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Norway | |
| [var. Cryptoperthite] Knut Edvard Larsen observation in field september 2012 |
| [var. Cryptoperthite] Berge, Svein Arne, Andersen, Frode (2002) Mineralforekomster i Sandefjordområdet [Mineral localities in the Sandefjord area]. Norsk Bergverksmuseum Skrift, 20. 50-59 |
| [var. Cryptoperthite] Knut Edvard Larsen collection and observation july 1993 |
| [var. Cryptoperthite] Knut Edvard Larsen observation on material collected july 2013 |
| [var. Cryptoperthite] Knut Edvard Larsen photo |
| [var. Cryptoperthite] Knut Edvard Larsen observation 16-3-2008 |
| [var. Cryptoperthite] Berge, Svein Arne (2013) Mineralene i Husebyåsen feltspatbrudd, Vesterøya, Sandefjord [The minerals of Husebyåsen feldspar quarry, Vesterøya, Sandefjord]. Norsk Bergverksmuseum Skrift, 50. 93-99 |
| [var. Cryptoperthite] Knut Edvard Larsen observation in field and collection may 2013 |
Kjela, Yxney, Østerøya, Sandefjord, Vestfold, Norway