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Pyrite : FeS2 | |
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Glageon Quarry (Le Cailloit Quarry), Avesnes sur Helpe, Nord, Nord-Pas-de-Calais, France Unusually curved "trapezohedral" crystals of Pyrite, partly pseudomorphed to Limonite (ca. 3.0 x 2.5 x 2.0 cm). From a very limited find in 1984 (ca. 20 specimens self-collected and never found again) in a limonitic area of the quarry. JFC specimen (#00514) and photograph. |
| © JF Carpentier 2007 | Photo ID: 119295 View Count: 123 |
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Glageon Quarry (Le Cailloit Quarry), Avesnes sur Helpe, Nord, Nord-Pas-de-Calais, France Crystals with 24 faces (Tetrahexahedron: group m3m {120}). The largest crystal measures 8mm. This special crystal shape was met only in the years 1975à78, in a very limited zone of the quarry. Photograph and collection: CLAUDE jm |
| © jm.CLAUDE | Photo ID: 118331 View Count: 95 |
Pyrite : FeS2 | |
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Glageon Quarry (Le Cailloit Quarry), Avesnes sur Helpe, Nord, Nord-Pas-de-Calais, France Crystals with 24 faces (Tetrahexahedron: group m3m {120}) These crystals included in limestone are released partially with ClH. They were never found in the cracks or the cavities of the rock. The largest crystal measures 8mm. This special crystal shape was met only in the years 1975à78, in a very limited zone of the quarry.Lucky find on the site ... |
| © jm.CLAUDE | Photo ID: 117992 View Count: 79 |
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Glageon Quarry (Le Cailloit Quarry), Avesnes sur Helpe, Nord, Nord-Pas-de-Calais, France Cluster of unusually curved octahedral crystals of Pyrite, partly pseudomorphed to Limonite (overall 3.0 x 2.5 x 2.0 cm). From a very limited find in 1984 (ca. 20 specimens self-collected and never found again) in a limonitic area of the quarry. JFC specimen (#00510) and photograph. |
| © JF Carpentier 2007 | Photo ID: 119293 View Count: 78 |
Pyrite : FeS2 | |
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Glageon Quarry (Le Cailloit Quarry), Avesnes sur Helpe, Nord, Nord-Pas-de-Calais, France Détail of the Photo ID: 208970 with the notation (Miller indices) of visible faces.Photograph and collection jm.CLAUDE |
| © jm.Claude | Photo ID: 208971 View Count: 60 |
Pyrite : FeS2 | |
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Glageon Quarry (Le Cailloit Quarry), Avesnes sur Helpe, Nord, Nord-Pas-de-Calais, France Unusual pyrite crystal,formed by the combination of the octahedron (111) and tétrahexaèdre (113). The polyhedron formed has 32 faces. 24 faces in isosceles triangles and 08 faces equilateral triangles.The pyrite crystal is about 4mm between summits.Collected on the site years 1976/78.Photograph and collection jm.CLAUDE |
| © jm.Claude | Photo ID: 208970 View Count: 32 |
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