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Druntobel (Drun Tobel; Drun Sedrun; Krüzli valley; Kreuzli pass; Ruinas Plaunas), Sedrun, Tujetsch (Tavetsch), Vorderrhein Valley, Grischun (Grisons; Graubünden), Switzerland

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Latitude & Longitude (WGS84): 46° 41' 25'' North , 8° 46' 29'' East
Latitude & Longitude (decimal): 46.69028,8.77472
Other regions containing this locality:The Alps, Europe
Köppen climate type:ET : Tundra
Name(s) in local language(s):Druntobel (Drun Tobel; Drun Sedrun; Krüzlital; Krüzlithal; Kreuzlipass; Ruinas Plaunas), Sedrun, Tujetsch (Tavetsch), Vorderrheintal, Graubünden (Grisons; Grischun), Schweiz (Suisse; Svizzera)

A narrow and steep erosion gorge north of Sedrun, which leads up to the locality "Cuolm da Vi".
Clefts in amphibolite and gneiss.

The type locality of "Sphene" (Hauy, 1801).

NOTE: The grid reference is centered on the area.

Mineral List

21 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


ID: 2364551
Metamorphe Gesteine, meist Metamagmatite

Age: Anthropocene ( Ma)

Lithology: Amphibolite

Reference: Geological Institute. Geological Map of Switzerland 1:500,000. isbn: 3906723399. University of Bern. [49]

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

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.


Weibel, M. (1957): Über Titanit von Graubünden. Untersuchungen an Kristallen von der Muotta Naira und vom Tobel Drun. Contributions to Mineralogy and Petrology 5, 373-378 (in German).

Jahn, S. (2008): Der Druntobel bei Sedrun - ein weltbekannter Fundort. Mineralien-Welt, 19 (3), 42-67 (in German).

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