Le Semnon, Martigné-Ferchaud, Fougères-Vitré, Ille-et-Vilaine, Brittany, Francei
| Regional Level Types | |
|---|---|
| Le Semnon | Mine (Abandoned) |
| Martigné-Ferchaud | Commune |
| Fougères-Vitré | Arrondissement |
| Ille-et-Vilaine | Department |
| Brittany | Region |
| France | Country |
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Latitude & Longitude (WGS84):
47° 50' 28'' North , 1° 21' 10'' West
Latitude & Longitude (decimal):
Type:
Mine (Abandoned) - last checked 2020
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Martigné-Ferchaud | 2,619 (2016) | 2.9km |
| Forges-la-Forêt | 269 (2016) | 5.7km |
| Fercé | 559 (2016) | 7.0km |
| Noyal-sur-Brutz | 529 (2016) | 7.4km |
| Coësmes | 1,168 (2016) | 8.0km |
"Southeast of Rennes on the D163 until Corps-Nuds. Take the D41 until Retiers and follow the D94. In the Le Semnon mine and its dumps one will encounter (gold-bearing) arsenopyrite." [Belot, 1978]
Old antimony mine which yielded 500 metric tonnes of antimony between 1895 and 1918.
Later, small quantities of gold were mined, after recognition of its presence in the ore.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
27 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| ⓘ | Native Antimony | 1.CA.05 | Sb |
| ⓘ | Graphite | 1.CB.05a | C |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
| ⓘ | Stibnite | 2.DB.05 | Sb2S3 |
| ⓘ | Aurostibite | 2.EB.05a | AuSb2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Marcasite | 2.EB.10a | FeS2 |
| ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
| ⓘ | Ullmannite | 2.EB.25 | NiSbS |
| ⓘ | Kermesite | 2.FD.05 | Sb2S2O |
| ⓘ | Bournonite | 2.GA.50 | PbCuSbS3 |
| ⓘ | 'Tetrahedrite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)Sb4S12S |
| ⓘ | Chalcostibite | 2.HA.05 | CuSbS2 |
| ⓘ | Berthierite | 2.HA.20 | FeSb2S4 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Ilmenite | 4.CB.05 | Fe2+TiO3 |
| ⓘ | Valentinite | 4.CB.55 | Sb2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | Rutile | 4.DB.05 | TiO2 |
| ⓘ | Lepidocrocite | 4.FE.15 | Fe3+O(OH) |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Ankerite | 5.AB.10 | Ca(Fe2+,Mg)(CO3)2 |
| Group 9 - Silicates | |||
| ⓘ | Muscovite var. Illite | 9.EC.15 | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| ⓘ | 9.EC.15 | KAl2(AlSi3O10)(OH)2 | |
| ⓘ | Allophane | 9.ED.20 | (Al2O3)(SiO2)1.3-2 · 2.5-3H2O |
| Unclassified | |||
| ⓘ | 'Chlorite Group' | - | |
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Leucoxene' | - | |
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ | 'Apatite' | - | Ca5(PO4)3(Cl/F/OH) |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Allophane | (Al2O3)(SiO2)1.3-2 · 2.5-3H2O |
| H | ⓘ Goethite | Fe3+O(OH) |
| H | ⓘ Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| H | ⓘ Lepidocrocite | Fe3+O(OH) |
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| C | Carbon | |
| C | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| C | ⓘ Calcite | CaCO3 |
| C | ⓘ Graphite | C |
| O | Oxygen | |
| O | ⓘ Allophane | (Al2O3)(SiO2)1.3-2 · 2.5-3H2O |
| O | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Goethite | Fe3+O(OH) |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| O | ⓘ Ilmenite | Fe2+TiO3 |
| O | ⓘ Kermesite | Sb2S2O |
| O | ⓘ Lepidocrocite | Fe3+O(OH) |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Rutile | TiO2 |
