Diabase quarry, Biberg Mt. (Bieberg Mt.), Saalfelden, Salzburg, Austria

Located SW of Saalfelden.
In the 1980s collecting was forbidden.

Owned by STRABAG company.
Currently (2009) a tunnel is driven (at an inclination of about 28°) up the mountain to gain underground access to two large diabase lenses higher up on the mountain. These lenses, and additionally metasandstones and metagreywackes, will be exploited in a large open-pit quarrying operation and the rock material will be transported through the tunnel down to the processing plant.
The quarry will be closed and backfilled starting sometime in 2010.

References:
- Strasser, A. (1966): Axinit und andere Mineralien vom Diabasbruch bei Saalfelden, Salzburg. Der Aufschluss, 17 (4), 99-101.
- Fischer, T. (1978): Der Diabasbruch Saalfelden. Lapis, 3 (8), 15.
- Lechler, A. (1985): Forum: Aktuelle MM-Fundstellen in Österreich (Biberg). Emser Hefte, Nr.2, 22.
- Berg, I. (1985): Neue Mineralien vom Biberg bei Saalfelden. Lapis, 10 (3), 35.
- Lapis Redaktion (1985): Lapis Aktuell: Sammelverbot am Biberg bei Saalfelden, Österreich. Lapis, 10 (7), 5.
- Hochleitner, R. (1986): Lapis Aktuell: Sammelverbot am Biberg bei Saalfelden. Lapis, 11 (3), 4.
- A. Strasser: Die Minerale Salzburgs (1989)

- http://www.diabas.at/
- http://www.geologie.ac.at/filestore/download/AL0005_105_A.pdf