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Albite : Na[AlSi3O8], Chamosite-Clinochlore Series | |
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Eiras Quarry (incl. Eiras de cima quarry), Sanfins, Valença do Minho, Viana do Castelo District, Portugal Albite floatter, coated by chamoisite. Specimen size: 63mm. |
| © nuno afonso | Photo ID: 135192 View Count: 47 |
Albite : Na[AlSi3O8] | |
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Nossa Senhora da Esperança Quarry, Quintela de Azurara, Mangualde, Viseu District, Portugal Albite floatter measuring 43mm. |
| © nuno afonso | Photo ID: 134619 View Count: 60 |
Apatite-(CaF) : Ca5[F|(PO4)3], Opal (Var: Opal-AN) : SiO2·nH2O, Albite : Na[AlSi3O8], Muscovite : KAl2[(OH)2|AlSi3O10] | |
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Nossa Senhora da Esperança Quarry, Quintela de Azurara, Mangualde, Viseu District, Portugal Nice sample of albite coated by hyalite and some white apatite on the tops. Apatite cristals up to 2mm. |
| © nuno afonso | Photo ID: 134622 View Count: 47 |
Apatite-(CaF) : Ca5[F|(PO4)3], Quartz (Var: Smoky Quartz) : SiO2, Albite : Na[AlSi3O8] | |
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Carvalhal Quarry, Penalva do Castelo, Viseu District, Portugal Blue fluorapatite on albite, with a small quartz cristal. Fluorapatite cristal size: 12mm. |
| © nuno afonso | Photo ID: 134612 View Count: 62 |
Apatite-(CaF) : Ca5[F|(PO4)3], Quartz (Var: Smoky Quartz) : SiO2 | |
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Carvalhal Quarry, Penalva do Castelo, Viseu District, Portugal Curved apatite together with quartz and altered chlorites. Apatite size: 34mm. |
| © nuno afonso | Photo ID: 134968 View Count: 39 |
Apatite-(CaF) : Ca5[F|(PO4)3], Muscovite : KAl2[(OH)2|AlSi3O10] | |
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Real quarry, Penalva do Castelo, Viseu District, Portugal Perfectly clear and gemmy apatite on a muscovite "bed". Cristal size: 8mm. |
| © nuno afonso | Photo ID: 134967 View Count: 41 |
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Real quarry, Penalva do Castelo, Viseu District, Portugal Nice blue apatite with an unusual form, maybe disturbed by muscovite? Cristal size: 5mm. |
| © nuno afonso | Photo ID: 134986 View Count: 37 |
Bertrandite : Be4[(OH)2|Si2O7], Albite : Na[AlSi3O8], Chlorite Group | |
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Carvalhal Quarry, Penalva do Castelo, Viseu District, Portugal Bertrandite cristals displayed on albite cristals, and some Chlorites spheres. Bertrandite cristals up to 6mm. |
| © nuno afonso | Photo ID: 134613 View Count: 65 |
Beryl : Be3Al2Si6O18 | |
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Vila Seca Quarry, Chãs de Tavares, Mangualde, Viseu District, Portugal Beryl cristal on quartz matrix Cristal siza: 33mm. |
| © nuno afonso | Photo ID: 133719 View Count: 57 |
Beryl : Be3Al2Si6O18 | |
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Assunção Mine, Aldeia Nova, Ferreira de Aves, Sátão, Viseu District, Portugal Beryl cristal on matrix. Cristal size: 60mm. |
| © nuno afonso | Photo ID: 133947 View Count: 77 |
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