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Le Gaud veins & Le Frau veins, Desges, Brioude, Haute-Loire, Auvergne-Rhône-Alpes, Francei
| Regional Level Types | |
|---|---|
| Le Gaud veins & Le Frau veins | - not defined - |
| Desges | Vein |
| Brioude | Arrondissement |
| Haute-Loire | Department |
| Auvergne-Rhône-Alpes | Region |
| France | Country |
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Other/historical names associated with this locality:
Auvergne; Rhône-Alpes
Four quartz-galena veins in garnet-sillimanite-staurolite-muscovite-biotite gneisses associated with leptynites and amphibolites.
Le Gaud : 2 veins of galena (silver-bearing : up to 1030 g/t) and microbrecciated quartz in silicified mylonitized leptynites.
These 2 veins are located on North side of D30 road, left bank of La Desges, 1300 meters before Desges and 2600 meters from Chazelles.
Le Frau : 2 galena-quartz veins in front of Le Frau farm, at the confluence of two brooks.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Albite Formula: Na(AlSi3O8) |
| ⓘ Arsenopyrite Formula: FeAsS Description: Crusts of small crystals on pyrrhotite |
| ⓘ Cerussite Formula: PbCO3 Description: Pseudomorphs after galena |
| ⓘ Chalcopyrite Formula: CuFeS2 Description: Included in galena |
| ⓘ Chamosite var. Brunsvigite Formula: (Fe2+,Mg,Al)6(Si,Al)4O10(OH)8 Description: Composition near the joint brunsvigite-ripidolite-pychnochlorite. |
| ⓘ 'Chlorite Group' Description: Composition near the joint brunsvigite-ripidolite-pychnochlorite. |
| ⓘ Clinochlore Formula: Mg5Al(AlSi3O10)(OH)8 Description: Chlorite near brunsvigite/ripidolite/pychnochlorite boundary. |
| ⓘ Clinochlore var. Ripidolite Formula: (Mg,Fe,Al)6(Si,Al)4O10(OH)8 Description: Chlorite near brunsvigite/ripidolite/pychnochlorite boundary. |
| ⓘ Corrensite Formula: (Mg,Fe)9((Si,Al)8O20)(OH)10 · nH2O |
| ⓘ Dolomite Formula: CaMg(CO3)2 Description: Associated with chlorite |
| ⓘ Galena Formula: PbS Description: Very rich in silver |
| ⓘ Goethite Formula: Fe3+O(OH) Description: Pseudomorphs after pyrite |
| ⓘ Hematite Formula: Fe2O3 |
| ⓘ Kaolinite Formula: Al2(Si2O5)(OH)4 |
| ⓘ 'Leucoxene' Description: Pseudomorphs after ttanomagnetite |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ Magnetite var. Titanium-bearing Magnetite Formula: Fe2+(Fe3+,Ti)2O4 |
| ⓘ Marcasite Formula: FeS2 |
| ⓘ Montmorillonite Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| ⓘ Pyrite Formula: FeS2 Description: Altered into goethite.
Associated with marcasite, replaces pyrrhotite and is then encrusted by arsenopyrite. |
| ⓘ Pyrrhotite Formula: Fe1-xS Description: Replaced by pyrite+marcasite |
| ⓘ Quartz Formula: SiO2 Description: Microbrecciated quartz. |
| ⓘ Sphalerite Formula: ZnS Description: Included in galena |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Marcasite | 2.EB.10a | FeS2 |
| ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | var. Titanium-bearing Magnetite | 4.BB.05 | Fe2+(Fe3+,Ti)2O4 |
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
| ⓘ | Cerussite | 5.AB.15 | PbCO3 |
| Group 9 - Silicates | |||
| ⓘ | Montmorillonite | 9.EC.40 | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| ⓘ | Clinochlore | 9.EC.55 | Mg5Al(AlSi3O10)(OH)8 |
| ⓘ | var. Ripidolite | 9.EC.55 | (Mg,Fe,Al)6(Si,Al)4O10(OH)8 |
| ⓘ | Chamosite var. Brunsvigite | 9.EC.55 | (Fe2+,Mg,Al)6(Si,Al)4O10(OH)8 |
| ⓘ | Corrensite | 9.EC.60 | (Mg,Fe)9((Si,Al)8O20)(OH)10 · nH2O |
| ⓘ | Kaolinite | 9.ED.05 | Al2(Si2O5)(OH)4 |
| ⓘ | Albite | 9.FA.35 | Na(AlSi3O8) |
| Unclassified | |||
| ⓘ | 'Chlorite Group' | - | |
