| ⓘ Albite Formula: Na(AlSi3O8) |
| ⓘ Allophane Formula: (Al2O3)(SiO2)1.3-2 · 2.5-3H2O References: 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 |
| ⓘ Almandine Formula: Fe2+3Al2(SiO4)3 |
| ⓘ Ankerite Formula: Ca(Fe2+,Mg)(CO3)2 References: 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 |
| ⓘ 'Apatite' Formula: Ca5(PO4)3(Cl/F/OH) Localities: Le Semnon, Martigné-Ferchaud, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceMontbelleux Mine, Luitré, Fougères-Vitré, Ille-et-Vilaine, Brittany, France |
| ⓘ Aragonite Formula: CaCO3 |
| ⓘ Arsenopyrite Formula: FeAsS Localities: Martigné-Ferchaud, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceLGV construction site (railroad), Le Pertre, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceLe Semnon, Martigné-Ferchaud, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceMontbelleux Mine, Luitré, Fougères-Vitré, Ille-et-Vilaine, Brittany, France |
| ⓘ Aurostibite Formula: AuSb2 References: 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 |
| ⓘ Autunite Formula: Ca(UO2)2(PO4)2 · 10-12H2O |
| ⓘ Baryte Formula: BaSO4 |
| ⓘ Berthierite Formula: FeSb2S4 References: 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 |
| ⓘ Bismuthinite Formula: Bi2S3 |
| ⓘ Bournonite Formula: PbCuSbS3 References: 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 |
| ⓘ Calcite Formula: CaCO3 Localities: La Motte Saint-Gervais lime kilns, Val-d'Izé, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceMontbelleux Mine, Luitré, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceLe Semnon, Martigné-Ferchaud, Fougères-Vitré, Ille-et-Vilaine, Brittany, France |
| ⓘ Cassiterite Formula: SnO2 |
| ⓘ Cerussite Formula: PbCO3 |
| ⓘ Chalcopyrite Formula: CuFeS2 Localities: Le Semnon, Martigné-Ferchaud, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceMontbelleux Mine, Luitré, Fougères-Vitré, Ille-et-Vilaine, Brittany, France |
| ⓘ Chalcostibite Formula: CuSbS2 References: 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 |
ⓘ 'Chlorite Group'Localities: Le Semnon, Martigné-Ferchaud, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceMontbelleux Mine, Luitré, Fougères-Vitré, Ille-et-Vilaine, Brittany, France |
| ⓘ Covellite Formula: CuS |
| ⓘ Digenite Formula: Cu9S5 |
| ⓘ Ferberite Formula: FeWO4 |
| ⓘ Fluorapatite Formula: Ca5(PO4)3F |
| ⓘ Fluorite Formula: CaF2 Localities: Le Pertre, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceMontbelleux Mine, Luitré, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceLe Pâtis-Vert quarry, Le Pertre, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceLGV construction site (railroad), Le Pertre, Fougères-Vitré, Ille-et-Vilaine, Brittany, France |
| ⓘ Fougèrite (TL) Formula: Fe2+4Fe3+2(OH)12[CO3] · 3H2O Type Locality: References: Trolard, F., Bourrié, G., Abdelmoula, M., Refait, Ph., Feder, F. (2007): Fougerite, a new mineral of the pyroaurite-iowaite group: description and crystal structure. Clays and Clay Minerals, 55, 323-334. |
| ⓘ Galena Formula: PbS Localities: Le Pertre, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceMontbelleux Mine, Luitré, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceLGV construction site (railroad), Le Pertre, Fougères-Vitré, Ille-et-Vilaine, Brittany, France |
| ⓘ Gersdorffite Formula: NiAsS |
| ⓘ Goethite Formula: Fe3+O(OH) Localities: Le Pertre, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceLe Semnon, Martigné-Ferchaud, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceLGV construction site (railroad), Le Pertre, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceLa Motte Saint-Gervais lime kilns, Val-d'Izé, Fougères-Vitré, Ille-et-Vilaine, Brittany, France |
| ⓘ Graphite Formula: C |
| ⓘ Gypsum Formula: CaSO4 · 2H2O |
| ⓘ Hematite Formula: Fe2O3 References: 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 |
| ⓘ Hübnerite Formula: MnWO4 |
| ⓘ Ilmenite Formula: Fe2+TiO3 Localities: Le Semnon, Martigné-Ferchaud, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceMontbelleux Mine, Luitré, Fougères-Vitré, Ille-et-Vilaine, Brittany, France |
| ⓘ Kermesite Formula: Sb2S2O |
| ⓘ 'K Feldspar' |
| ⓘ 'K Feldspar var. Adularia' Formula: KAlSi3O8 |
| ⓘ Lepidocrocite Formula: Fe3+O(OH) |
ⓘ 'Leucoxene'References: 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 |
| ⓘ 'Limonite' |
| ⓘ Löllingite Formula: FeAs2 |
