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Dreiser Weiher, Dreis, Daun, Eifel, Rhineland-Palatinate, Germany

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Latitude & Longitude (WGS84): 50° 15' 59'' North , 6° 46' 41'' East
Latitude & Longitude (decimal): 50.26639,6.77806
Köppen climate type:Cfb : Temperate oceanic climate
Name(s) in local language(s):Dreiser Weiher, Dreis, Daun, Eifel, Rheinland-Pfalz, Deutschland

Maar volcano,
Outcrops of basaltic lapilli tuffs with different types of xenoliths - ultrabasic ones (dunite, lherzolithe, pyroxenite, hornblendite), micaschist, metasomatite and carbonatite - in a small abandoned sand pit north of the road leading from Dreis to Hillesheim.
Located 500 m west of Dreis and about 8 km north of Daun.

Mineral List

Mineral list contains entries from the region specified including sub-localities

15 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on

393.3 - 407.6 Ma

ID: 2608852

Age: Early Devonian (393.3 - 407.6 Ma)

Description: marine deposits

Reference: Toloczyki, M., P. Trurnit, A. Voges, H. Wittekindt, A. Zitzmann. Geological Map of Germany 1:M. Bundesanstalt für Geowissenschaften und Rohstoffe. [94]

Data and map coding provided by, used under Creative Commons Attribution 4.0 License

Localities in this Region

  • Rhineland-Palatinate

This page contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


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Rammelsberg, C. (1870) Über den Olivinfels vom Dreiser Weiher. Annalen der Chemie und Physik, Vol. 217, 512-519.
Frechen, J. (1963) Kristallisation, Mineralbestand, Mineralchemismus und Förderfolge der Mafitite vom Dreiser Weiher in der Eifel. Neues Jahrbuch für Mineralogie, Monatshefte, 205-225.
Hörmann, P.K. (1966) Die Verteilung des Berylliums in den Mafititknollen des Dreiser Weihers (Eifel). Contributions to Mineralogy and Petrology 13, 374-388 (in German).
Aoki, K. and Kushiro, I (1968) Some clinopyroxenes from ultramafic inclusions in Dreiser Weiher, Eifel. Contributions to Mineralogy and Petrology, Vol. 18, pp 327-336.
Frechen, F. (1976) Siebengebirge am Rhein ... Maargebiet der Westeifel, Borntraeger (Berlin, Stuttgart).
Meyer, W. (1983) Geologischer Wanderführer: Eifel. Franckh'sche Verlangshandlung W. Keller & Co, Stuttgart.
Meyer, W. (1986) Geologie der Eifel. Schweizerbart (Stuttgart).
Blass, G., Emmerich, F., Graf, HW., Schäfer, Ch., and Tschörtner, J. (2006) Minerale der Eifelvulkane, CD, published by authors.

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