| Raade, Gunnar, Kristiansen, Roy (2000) Mineralogy and geochemistry of the Heftetjern granite pegmatite, Tørdal: a progress report. Norsk Bergverksmuseum Skrift, 17. 19-25 Raade, Gunnar, Erambert, Muriel (1999) An intergrowth of scandiobabingtonite and cascandite from the Heftetjern granite pegmatite, Norway. Neues Jahrbuch für Mineralogie - Monatshefte, 1999 (12) 545-550 |
Høydalen, Tørdal, Drangedal, Telemark, Norway