| O | ⓘ Valentinite | Sb2O3 |
| O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| O | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| F | Fluorine | |
| F | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| Na | Sodium | |
| Na | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Mg | Magnesium | |
| Mg | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Al | Aluminium | |
| Al | ⓘ Allophane | (Al2O3)(SiO2)1.3-2 · 2.5-3H2O |
| Al | ⓘ Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | Silicon | |
| Si | ⓘ Allophane | (Al2O3)(SiO2)1.3-2 · 2.5-3H2O |
| Si | ⓘ Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| P | Phosphorus | |
| P | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| S | Sulfur | |
| S | ⓘ Arsenopyrite | FeAsS |
| S | ⓘ Berthierite | FeSb2S4 |
| S | ⓘ Bournonite | PbCuSbS3 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Chalcostibite | CuSbS2 |
| S | ⓘ Kermesite | Sb2S2O |
| S | ⓘ Marcasite | FeS2 |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Pyrrhotite | Fe1-xS |
| S | ⓘ Sphalerite | ZnS |
| S | ⓘ Stibnite | Sb2S3 |
| S | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| S | ⓘ Ullmannite | NiSbS |
| Cl | Chlorine | |
| Cl | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| K | Potassium | |
| K | ⓘ Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Ca | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| Ti | Titanium | |
| Ti | ⓘ Ilmenite | Fe2+TiO3 |
| Ti | ⓘ Rutile | TiO2 |
| Fe | Iron | |
| Fe | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Fe | ⓘ Arsenopyrite | FeAsS |
| Fe | ⓘ Berthierite | FeSb2S4 |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Goethite | Fe3+O(OH) |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Ilmenite | Fe2+TiO3 |
| Fe | ⓘ Lepidocrocite | Fe3+O(OH) |
| Fe | ⓘ Marcasite | FeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
| Ni | Nickel | |
| Ni | ⓘ Ullmannite | NiSbS |
| Cu | Copper | |
| Cu | ⓘ Bournonite | PbCuSbS3 |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Chalcostibite | CuSbS2 |
| Cu | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| As | Arsenic | |
| As | ⓘ Arsenopyrite | FeAsS |
| Sb | Antimony | |
| Sb | ⓘ Native Antimony | Sb |
| Sb | ⓘ Aurostibite | AuSb2 |
| Sb | ⓘ Berthierite | FeSb2S4 |
| Sb | ⓘ Bournonite | PbCuSbS3 |
| Sb | ⓘ Chalcostibite | CuSbS2 |
| Sb | ⓘ Kermesite | Sb2S2O |
| Sb | ⓘ Stibnite | Sb2S3 |
| Sb | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Sb | ⓘ Ullmannite | NiSbS |
| Sb | ⓘ Valentinite | Sb2O3 |
| Au | Gold | |
| Au | ⓘ Aurostibite | AuSb2 |
| Au | ⓘ Native Gold | Au |
| Pb | Lead | |
| Pb | ⓘ Bournonite | PbCuSbS3 |
Other Regions, Features and Areas containing this locality
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References
patrimoine.bzh (n.d.) http://patrimoine.bzh/gertrude-diffusion/dossier/mine-d-antimoine-du-semnon/7519b56f-76c4-4cdc-8b3b-353f9cd9ee2a
Pochon, Anthony; Gloaguen, Eric; Branquet, Yannick; Poujol, Marc; Ruffet, Gilles; Boiron, Marie-Christine; Boulvais, Philippe; Gumiaux, Charles; Cagnard, Florence; Gouazou, Fanny; et al. (2018) Variscan Sb-Au mineralization in Central Brittany (France): A new metallogenic model derived from the Le Semnon district. Ore Geology Reviews, 97. 109-142 doi:10.1016/j.oregeorev.2018.04.016
Le Semnon, Martigné-Ferchaud, Fougères-Vitré, Ille-et-Vilaine, Brittany, France