Rasvåg feltspatgruver, Hidra, Flekkefjord kommune, Vest-Agder fylke, Norge
3 different feldspar quarries in granite pegmatites which was worked between 1870-1906. The quarries are: Reseraua, Lie and Kokjen.
Scheerer (1844) described polycrase from Hidra (Hitterö). later Brögger (1906) reveals the typelocality to be Rasvåg.
References
- Scheerer, T. (1844): Polykras und Malakon, zwei neue Mineralspecies, Annalen der Physik und Chemie (Herausgegeben zu Berlin von J. C. Poggendorff), Vol. 138, 429-443
- Brøgger, W.C. (1906): Die Mineralien der Südnorwegischen Granitpegmatitgänge, I. Niobate, tantalate, titanate und titanoniobate. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1906, 6, p. 96. [on the TL of polycrase-(Y)]
- Hongslo,T. & Langmyhr, F. J.(1960): Contributions to the mineralogy of Norway no. 6. On the chemical composition of blomstrandine and euxenite. Norsk geologisk Tidsskrift 40,157-164 [analysis on a sample of Aeschynite-(Y) from Rasvåg]
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