Feldspar Group from selected localities.


Norway
Vestfold Larvik ⓘ Stavern (Fredriksvärn)	[Perthite var: Cryptoperthite] Esmark, J. (1794) : Nachricht vom labradorischen Feldspath und krystallisirter Molybden in Norwegen. Annalen der Physik 8, 288-291; Tychsen, N. (1794): Chemisk Haandbog. Bind 1. Gyldendals Forlag, København. 507 s
Fredriksvern Verft ⓘ Nordre Blokkhus (Blokkhusberget)	[Perthite var: Cryptoperthite]
ⓘ Pegmatite occurrence near the old military hospital	[Perthite var: Cryptoperthite]
Stavernsøya ⓘ Citadelløya (Festningsøya)	[Perthite var: Cryptoperthite] Larsen, K. E. (2021): Klassiske mineraler og mineralforekomster i Stavern (Fredriksværn) - et bidrag til tidlig norsk mineralogi-historie 1791-1851. Norsk Mineralsymposium 2021, 71-99.
ⓘ Kikutøen	[Perthite var: Cryptoperthite] Weibye, P.C. (1848): Beiträge zur topographischen Mineralogie Norwegens. Archiv für Mineralogie, Geognosie, Bergbau und Hüttenkunde 22:465-544
Jahren pegmatite ⓘ RV 301 Helgeroaveien roadcut	[Perthite var: Cryptoperthite] Knut Edvard Larsen observation in field mars 2021
ⓘ Mathullet	[Perthite var: Cryptoperthite]
ⓘ Rakke	Andersen, O.(1923): Statsgeologenes innberetninger for 1923. Årbok 1923. Norges Geologiske Undersøkelse. 122, 9-26;
ⓘ Feldspar Prospect	Andersen, O.(1923): Statsgeologenes innberetninger for 1923. Årbok 1923. Norges Geologiske Undersøkelse. 122, 9-26
ⓘ Nattmannsodden	[Perthite] Knut Edvard Larsen observation in field oct 2017
ⓘ Pegmatite near Tangmathola	[Perthite] Knut Edvard Larsen observation in field 20-09-2017
ⓘ Pegmatite W of Rakke Fort	[Perthite] Knut Edvard Larsen observation in field 20-09-2017
ⓘ Solstadbakken
Svenner ⓘ Svennerhavna	[Perthite var: Cryptoperthite] Knut Edvard Larsen and observation collection july 2021
ⓘ Trondsrødfjellet roadcut Rv 301 (Agnes)	Larsen, A. O. (1978): Polymignitt og catapleiitt fra Brunlanes. Geologisk Museum. Interne notater 1961-1990. Published by Geologisk Museums Venner, Oslo 1991, p 71 Haifler, J., Škoda, R., Filip, J., Larsen, A. O., & Rohlíček, J. (2021). Zirconolite from Larvik Plutonic Complex, Norway, its relationship to stefanweissite and nöggerathite, and contribution to the improvement of zirconolite end-member systematics. American Mineralogist, 106(8), 1255-1272.
ⓘ Steinvika	[Perthite var: Cryptoperthite] Knut Edvard Larsen observation in field and collection oct. 2021

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