| ⓘ Mackinawite Formula: FeS |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ Marcasite Formula: FeS2 Localities: Le Semnon, Martigné-Ferchaud, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceLe Pertre, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceMontbelleux Mine, Luitré, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceLGV construction site (railroad), Le Pertre, Fougères-Vitré, Ille-et-Vilaine, Brittany, France |
| ⓘ Molybdenite Formula: MoS2 Localities: Le Pertre, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceMontbelleux Mine, Luitré, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceLGV construction site (railroad), Le Pertre, Fougères-Vitré, Ille-et-Vilaine, Brittany, France |
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 Localities: Le Semnon, Martigné-Ferchaud, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceLe Pertre, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceMontbelleux Mine, Luitré, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceLGV construction site (railroad), Le Pertre, Fougères-Vitré, Ille-et-Vilaine, Brittany, France |
| ⓘ Muscovite var. Damourite Formula: KAl2(AlSi3O10)(OH)2 Description: Replaces topaz. |
| ⓘ Muscovite var. Illite Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2 References: 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 |
| ⓘ Native Antimony Formula: Sb References: 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 |
| ⓘ Native Bismuth Formula: Bi |
| ⓘ Native Gold Formula: Au |
| ⓘ Opal Formula: SiO2 · nH2O Localities: LGV construction site (railroad), Le Pertre, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceFougères, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceFougères Forest, Fougères, Fougères-Vitré, Ille-et-Vilaine, Brittany, France |
| ⓘ Opal var. Girasol Formula: SiO2 · nH2O |
| ⓘ Opal var. Opal-CT Formula: SiO2 · nH2O |
| ⓘ Orthoclase Formula: K(AlSi3O8) |
| ⓘ 'Petroleum var. Bitumen' |
| ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 References: 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 |
| ⓘ Pyrite Formula: FeS2 Localities: Le Pertre, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceLe Semnon, Martigné-Ferchaud, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceMontbelleux Mine, Luitré, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceLGV construction site (railroad), Le Pertre, Fougères-Vitré, Ille-et-Vilaine, Brittany, France |
| ⓘ Pyrrhotite Formula: Fe1-xS Localities: Le Semnon, Martigné-Ferchaud, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceMontbelleux Mine, Luitré, Fougères-Vitré, Ille-et-Vilaine, Brittany, France |
| ⓘ Quartz Formula: SiO2 Localities: Reported from at least 7 localities in this region. |
| ⓘ Rutile Formula: TiO2 Localities: Le Semnon, Martigné-Ferchaud, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceMontbelleux Mine, Luitré, Fougères-Vitré, Ille-et-Vilaine, Brittany, France |
| ⓘ Scheelite Formula: Ca(WO4) |
| ⓘ Schorl Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) |
| ⓘ Siderite Formula: FeCO3 Localities: Le Pertre, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceMontbelleux Mine, Luitré, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceLGV construction site (railroad), Le Pertre, Fougères-Vitré, Ille-et-Vilaine, Brittany, France |
| ⓘ Sphalerite Formula: ZnS Localities: Le Pertre, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceLe Semnon, Martigné-Ferchaud, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceMontbelleux Mine, Luitré, Fougères-Vitré, Ille-et-Vilaine, Brittany, FranceLGV construction site (railroad), Le Pertre, Fougères-Vitré, Ille-et-Vilaine, Brittany, France |
| ⓘ Stannite Formula: Cu2FeSnS4 |
| ⓘ Stibnite Formula: Sb2S3 |
| ⓘ 'Tetrahedrite Subgroup' Formula: Cu6(Cu4C2+2)Sb4S12S References: 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 |
| ⓘ Topaz Formula: Al2(SiO4)(F,OH)2 |
| ⓘ 'Tourmaline' Formula: AD3G6(T6O18)(BO3)3X3Z |
| ⓘ Tungstite Formula: WO3 · H2O |
| ⓘ Ullmannite Formula: NiSbS References: 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 |
| ⓘ Uraninite Formula: UO2 Description: Th-bearing uraninite (5%).
Disseminated in muscovitic albitic post-Cadomian ± greisenized highly-differenciated granite stock (-60, -95 and -130 levels).
Uraninite is linked with albitization.
Three types of occurrence are known :
- Automorph, rounded or xenomorph in pyrite
- With arsenopyrite, sphalerite and bismuth/bismuthinite
- Cemented by organic matter at the contact of pyrite (late)/phyllite (early)/molybdenite
- Rims brecciated zircons
(L. Chauris, C. Laforêt and J. Cotten, Bull. Minéral. , 1985, 108, pp. 955-958).
|
| ⓘ Valentinite Formula: Sb2O3 |
| ⓘ 'Wolframite Group' |