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Köfels, Umhausen, Ötz valley, North Tyrol, Tyrol, Austria

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Latitude & Longitude (WGS84): 47° 14'' South , 10° 3'' East
Latitude & Longitude (decimal): 47.120477, 10.917594
Name(s) in local language(s):Köfels, Umhausen, Ötztal, Nordtirol, Tirol, Österreich

Landslide (8000 years ago), with ductile deformation at very high strain rate in a narrow shear zone: intense friction raised temperature to melting, leading to the formation of a pumiceous glass thin layer.
The glass resulted from friction thermometamorphism of biotite-amphibole gneisses and not from volcanism or shock.

Mineral List

Rock Types Recorded

Entries shown in red are rocks recorded for this region.

Note: this is a very new system on and data is currently VERY limited. Please bear with us while we work towards adding this information!

2 valid minerals.

The above list 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.


- European Journal of Mineralogy, 1993, 5, 893-902.

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