| ⓘ | 'Leucoxene' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| H | ⓘ Corrensite | (Mg,Fe)9((Si,Al)8O20)(OH)10 · nH2O |
| H | ⓘ Goethite | Fe3+O(OH) |
| H | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| H | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| H | ⓘ Clinochlore var. Ripidolite | (Mg,Fe,Al)6(Si,Al)4O10(OH)8 |
| H | ⓘ Chamosite var. Brunsvigite | (Fe2+,Mg,Al)6(Si,Al)4O10(OH)8 |
| C | Carbon | |
| C | ⓘ Cerussite | PbCO3 |
| C | ⓘ Dolomite | CaMg(CO3)2 |
| O | Oxygen | |
| O | ⓘ Albite | Na(AlSi3O8) |
| O | ⓘ Cerussite | PbCO3 |
| O | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| O | ⓘ Corrensite | (Mg,Fe)9((Si,Al)8O20)(OH)10 · nH2O |
| O | ⓘ Dolomite | CaMg(CO3)2 |
| O | ⓘ Goethite | Fe3+O(OH) |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Clinochlore var. Ripidolite | (Mg,Fe,Al)6(Si,Al)4O10(OH)8 |
| O | ⓘ Magnetite var. Titanium-bearing Magnetite | Fe2+(Fe3+,Ti)2O4 |
| O | ⓘ Chamosite var. Brunsvigite | (Fe2+,Mg,Al)6(Si,Al)4O10(OH)8 |
| Na | Sodium | |
| Na | ⓘ Albite | Na(AlSi3O8) |
| Na | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Mg | Magnesium | |
| Mg | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Mg | ⓘ Corrensite | (Mg,Fe)9((Si,Al)8O20)(OH)10 · nH2O |
| Mg | ⓘ Dolomite | CaMg(CO3)2 |
| Mg | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Mg | ⓘ Clinochlore var. Ripidolite | (Mg,Fe,Al)6(Si,Al)4O10(OH)8 |
| Mg | ⓘ Chamosite var. Brunsvigite | (Fe2+,Mg,Al)6(Si,Al)4O10(OH)8 |
| Al | Aluminium | |
| Al | ⓘ Albite | Na(AlSi3O8) |
| Al | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Al | ⓘ Corrensite | (Mg,Fe)9((Si,Al)8O20)(OH)10 · nH2O |
| Al | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| Al | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Al | ⓘ Clinochlore var. Ripidolite | (Mg,Fe,Al)6(Si,Al)4O10(OH)8 |
| Al | ⓘ Chamosite var. Brunsvigite | (Fe2+,Mg,Al)6(Si,Al)4O10(OH)8 |
| Si | Silicon | |
| Si | ⓘ Albite | Na(AlSi3O8) |
| Si | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Si | ⓘ Corrensite | (Mg,Fe)9((Si,Al)8O20)(OH)10 · nH2O |
| Si | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| Si | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Clinochlore var. Ripidolite | (Mg,Fe,Al)6(Si,Al)4O10(OH)8 |
| Si | ⓘ Chamosite var. Brunsvigite | (Fe2+,Mg,Al)6(Si,Al)4O10(OH)8 |
| S | Sulfur | |
| S | ⓘ Arsenopyrite | FeAsS |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Galena | PbS |
| S | ⓘ Marcasite | FeS2 |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Pyrrhotite | Fe1-xS |
| S | ⓘ Sphalerite | ZnS |
| Ca | Calcium | |
| Ca | ⓘ Dolomite | CaMg(CO3)2 |
| Ca | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Ti | Titanium | |
| Ti | ⓘ Magnetite var. Titanium-bearing Magnetite | Fe2+(Fe3+,Ti)2O4 |
| Fe | Iron | |
| Fe | ⓘ Arsenopyrite | FeAsS |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Corrensite | (Mg,Fe)9((Si,Al)8O20)(OH)10 · nH2O |
| Fe | ⓘ Goethite | Fe3+O(OH) |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Marcasite | FeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
| Fe | ⓘ Clinochlore var. Ripidolite | (Mg,Fe,Al)6(Si,Al)4O10(OH)8 |
| Fe | ⓘ Magnetite var. Titanium-bearing Magnetite | Fe2+(Fe3+,Ti)2O4 |
| Fe | ⓘ Chamosite var. Brunsvigite | (Fe2+,Mg,Al)6(Si,Al)4O10(OH)8 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| As | Arsenic | |
| As | ⓘ Arsenopyrite | FeAsS |
| Pb | Lead | |
| Pb | ⓘ Cerussite | PbCO3 |
| Pb | ⓘ Galena | PbS |
Other Regions, Features and Areas containing this locality
Eurasian PlateTectonic Plate
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Le Gaud veins & Le Frau veins, Desges, Brioude, Haute-Loire, Auvergne-Rhône-Alpes, France