| | Report (chapter) | granites of the Mykle region in the southern part of the Oslo igneous province, Norway BERNARD BONIN &...granites of the Mykle region in the southern part of the Oslo igneous province, Norway. Norges geologiske...Bulletin 441, 17–24. The granites exposed around lake Mykle constitute two discrete massifs. The western...about 75 % of the area of the Oslo Rift of southern Norway (Oftedahl 1978). Granites make up about 20% of...can be observed at Eidanger, about 30 km south of Mykle (unpublished observation), represents the southernmost | | | Journal (article/letter/editorial) | University of Oslo, P.O. Box 1047 Blindern, N-0316 Oslo, Norway School of Earth & Environmental Sciences, University...fibrous, cryptocrystalline silica. Secondary stilpnomelane has also been indentified in these alteration...fine-grained alteration product intergrown with stilpnomelane, chlorite, ferric oxide, silica and carbonate...PI = 0.94 to 0.96. The presence of secondary stilpnomelane and other alteration products after sodic pyroxene...alteration. Replacement of sodic pyroxene by stilpnomelane + ferric oxide/hydroxide + silica would involve |
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