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Grua Tunnel, Grua, Lunner, Oppland, Norway

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Amphibole Group (Var: Uralite), Andradite : Ca3Fe3+2[SiO4]3

Grua Tunnel, Grua, Lunner, Oppland, Norway

Uralite = pseudomorphs of Actinolite after Diopside crystals to 2 cm with small red Andradite crystals from the Grua railroad tunnel, Oppland, Norway. Specimen and photo: Knut Eldjarn.
 © Knut EldjarnPhoto ID: 148022    View Count: 169

Andradite : Ca3Fe3+2[SiO4]3

Grua Tunnel, Grua, Lunner, Oppland, Norway

A 6 x 5 cm specimen with large, brown Andradite crystals embedded in Calcite from the Grua railroad-tunnel, Oppland, Norway. Specimen and photo: Knut Eldjarn.
 © Knut EldjarnPhoto ID: 148021    View Count: 111

Andradite : Ca3Fe3+2[SiO4]3, Amphibole Group (Var: Uralite)

Grua Tunnel, Grua, Lunner, Oppland, Norway

A 9 cm specimen with red crystals of Andradite and green "Uralite" pseudomorphs of Actinolite after Diopside crystals from the Grua railroad tunnel, Oppland, Norway. Specimen and photo: Knut Eldjarn.
 © Knut EldjarnPhoto ID: 148023    View Count: 95

Sphalerite : (Zn,Fe2+)S, Chlorite Group, Pyrite : FeS2

Grua Tunnel, Grua, Lunner, Oppland, Norway

Black sphalerite crystals with pyrite, chlorite and white small crystals of albite. Size of specimen : 5 X 2,5 cm. Photo & coll.: Knut Edvard Larsen
 © K.E.LarsenPhoto ID: 191373    View Count: 95
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