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Chevkinite-(Ce) : (Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2[O4|Si2O7]2 | |
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Buer, Bjørkedalen, Porsgrunn, Telemark, Norway Crystals sections to 1,5 cm of Chevkinite-(Ce) embedded in Feldspar from Buer, Bjørkedalen, Porsgrunn, Langesundsfjord-area, Norway. Specimen and photo: Knut Eldjarn. |
| © Knut Eldjarn | Photo ID: 155637 View Count: 100 |
Gadolinite-(Ce) : (Ce,La,Nd,Y)2Fe2+Be2[O|SiO4]2 | |
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Buer, Bjørkedalen, Porsgrunn, Telemark, Norway A greenish black 2 cm section of Gadolinite-Ce in matrix from the type locality at Buer, Bjørkedalen, Porsgrunn in the Langesundsfjord-area. Specimen and photo: Knut Eldjarn. |
| © Knut Eldjarn | Photo ID: 81153 View Count: 266 |
Genthelvite : Zn4Be3[S|(SiO4)3] | |
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Buer, Bjørkedalen, Porsgrunn, Telemark, Norway Unusual green Genthelvite from Buer, Bjørkedalen, Porsgrunn in the Langesundsfjord-area, Norway. Field of view: 5 mm. Specimen and photo: Knut Eldjarn. |
| © Knut Eldjarn | Photo ID: 54738 View Count: 252 |
Tobermorite : Ca5Si6(O,OH)18·5H2O | |
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Buer, Bjørkedalen, Porsgrunn, Telemark, Norway A group of beige, fibrous torbermorite crystals in vuggy feldspar. Field ov view: About 4 mm. The specimen was collected by Svein a. Berge and it is in the micromount collection of OT. Ljostad. |
| © OT. Ljostad 2005 | Photo ID: 40826 View Count: 976 |
Tobermorite : Ca5Si6(O,OH)18·5H2O | |
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Buer, Bjørkedalen, Porsgrunn, Telemark, Norway Crystals of Tobermorite on Aegirine from Buer, Bjørkedalen near Porsgrunn in the Langesundsfjord-area, Norway. Field of view: 8 mm. Specimen and photo: Knut Eldjarn. |
| © Knut Eldjarn | Photo ID: 57976 View Count: 295 |
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