| | Description | |
| Comments: | A.E. Nordenskiøld identify "hydrargillite" (gibbsite) from the southern part of this island as the first find in Norway. | | Quality of samples: | not specified / average specimens | | Confirmation | |
| Validity: | Believed Valid | | References | |
| References: | Brøgger, W.C. (1890): Die Mineralien der Syenitpegmatitgänge der südnorwegischen Augit-und Nephelinsyenite. Zeitschrift für Kristallographie und Mineral.16. p. 16); Neumann (1985, p. 86).; Andersen, F.,Berge, S.A. & Burvald, I. (1996): Die Mineralien des Langesundsfjords und des umgebenden Larvikit-Gebietes, Oslo-Region, Norwegen. MineralienWelt 7(4):21-100 | | Data | |
| Mineral Data: | Click here to view Gibbsite data | | Locality Data: | Click here to view Eikaholmen, Langesundsfjorden, Larvik, Vestfold, Norway |
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