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Vicente Marinho quarry, Mantena, Minas Gerais, Southeast Region, Brazil Fluorite crystal with 5mm on crystallized Oligoclase matrix with 4x3x2cm - October of 2007 |
| © Martins da Pedra | Photo ID: 131634 View Count: 223 |
Albite (Var: Oligoclase) : (Na,Ca)[Al(Si,Al)Si2O8], Aegirine : NaFe3+[Si2O6] | |
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Mt Malosa, Zomba District, Malawi Aegirine on oligoclase 50x40x50 mm. Rui Nunes specimen and photo. |
| © Rui Nunes 2006 | Photo ID: 82278 View Count: 302 |
Albite (Var: Oligoclase) : (Na,Ca)[Al(Si,Al)Si2O8] | |
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Chihuahua, Mexico Very nice cluster of tabular Oligoclase crystals from the famous find of early in the 1990s. The best-formed and most prominent of the crystals displays the beautiful opalescent play of light that these crystals are so famous for. 4.5 x 3.4 x 3 cm |
| © Rob Lavinsky | Photo ID: 22234 View Count: 1321 |
Albite (Var: Oligoclase) : (Na,Ca)[Al(Si,Al)Si2O8], Titanite : CaTi[O|SiO4] | |
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Montijos Quarry, Monte Redondo, Leiria, Leiria District, Portugal Oligoclase with titanite - field width 20 mm. Rui Nunes specimen and photo. |
| © Rui Nunes 2006 | Photo ID: 69735 View Count: 286 |
Albite (Var: Oligoclase) : (Na,Ca)[Al(Si,Al)Si2O8] | |
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Montijos Quarry, Monte Redondo, Leiria, Leiria District, Portugal Crystalline group with crystals up to 0,5cm - Overall size 9x7x3cm - January of 2005 |
| © Martins da Pedra | Photo ID: 41035 View Count: 357 |
Albite (Var: Oligoclase) : (Na,Ca)[Al(Si,Al)Si2O8], Actinolite : ☐Ca2(Mg,Fe2+)5(Si8O22)(OH)2 | |
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Montijos Quarry, Monte Redondo, Leiria, Leiria District, Portugal Crystals up to 5mm with Actinolite crystals up to 1,5cm - Field with 8x5cm - May of 2003 |
| © Martins da Pedra | Photo ID: 53658 View Count: 321 |
Albite (Var: Oligoclase) : (Na,Ca)[Al(Si,Al)Si2O8], Actinolite : ☐Ca2(Mg,Fe2+)5(Si8O22)(OH)2 | |
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Montijos Quarry, Monte Redondo, Leiria, Leiria District, Portugal Crystals up to 5mm with crystals of Actinolite up to 1,5cm - Field with 8x7cm - May of 2003 |
| © Martins da Pedra | Photo ID: 53659 View Count: 268 |
Albite (Var: Oligoclase) : (Na,Ca)[Al(Si,Al)Si2O8] | |
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Montijos Quarry, Monte Redondo, Leiria, Leiria District, Portugal Oligoclase xls field width ~ 15 mm. Rui Nunes specimen and photo. |
| © Rui Nunes 2006 | Photo ID: 68214 View Count: 263 |
Albite (Var: Oligoclase) : (Na,Ca)[Al(Si,Al)Si2O8], Titanite : CaTi[O|SiO4] | |
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Montijos Quarry, Monte Redondo, Leiria, Leiria District, Portugal Oligoclase crystals up to 3mm with Titanite crystals in field with 4x3cm - March of 2004 |
| © Martins da Pedra | Photo ID: 59936 View Count: 246 |
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Montijos Quarry, Monte Redondo, Leiria, Leiria District, Portugal Oligoclase. Specimen size 7,5x5cm. Crystals up to 7mm. Photo and collection; Jorge M. Alves |
| © Jorge M. Alves | Photo ID: 81192 View Count: 202 |
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