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Holzbrücken mill, Ingering valley, Knittelfeld, Styria, Austria

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Latitude & Longitude (WGS84): 47° 14' 0'' North , 14° 46' 32'' East
Latitude & Longitude (decimal): 47.23333,14.77556
Other regions containing this locality:The Alps, Europe
Köppen climate type:Dfb : Warm-summer humid continental climate
Name(s) in local language(s):Holzbrücken-Mühle, Ingeringtal, Knittelfeld, Steiermark, Österreich

Clefts in granite gneiss.

This locality, 5 km NW of Knittelfeld, at N47.23339 E14.77555 and N 47.23365 E14.77521 is well known since the middle of the 19th century.

It takes some perserverance, patience and luck to find a nice specimen, but they are still there. It is also worthwhile to search alongside and in the creek.
This locality is visited frequently by collectors.

Mineral List

6 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

Paleozoic - Proterozoic
252.17 - 2500 Ma

ID: 3131531
Ostalpines Kristallin

Age: to Permian (252.17 - 2500 Ma)

Description: undifferentiated metamorphic

Lithology: Gneiss

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]

Cambrian - Proterozoic
485.4 - 2500 Ma

ID: 3189284
Precambrian-Phanerozoic crystalline metamorphic rocks

Age: to Cambrian (485.4 - 2500 Ma)

Comments: Alps

Lithology: Crystalline metamorphic 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]

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)
Forcherit aus der Steiermark (1862) : Jahrbuch der k.k. geolog. Reichsanstalt 1861/1862, Sect, XII, p-65, 66.
Hatle, E. (1885) : Die Minerale des Herzogthums Steiermark, p.41.
Hatle, E. (1887) : Mineralogische Miscellaneen. In : Verhandlungen der k. k. Geologischen Reichsanstalt, Jahrgang 1887 Band 4, p.130.
Alker, A. 1957 : Zur Mineralogie der Steiermark V Seethaleralpen - Murauer Berge, Datensammlung
Metz, R. (1972) : Forcherit vom Ingeringtal. In : Zur Mineralogie und Geologie der Steiermark. 22. Sonderheft der Zeitschrift „Der Aufschluss“, p.27, 28.
Weninger, H. (1976 ): Mineral-Fundstellen Band 5 : Steiermark und Kärnten. p. 62 - 64.
Exel, R (1993): Die Mineralien und Erzlagerstätten Österreichs.
Bojar, H.-P. & Taucher, J. (1994): 659: Arsenolith, Realgar und Auripigment im "Forcherit" vom Ingeringgraben bei Knittelfeld, Steiermark. In: Niedermayr, G. et al. (1994): Neue Mineralfunde aus Österreich XIIIL. Carinthia II, 184/104, 265-266.
Bojar, H.-P. & Taucher, J. (1995): 996: Pharmakosiderit von der "Forcheritfundstelle" im Ingeringgraben bei Knittelfeld, Steiermark. In: Niedermayr, G. et al. (1995): Neue Mineralfunde aus Österreich XIVL. Carinthia II, 185/105, 163.
Gaillou E. (2006) : Relations entre nanostructure, propriétés physiques et mode de formation des opales A et CT. p. 85.

External Links (Alker, A. 1957 : Zur Mineralogie der Steiermark V Seethaleralpen - Murauer Berge, Datensammlung) (Metz, K. Bericht über Arbeiten im Rahmen des Scheelitprojektes 1977/1978) (Éloïse Gaillou 2006 Relations entre nanostructure, propriétés physiques et mode de formation des opales A et CT. p. 85

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