Quartz from selected localities.
Norway | |
| Knut Edvard Larsen collection |
| Brøgger, W.C. & Reusch, H.H. (1875): Vorkommen des Apatit in Norwegen. Zeitschrift der Deutschen Geologischen Gesellschaft 27: 646-702 |
| Neumann, H. (ed)(1960): Mineral occurences in southern Norway. Guide to excursions no. A.15 and no. C.12. International Geological Congress XXI Session Norden 1960, Oslo. 18p. | |
| Knut Edvard Larsen observation on the dump, May 2011. | |
| Green, J.C.(1956): Geology of the Storkollen-Blankenberg area, Kragerø, Norway. Norsk Geologisk Tidsskrift 36, 89-140 |
| Larsen, K. E. (2008): Lindvikskollen-Kalstadgangen, Kragerø- en klassisk norsk granittpegmatitt. Norsk Bergverksmuseum Skrift, 38, 37-44 | |
| Sæbø, P.Chr. & Reitan, P.H. (1959): An occurence of zeolites at Kragerø, southern Norway. Norges Geologiske Undersøkelse 205, 174-180 | |
| Knut Eldjarn collection | |
| Green, J.C. (1956): Geology of the Storkollen-Blankenberg area, Kragerø, Norway. Norsk Geologisk Tidsskrift 36, 89-140 |
| Green, J.C.(1956): Geology of the Storkollen-Blankenberg area, Kragerø, Norway. Norsk Geologisk Tidsskrift 36, 89-140 | |
| Larsen, K.E. (2016): Noen funn av mineraler i Norge 2015-2016. Norsk Mineralsymposium 2016: 127-135 | |
| Weibye, P.C. (1846): Polychroilith, ein neues Mineral. Neues Jahrbuch für Mineralogie, Geognosie, Geologie und Petrefakten-Kunde. 1846, 289-292. + Tafel IIa |
| Nordrum, F.S. Larsen, A.O. & Austrheim, H. (2000): Ni,Co-mineralizations in the Valberg quarry, Kragerø, South Norway: a progress report. Norsk Bergverksmuseum Skrift. 17: 64-70 |
Valberg Quarry, Valberg, Kragerø, Telemark, Norway