RubyKleggåsen Ruby Quarry, Froland, Aust-Agder, Norway
Situated about 11 km NW of the town Arendal. The corundum-bearing rocks were discovered in 1956. It has been quarried for red corundum specimens.
References
-Oftedahl, Chr. (1963): Contributions to the mineralogy of Norway No 19. Red corundum of Froland at Arendal. Norsk Geologisk Tidsskrift 43, 431-439
- Nilssen, B. & Raade, G. (1973): Contribution to the mineralogy of Norway, No 54. On Chromian Montmorillonite (Volkonskoite) in Norway. Norsk Geologisk Tidsskrift 54: 329-331
- Wilke, H.-J. (1976): Mineral-Fundstellen Band 4: Skandinavien. Chr. Weise Verlag, München, p 55-58
- Eldjarn, K. (1979): Mineraler i Norge- Korund. NAGS-nytt 6 (4): 29-31
- Nijland, T.G., Liuaw, F., Visser, D., Maijer, C. & Senior, A. (1993): Metamorphic petrology of the Froland corundum-bearing rocks, the cooling and uplift history of the Bamble Sector, Norway. Norges Geologiske Undersøkelse Bulletin 424: 51-63
- Nordrum, F. S. (2007): Nyfunn av mineraler i Norge 2006-2007. STEIN 34 (2), 14-26
Mineral List
16 entries listed. 10 valid minerals.
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