Allondon river plain, Dardagny-Russin, Geneva, Switzerlandi
| Regional Level Types | |
|---|---|
| Allondon river plain | Alluvial Deposit |
| Dardagny-Russin | Municipality |
| Geneva | Canton |
| Switzerland | Country |
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Latitude & Longitude (WGS84):
46° 11' 57'' North , 6° 0' 8'' East
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Name(s) in local language(s):
Plaine de l'Allendon, Dardagny-Russin, Genève (Genf; Geneva), Suisse (Schweiz; Svizzera)
The Allondon River forms a wide alluvial plain of 4 x 0.3 km. The river is ending in the Rhône River. The sediments are composed of limestone from the Jura Mountains, autochthonous sandstones (molasses) and crystalline materials carried by the Rhône glacier during the last glaciations (Würm & Riss). Aar granite, Vallorcine granite, serpentinites and eclogitic rocks pebbles to boulders from Valais are very common.
The placers of Allondon are well known and have been exploited by the “orpailleurs” (gold panners) since the Middle Ages or even before. The average composition of the gold is ~Au75.5, Ag23.8, Cu0.6 atom-% (electron microprobe statistics on 200 grains, P.A. Wulser, unpublished results).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Cassiterite Formula: SnO2 Colour: black, red Reference: PITTARD J.-J.(1936). La Recherche de l’or dans la Région de Genève, 93p., Société Générale d’Imprimerie, Genève |
| ✪ 'Garnet Group' Formula: X3Z2(SiO4)3 Reference: PITTARD J.-J.(1936). La Recherche de l’or dans la Région de Genève, 93p., Société Générale d’Imprimerie, Genève |
| ⓘ Gold Formula: Au Description: Grains with compositions going from Au98-Ag02 to Ag70Au30. Reference: PITTARD J.-J.(1936). La Recherche de l’or dans la Région de Genève, 93p., Société Générale d’Imprimerie, Genève |
| ⓘ Rutile Formula: TiO2 Reference: PITTARD J.-J.(1936). La Recherche de l’or dans la Région de Genève, 93p., Société Générale d’Imprimerie, Genève |
| ⓘ Silver Formula: Ag Reference: PITTARD J.-J.(1936). La Recherche de l’or dans la Région de Genève, 93p., Société Générale d’Imprimerie, Genève |
| ⓘ Zircon Formula: Zr(SiO4) Reference: PITTARD J.-J.(1936). La Recherche de l’or dans la Région de Genève, 93p., Société Générale d’Imprimerie, Genève |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| ⓘ | Silver | 1.AA.05 | Ag |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Cassiterite | 4.DB.05 | SnO2 |
| ⓘ | Rutile | 4.DB.05 | TiO2 |
| Group 9 - Silicates | |||
| ⓘ | Zircon | 9.AD.30 | Zr(SiO4) |
| Unclassified Minerals, Rocks, etc. | |||
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Garnet Group | X3Z2(SiO4)3 |
| O | ⓘ Rutile | TiO2 |
| O | ⓘ Zircon | Zr(SiO4) |
| O | ⓘ Cassiterite | SnO2 |
| Si | Silicon | |
| Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
| Si | ⓘ Zircon | Zr(SiO4) |
| Ti | Titanium | |
| Ti | ⓘ Rutile | TiO2 |
| Zr | Zirconium | |
| Zr | ⓘ Zircon | Zr(SiO4) |
| Ag | Silver | |
| Ag | ⓘ Silver | Ag |
| Sn | Tin | |
| Sn | ⓘ Cassiterite | SnO2 |
| Au | Gold | |
| Au | ⓘ Gold | Au |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Pittard, J.-J. (1935) Recherches d’or dans la rivière Allondon. Imprimerie Sonor, Genève, 23 pages.
Pittard, J.-J. (1936) La Recherche de l’or dans la Région de Genève. Société Générale d’Imprimerie, Genève, 93 pages.
Moscariello, A. et al. (1998) Déglaciation würmienne dans des conditions lacustres à la terminaison occidentale du bassin lémanique (Suisse occidentale et France). Eclogae Geologicae Helvetiae, 91, 185-201.
Other Databases
| Wikipedia: | https://en.wikipedia.org/wiki/Allondon |
|---|---|
| Wikidata ID: | Q677867 |
Other Regions, Features and Areas containing this locality
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Allondon river plain, Dardagny-Russin, Geneva, Switzerland