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Nuno Afonso's Gallery

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Albite : Na[AlSi3O8], Chamosite-Clinochlore Series

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 afonsoPhoto ID: 135192    View Count: 219

Albite : Na[AlSi3O8]

Nossa Senhora da Esperança Quarry, Quintela de Azurara, Mangualde, Viseu District, Portugal

Albite floatter measuring 43mm.
 © nuno afonsoPhoto ID: 134619    View Count: 156

Apatite-(CaF) : Ca5[F|(PO4)3], Opal (Var: Opal-AN) : SiO2·nH2O, Albite : Na[AlSi3O8], Muscovite : KAl2[(OH)2|AlSi3O10]

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 afonsoPhoto ID: 134622    View Count: 124

Apatite-(CaF) : Ca5[F|(PO4)3], Quartz (Var: Smoky Quartz) : SiO2, Albite : Na[AlSi3O8]

Carvalhal Quarry, Penalva do Castelo, Viseu District, Portugal

Blue fluorapatite on albite, with a small quartz cristal.
Fluorapatite cristal size: 12mm.
 © nuno afonsoPhoto ID: 134612    View Count: 135

Apatite-(CaF) : Ca5[F|(PO4)3], Quartz (Var: Smoky Quartz) : SiO2

Carvalhal Quarry, Penalva do Castelo, Viseu District, Portugal

Curved apatite together with quartz and altered chlorites.
Apatite size: 34mm.
 © nuno afonsoPhoto ID: 134968    View Count: 118

Apatite-(CaF) : Ca5[F|(PO4)3], Muscovite : KAl2[(OH)2|AlSi3O10]

Real quarry, Penalva do Castelo, Viseu District, Portugal

Perfectly clear and gemmy apatite on a muscovite "bed".
Cristal size: 8mm.
 © nuno afonsoPhoto ID: 134967    View Count: 139

Multiple photos availableApatite-(CaF) : Ca5[F|(PO4)3]

Real quarry, Penalva do Castelo, Viseu District, Portugal

Nice blue apatite with an unusual form, maybe disturbed by muscovite?
Cristal size: 5mm.
 © nuno afonsoPhoto ID: 134986    View Count: 120

Bertrandite : Be4[(OH)2|Si2O7], Albite : Na[AlSi3O8], Chlorite Group

Carvalhal Quarry, Penalva do Castelo, Viseu District, Portugal

Bertrandite cristals displayed on albite cristals, and some Chlorites spheres.
Bertrandite cristals up to 6mm.
 © nuno afonsoPhoto ID: 134613    View Count: 175

Beryl : Be3Al2Si6O18

Vila Seca Quarry, Chãs de Tavares, Mangualde, Viseu District, Portugal

Beryl cristal on quartz matrix
Cristal siza: 33mm.
 © nuno afonsoPhoto ID: 133719    View Count: 144

Beryl : Be3Al2Si6O18

Assunção Mine, Aldeia Nova, Ferreira de Aves, Sátão, Viseu District, Portugal

Beryl cristal on matrix.
Cristal size: 60mm.
 © nuno afonsoPhoto ID: 133947    View Count: 189
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