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Bardane, Fjørtoft Island, Haram, Møre og Romsdal, Norway

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Name(s) in local language(s):Bardane, Fjørtoft, Haram kommune, Møre og Romsdal, Norge


Western Gneiss Region of Norway. Microdiamonds has been found in a mantle-derived peridotite lens.
LT-UHP mantellic (> 13 km) websterite pod.
Diamond are foud as inclusions in spinel included within pyrope megacrysts. They were formed from infiltrating UHP-LT fluids.

UHP diamond-bearing garnet-kyanite gneisses and derived kyanite-garnet-sillimanite-biotite-plagioclase mylonites (sinistral shear fabrics).

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5 valid minerals.

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References

Norges første diamanter- Oppsiktsvekkende funn på Sunnmøre. Bergverks-Nytt, nr 5-1993, 6-7.

van Roermund, H.L.M., Carswell, D. A., Drury, M. R and Heijboer, T.C. (2002): Microdiamonds in a megacrystic garnet websterite pod from Bardane on the island of Fjørtoft, western Norway: Evidence for diamond formation in mantle rocks during deep continental subduction. Geology. 30: 959-962

Dobrzhinetskaya, L.F. Eide, E. Larsen, R.B. Sturt, B.A. Trønnes, R.G. Smith, D.C. Taylor, W.R. & Posukhova, T.V. (1995): Microdiamond in high-grade metamorphic rocks of the Western Gneiss region, Norway. Geology, 23, 597-600.

Carswell, D. A., Brueckner, H. K., Cuthbert,S. J., Mehta, K. and O'Brien, P. J. (2003): The timing of stabilisation and the exhumation rate for ultra-high pressure rocks in the Western Gneiss Region of Norway. Journal of Metamorphic Geology. 21: 601–612

Carswell, D.A. & Van Roermund, H.L.M. (2005): On multi-phase mineral inclusions associated with microdiamond formation in mantle-derived peridotite lens at Bardane on Fjørtoft, West Norway. European Journal of Mineralogy. 17, 31-42.


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