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Gonzen Mine, Sargans, Alvier Group, St Gallen, Switzerland

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View of the Gonzen iron mine, Switzerland, 1921.

Gonzen Mine, Sargans, Alvier Group, St Gallen, Switzerland
View of the Gonzen iron mine underground workings, ca. 1921.

Gonzen Mine, Sargans, Alvier Group, St Gallen, Switzerland
Latitude & Longitude (WGS84): 47° 4' 3'' North , 9° 26' 2'' East
Latitude & Longitude (decimal): 47.06750,9.43389
Other regions containing this locality:The Alps, Europe
Köppen climate type:Cfb : Temperate oceanic climate
Name(s) in local language(s):Grube Gonzen, Sargans, Alvier-Gruppe, St Gallen, Schweiz (Suisse; Svizzera)

Ancient Fe-Mn mine, abandoned in 1966.

Swiss coordinates for Gonzen Mt. (1829 m) are 751´545 / 214´870.

Mineral List

21 valid minerals. 1 (TL) - type locality of 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

Late Jurassic
145 - 163.5 Ma

ID: 2355086
Biogene Sedimentgesteine und Evaporite

Age: Jurassic (145 - 163.5 Ma)

Lithology: Biogenic carbonate rocks and evaporite

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

145 - 201.3 Ma

ID: 3185222
Mesozoic sedimentary rocks

Age: Jurassic (145 - 201.3 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

252.17 - 298.9 Ma

ID: 3131118
Helvetic nappes, Verrucano

Age: Permian (252.17 - 298.9 Ma)

Description: low grade metamorphic

Lithology: Sandstone

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

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.


Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
- Epprecht, W. (1946) Die Eisen- und Manganerze der Gonzen. Beiträge zur Geologie der Schweiz, Geotechnische Serie 24.
- Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 245.
- Pfeifer, H. R.; Oberhänsli, H.; Epprecht, W. (1988): Geochemical evidence for a synsedimentary hydrothermal origin of Jurassic iron-manganese deposits at Gonzen (Sargans, Helvetic Alps, Switzerland). Marine Geology 84, 257-272.
- Roth, P. & Meisser, N. (2013): Die seltenen Mineralien der Bündner Manganvorkommen. Schweizer Strahler 47 (3), 8-21 (in German and French).

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