Kalkovnen, Østhagan Nature Reserve, Grua mining district, Lunner, Akershus, Norway

Detail of a large specimen showing large garnet crystals from Kalkovnen, Grua, Lunner, Oppland, Norway. The largest crystal measures ~4 cm across. A core of dark, blackishgreen andradite is covered by an outher rim of brownish grossular. The specimen was seen on display at the Bergen Steinsenter, Norway in May 2011. Photo: Knut Edvard Larsen

© Knut Edvard Larsen

FOV ~ 1 cm.

© Stefan Koch

Dark green Andradite crystals to 5 cm embedded in Calcite from Kalkovnen, Grua, Oppland, Norway. Collected in 1967. Specimen and photo: Knut Eldjarn.

© Knut Eldjarn

A 11 x 8 cm specimen of Grossular crystals on limestone from Kalkovnen, Grua, Hadeland, Norway. Collected in 1965. Specimen and photo: Knut Eldjarn.

© Knut Eldjarn

Long prismatic white crystals of scapolite in a cavity. The green garnet crystals are probably andradite. Size of view: 3 x 2 cm Photo & collection: Atle Michalsen

© Atle Michalsen

A 3 cm aggregate of Epidote crystals embedded in Calcite from Kalkovnen, Grua, Oppland, Norway. Collected in 1967. Specimen and photo: Knut Eldjarn.

© Knut Eldjarn

Andradite crystals to 3 cm in Calcite from Kalkovnen, Grua, Oppland, Norway. Collected in 1968. Specimen and photo: Knut Eldjarn.

© Knut Eldjarn

Grossular as a brownish carpet over the dark andradite crystals. This specimen is from Kalkovnen. Size of specimen: 7 x 5 cm Photo & collection: A. Michalsen

© AM

110 x 60 x 40 mm andradite crystallized on both sides. Largest crystal 20 mm.

Crystals of scapolite (marialite) with andradite from Kalkovnen, Grua, Lunner, Norway. Collected in 1967.

© Knut Eldjarn

Crystals of andradite in calcite from Kalkovnen, Grua, Akershus, Norway. Collected in 1967.

© Knut Eldjarn

Uvarovite found in 1912 and it’s the material that Prof. Victor Goldschmidt used when he described uvarovite from Kalkovnen, Grua. Collection Natural History Museum of Oslo. Photo Øivind Thoresen 2022.

© ØT

Andradite crystals on matrix (metamorphosed limestone). From Kalkovnen, Østhagan, Grua, Lunner, Oppland, Norway. Obtained by trade in July 2012 from Bjørn Otto Hansen who collected the specimen in 1982.

© Knut Edvard Larsen

Crystals of andradite from Kalkovnen, Grua, Akershus, Norway. Collected 1967.

© Knut Eldjarn

Crystals of andradite in calcite from Kalkovnen, Grua, Akershus, Norway. Collected in 1967.

© Knut Eldjarn