Of an excellent quality for this rare silicate.
Grandidierite deposit, Tranomaro Commune, Tranomaro-Maromby area, Amboasary District, Anosy Region  Madagascar (05-12/2015)
Specimen size: 3.6 × 3 × 2.1 cm = 1.42” × 1.18” × 0.83”

Main crystal size: 3 × 1.3 cm = 1.18” × 0.51”
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TG29AD0: Grandidierite with Quartz, Feldspar, Diopside and Mica
A novelty at Tucson 2016. An isolated crystal on matrix. It is translucent, bright, with a uniform and intense bluish-green color and with very well defined prismatic faces. Of an excellent quality for this rare silicate.
Grandidierite deposit, Tranomaro Commune, Tranomaro-Maromby area, Amboasary District, Anosy Region  Madagascar (05-12/2015)
Specimen size: 2.6 × 2.6 × 1.4 cm = 1.02” × 1.02” × 0.55”
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JAL26AP8: Graphite
Parallel columnar growth of Graphite with very well defined hexagonal contours, satin luster and with smooth terminations. The specimen comes from the collection of Andrés Jiménez Shelly, and was previously in that of Carlos Prieto Paramio.
Tres Hermanos Mine, Pilotuerto, Tineo, Comarca Costa Occidental, Principality of Asturias (Asturias)  Spain
Specimen size: 7.7 × 3.3 × 1.6 cm = 3.03” × 1.30” × 0.63”
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TX61AJ3: Graphite with Diopside
A novelty at Denver 2018. Isolated platy Graphite crystals, very large with a contour that is very well defined for the species and implanted on a Diopside matrix.
The specimen has been photographed and published in the magazine ‘Paragénesis’, number 01/2019, page 77
Rossie, St. Lawrence County, New York  USA (28/06/2018)
Specimen size: 4 × 3 × 2.7 cm = 1.57” × 1.18” × 1.06”
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1T13: Graphite with Flouro-edenite
Graphite as thin platy crystals, very lustrous and profiled, some with marked hexagonal contours, implanted in Calcite matrix and accompanied by greenish yellow aggregates of Flouro-edenite, a rare inosilicate of calcium, sodium, magnesium, aluminum and fluorine.
Rhein property, Amity, Town of Warwick, Orange County, New York  USA (2010)
Specimen size: 5.5 × 4.2 cm = 2.17” × 1.65”

Main crystal size: 0.8 × 0.5 cm = 0.31” × 0.20”
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10TQ6: Graphite, Meionite, Fluoro-edenite
Very lustrous and sharp lamellar Graphite crystals implanted on a Calcite matrix of calc-silicate origin, and associated with green Fluoro-edenite aggregates, a rare inosilicate of calcium, sodium, magnesium, aluminum, with fluorine, and with cream-colored Meionite masses on top of the Fluoro-edenite.
Rhein property, Amity, Town of Warwick, Orange County, New York  USA (2010)
Specimen size: 6.1 × 5.0 × 2.8 cm = 2.40” × 1.97” × 1.10”
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XM80PR: Gratonite
Group of Gratonite crystals, on matrix, with very well defined crystal forms and excellent terminations. An exquisite specimen from a practically extinct locality. A Spanish classic.
Atalaya cut, Rio Tinto Mines, Minas de Riotinto, Comarca Cuenca Minera, Huelva, Andalusia  Spain
Specimen size: 1.8 × 1.1 × 1 cm = 0.71” × 0.43” × 0.39”

Main crystal size: 0.2 × 0.1 cm = 0.08” × 0.04”
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SV3260TGH: Greifensteinite with Muscovite and Albite


A very rare species, Greifensteinite, which is a phosphate of calcium, iron, and beryllium, doesn't particularly stand out for its beauty. However, it has been fortunate to find excellent companionship as both Muscovite and Albite are pleasing and enhance the aesthetics of the less attractive Greifensteinite.
Xanda Mine, Virgem da Lapa, Vale do Jequitinhonha, Minas Gerais  Brazil
Specimen size: 9.2 × 8.4 × 5.8 cm = 3.62” × 3.31” × 2.28”
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TC190TC: Greifensteinite with Muscovite and Feldspar
Groups of small tabular crystals of Greifensteinite, a very rare calcium, iron and beryllium phosphate, with very well defined faces, translucent, with a color between brown and green, on a matrix of Muscovite and Feldspar crystals.
Xanda Mine, Virgem da Lapa, Vale do Jequitinhonha, Minas Gerais  Brazil
Specimen size: 5.8 × 5.3 × 4  cm = 2.28” × 2.09” × 1.57”
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SV3230THG: Greifensteinite wth Muscovite and Albite


