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Allondon river plain, Dardagny-Russin, Geneva, Switzerlandi
Regional Level Types
Allondon river plainAlluvial Deposit
Dardagny-RussinMunicipality
GenevaCanton
SwitzerlandCountry

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Key
Latitude & Longitude (WGS84):
46° 11' 57'' North , 6° 0' 8'' East
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Dardagny1,329 (2013)0.7km
Russin406 (2013)1.6km
Challex1,158 (2016)2.6km
Satigny3,055 (2013)3.1km
Cartigny775 (2013)3.1km
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composition of the gold is ~Au75.5, Ag23.8, Cu0.6 atom-% (electron microprobe statistics on 200 grains, P.A. Wulser, unpublished results).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 Strunz Dana Chemical Elements

Mineral List


5 valid minerals.

Detailed 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

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Silver1.AA.05Ag
Group 4 - Oxides and Hydroxides
Cassiterite4.DB.05SnO2
Rutile4.DB.05TiO2
Group 9 - Silicates
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Garnet Group'-X3Z2(SiO4)3

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Silver1.1.1.2Ag
Group 4 - SIMPLE OXIDES
AX2
Cassiterite4.4.1.5SnO2
Rutile4.4.1.1TiO2
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
Unclassified Minerals, Mixtures, etc.
'Garnet Group'-X3Z2(SiO4)3

List of minerals for each chemical element

OOxygen
O Garnet GroupX3Z2(SiO4)3
O RutileTiO2
O ZirconZr(SiO4)
O CassiteriteSnO2
SiSilicon
Si Garnet GroupX3Z2(SiO4)3
Si ZirconZr(SiO4)
TiTitanium
Ti RutileTiO2
ZrZirconium
Zr ZirconZr(SiO4)
AgSilver
Ag SilverAg
SnTin
Sn CassiteriteSnO2
AuGold
Au GoldAu

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

Eurasian PlateTectonic Plate
EuropeContinent

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
 
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