Millstatt lake ridge, Carinthia, Austria

East of a line which approximately runs along the Lieser river valley, across Millstatt lake and down the lower Afritz stream valley, the older alpine rocks ('Altkristallin') are covered by upper palaeozoic rocks ('Gurktaler Decke'), mainly metavolcanites, phyllites, schists, siliceous schists, marbles and dolomites.
The Millstatt ridge ('Millstätter Seenrücken'), a low mountain range to the northeast of the Drau river valley, southeast of Spittal, is situated on the geological boundary between these areas. It is relatively rich in both pegmatites (sometimes enriched in P) and mineralized clefts. To the east and southeast, it is joined by the Afritz Mts ('Afritzer Berge').

References:
- LUECKE, W. & UCIK, F.H. (1986): Die Zusammensetzung der Pegmatite von Edling und Wolfsberg bei Spittal/Drau (Kärnten) im Rahmen der Pegmatitvorkommen des Millstätter See-Rückens. Arch. f. Lagerst.
forsch. Geol. B.-A., 7, 173-187.
- UCIK, F.H. (1995): Pegmatite und junge Gänge. Beitragsband zur Kärntner Landesausstellung 1995 "Grubenhunt & Ofensau".
- G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
- TRENNER, S. (1996): Die Minerale aus den Pegmatitvorkommen des Millstätter Seenrückens, Kärnten. Diplomarbeit Univ. Graz, 116 pp.
- Walter, F. (1998): Exkursion E4 am 27.9.1998 - MinPet 98 (Pörtschach am Wörthersee/Kärnten) - Die Pegmatite des Millstätter See-Rückens. Mitt. Österr. Mineral. Ges. 143, 437-450. http://www.uibk.ac.at/mineralogie/oemg/bd_143/143minpet98_437-450.pdf]