A very rare species, Greifensteinite, which is a phosphate of calcium, iron, and beryllium, doesn't particularly stand out for its beauty. However, it has been fortunate to find excellent companionship as both Muscovite and Albite are pleasing and enhance the aesthetics of the less attractive Greifensteinite.
Xanda Mine, Virgem da Lapa, Vale do Jequitinhonha, Minas Gerais  Brazil
Specimen size: 8.7 × 7.4 × 4.9 cm = 3.43” × 2.91” × 1.93”
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TTV14AP4: Grossular
Complete floater rhombododecahedral crystal of Grossular, translucent and with an intense pink color. The specimen is from a very classic locality for the species, and comes to us via the Miguel David Martínez collection (number 781), whose label we will send to the buyer.
Sierra de las Cruces, Sierra Mojada mining district, Municipio Sierra Mojada, Coahuila (Coahuila de Zaragoza)  Mexico
Specimen size: 2.1 × 2.1 × 2.2 cm = 0.83” × 0.83” × 0.87”
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TJJ47AQ1: Grossular
Dodecahedral crystal of Grossular, translucent and dark orange, with smaller crystals with the forms of the dodecahedron and the trapezohedron, translucent, lustrous and bright orange. The specimen comes from finds from the year 2023 in the Kayes region.
Koukouri diggins, Trantimou, Commune Diakon, Arrondissement Diakon, Bafoulabé Circle, Kayes Region  Mali (2023)
Specimen size: 3.2 × 2.8 × 1.7 cm = 1.26” × 1.10” × 0.67”
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TXM87AQ1: Grossular
Very aerial group of dodecahedral Grossular crystals that are sharp on the faces of the trapezohedron, translucent, lustrous, honey-yellow in color, and on matrix. The specimen comes from finds from the year 2023 in the Kayes region.
This piece has been reviewed, photographed, and published as a reference specimen in Ste. Marie 2023 by the Russian magazine ‘Mineral Observer’ on page 51 in the volume 28/2023, number 3
Sibinndi, Sangafe area, Commune Diakon, Arrondissement Diakon, Bafoulabé Circle, Kayes Region  Mali (2023)
Specimen size: 6.8 × 3.9 × 3.9 cm = 2.68” × 1.54” × 1.54”

Main crystal size: 3.4 × 2.4 cm = 1.34” × 0.94”
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TR27S3: Grossular
Aggregate of transparent dodecahedral crystals. They have a very intense and uniform green color and present fine striations of the surface of their faces. In contrast with the usual habit for this kind of sample, most of the crystals also show faces on the back of the piece.
Jeffrey Mine, Asbestos, Les Sources RCM, Estrie, Québec  Canada (31/10/1998)
Specimen size: 3.4 × 3.1 × 0.9 cm = 1.34” × 1.22” × 0.35”
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TV67S3: Grossular
Dodecahedral crystals with very well defined faces and edges. On matrix, they are transparent, very bright and have a very pale green color with deep green phantom growths.
Jeffrey Mine, Asbestos, Les Sources RCM, Estrie, Québec  Canada (31/10/1998)
Specimen size: 5.4 × 4.2 × 2.3 cm = 2.13” × 1.65” × 0.91”

Main crystal size: 0.4 × 0.3 cm = 0.16” × 0.12”
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TX86F2: Grossular
Green Grossular, and above all as intense a green as this one, is uncommon. As well as that the dodecahedral crystal is very well defined. Specimens from this locality are not that common anymore.
Mine Lac d'Amiante, Saint-Joseph-de-Coleraine, Les Appalaches RCM, Chaudière-Appalaches, Québec  Canada
Specimen size: 1.5 × 1.5 × 1.5 cm = 0.59” × 0.59” × 0.59”
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ET13M3: Grossular
A floater, a complete Grossular dodecahedron, beveled by trapezohedron faces. Crystal shows a very curious color zoning, creamy color and opaque on the edges and yellow to greenish and transparent in the center of the faces. A novelty, because this color zoning it was not seen before.
Mendié Kossa, Arrondissement Goundara, Bafoulabé Circle, Kayes Region  Mali (2008)
Specimen size: 4.8 × 4.4 × 3.8 cm = 1.89” × 1.73” × 1.50”
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RK16G2: Grossular
A group of dodecahedral crystals perfectly defined, with a good luster and a color quite different than usual for the Grossular from this locality.
Sierra de las Cruces, Sierra Mojada mining district, Municipio Sierra Mojada, Coahuila (Coahuila de Zaragoza)  Mexico
Specimen size: 3.1 × 3 × 2.9 cm = 1.22” × 1.18” × 1.14”
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MK60D3: Grossular
Extremely gemmy Grossular well displayed on its matrix. Great luster!
Vesper Peak, Sultan Basin, Sultan District, Snohomish County, Washington  USA
Specimen size: 6.5 × 5.5 × 5 cm = 2.56” × 2.17” × 1.97”

Main crystal size: 0.7 cm = 0.28”
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CG16D5: Grossular
An eudral Grossular from the Wilui river, an area that is famous for the Wiluite species but that also provides great Grossulars such as this one.
Vilyui River Basin, Vilyuysky, Sakha Republic (Yakutia)  Russia
Specimen size: 5.5 × 4.5 × 2.6 cm = 2.17” × 1.77” × 1.02”
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AL99P9: Grossular (hessonite) with Albite
The crystal is on matrix and has a dominant dodecahedral form modified by the trapezohedron. Luster and transparency are excellent, enhanced by a magnificent color, very intense. One of the sides is in contact wit the residual faces of another, now disappeared, crystal.
Jeffrey Mine, Asbestos, Les Sources RCM, Estrie, Québec  Canada
Specimen size: 6.5 × 5.7 × 4 cm = 2.56” × 2.24” × 1.57”

Main crystal size: 1.7 × 1.6 cm = 0.67” × 0.63”
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HM17P6: Grossular (hessonite) with Clinochlore
Crystals with polycrystalline growths, dominant dodecahedron faces beveled by the trapezohedron, of excellent color, a very intense luster and with small crystals of Clinochlore, on matrix. We note the locality, very unusual, especially for such good specimens.
Cogoleto, Genova Province, Liguria  Italy (±1970)
Specimen size: 6.9 × 5.1 × 4.5 cm = 2.72” × 2.01” × 1.77”

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