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Albite : Na[AlSi3O8] | |
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Tveit 3 Feldspar Quarry (Steli; Steeli), Tveit, Iveland, Aust-Agder, Norway 5 cm tall specimen of albite. |
| © Olav Revheim | Photo ID: 247519 View Count: 43 |
Almandine : Fe2+3Al2[SiO4]3, Albite-Anorthite Series | |
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Tveit 3 Feldspar Quarry (Steli; Steeli), Tveit, Iveland, Aust-Agder, Norway Almandine crystals with plagioclase feldspar. Almandine garnets are abundant at the location, both as bands in feldspar, and with muscovite mica. The specimen is 12 x 13 cm, and the largest crystal is just over 2 cm in diameter. |
| © Olav Revheim | Photo ID: 222159 View Count: 176 |
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Tveit 3 Feldspar Quarry (Steli; Steeli), Tveit, Iveland, Aust-Agder, Norway Group of almandine crystals embedded in feldspar. The field of view is 8x8 cm. |
| © Olav Revheim | Photo ID: 247523 View Count: 114 |
Almandine : Fe2+3Al2[SiO4]3 | |
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Tveit 3 Feldspar Quarry (Steli; Steeli), Tveit, Iveland, Aust-Agder, Norway Almandine crystal embedded in quartz. These are the best developed crystals from this location, and normally is of good quality. This one is 1,8 cm across. |
| © Olav Revheim | Photo ID: 247529 View Count: 112 |
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Tveit 3 Feldspar Quarry (Steli; Steeli), Tveit, Iveland, Aust-Agder, Norway Flattened garnet in mica. Note the complex crystal growth, which is common for amny of the flattened, but not completely flat crystals found trapped between mica sheets at this location. |
| © Olav Revheim | Photo ID: 247521 View Count: 95 |
Almandine : Fe2+3Al2[SiO4]3 | |
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Tveit 3 Feldspar Quarry (Steli; Steeli), Tveit, Iveland, Aust-Agder, Norway 2 almandine crystals in a feldspar matrix from the Steli pegmatite. The crysstal size is 1 cm. |
| © Olav Revheim | Photo ID: 184879 View Count: 95 |
Almandine : Fe2+3Al2[SiO4]3 | |
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Tveit 3 Feldspar Quarry (Steli; Steeli), Tveit, Iveland, Aust-Agder, Norway Almandine crystal grown inbetween mica sheets. These flattened crystals are typical for the Steli quarry. This crystal is approximately 4 cm in diameter and 3-4mm thick. |
| © Olav Revheim | Photo ID: 184869 View Count: 87 |
Almandine : Fe2+3Al2[SiO4]3 | |
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Tveit 3 Feldspar Quarry (Steli; Steeli), Tveit, Iveland, Aust-Agder, Norway Typical garnet coin. Note the complexity of the crystal. It is just over 3cm in diameter, but only 3mm thick. It is still only transluscent on the edges. |
| © Olav Revheim | Photo ID: 247526 View Count: 83 |
Almandine-Spessartine Series, Muscovite : KAl2[(OH)2|AlSi3O10] | |
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Tveit 3 Feldspar Quarry (Steli; Steeli), Tveit, Iveland, Aust-Agder, Norway flattened garnets in muscovite mica. These crystals are between 7mm and 1cm in diameter, but no more than 1mm thick. |
| © Olav Revheim | Photo ID: 247520 View Count: 159 |
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Tveit 3 Feldspar Quarry (Steli; Steeli), Tveit, Iveland, Aust-Agder, Norway 10 cm long by 8mm wide beryl crystal partly or fully altered to 3mm long bertrandite crystals. This quarry was the first location for bertrandite in Norway. |
| © Olav Revheim | Photo ID: 245485 View Count: 57 |
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