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Hidra (Hitterø), Flekkefjord, Vest-Agder, Norway
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Name(s) in local language(s): Hidra, Flekkefjord kommune, Vest-Agder fylke, Norge
Hidra (formerly Hitterö) is an island on the southwestern coast of Norway. On the eastern part of the island, around the small Rasvåg bay, several granite pegmatite dikes has been quarried for feldspar. Quarrying started around 1870, and ended around 1906-1910. One eexception is the Iglettjødn quarry which was quarried until around 1930.

Xenotime-(Y) (Berzelius, 1824, under the name Phosporsyrad Ytterjord, Beudant 1832 under the name Xenotime), Kainosite-(Y) (Nordenskiöld, 1886), Polycrase-(Y) (Scheerer, 1844) and Aeschynite-(Y) (Brögger, 1906, under the name blomstrandine), were first described from pegmatites in this area. The pegmatites are also especially known for having produced large crystals of Gadolinite-(Y).

There is also a two pyroxene-bearing granulite containing ferrosilite.

Mineral List

Mineral list contains entries from the region specified including sub-localities
Aeschynite-(Y) (TL)
var: Oligoclase

'Euxenite-(Y)-Polycrase-(Y) series'
'Feldspar Group'
Kainosite-(Y) (TL)
Polycrase-(Y) (TL)
Tengerite-(Y) ?
Xenotime-(Y) (TL)
var: Malacon

39 entries listed. 24 valid minerals. 4 type localities (valid minerals).

Localities in this Region


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Berzelius, J. (1824): Undersökning af några Mineralier. 1. Phosphorsyrad Ytterjord. Kongliga Svenska Vetenskaps-Akademiens Handlingar, 2 : 334-338

Berzelius, J. (1825): Account of two newly discovered Mineral Species. Edinburgh Journal of Science, 3, 327-332 [on xenotime-(Y)]

Beudant, F.S. (1832): Traité élémentaire de Minéralogie, second edition, 2 volumes: 2: 552.[on xenotime]

Scheerer, T. (1843): Ueber den Fundort und die Krystallform der phosphorsauren Yttererde. Annalen der Physik und Chemie (herausgegeben zu Berlin von J.C.Poggendorff),60:591-594

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

Lindström, G. (1881): Analys af thorit från Hitterö. Geologiska Föreningen i Stockholm Förhandlingar 5, p. 500 [analysis of thorite from Hidra]

Prior, G. T. (1899): Minerals from Swaziland: Niobates and Titanates of the Rare Earths, Chemically Allied to Euxenite and Fergusonite; Cassiterite, Monazite, etc. The “Æschynite” from Hitterö. Mineralogical Record, 12: 96-101

Schetelig, J. (1922): Gadolinit. in Brøgger, W.C, Vogt, Th. & Schetelig, J. (1922): Die Mineralien der südnorwegischen Granitpegmatitgänge. II. Silikate der seltenen Erde. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1922. 11, 88-123 + plates XIV -XV

Adamson, O. J. (1942): The granite pegmatites of Hitterö, SW Norway. Geologiska Föreningen i Stockholm Förhandlingar 64: 97-116

Deer, W. A., Howie, R. A., and Zussman, J., 1963, Rock-Forming Minerals, v 2 Chain Silicates, p 21.

Wilke, H.J. (1976): Mineral-Fundstellen Band 4: Skandinavien. Chr. Weise Verlag, München, p 63-66

Ulland, L. A. (1994): Gruvedrift. in Hanssen, J., Hansson, H. & Larsen, O. (eds): (1994) Ytterst mot havet. Kystmuseet Fedrenes Minne 50 år. Hidra 1994, 63-72

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