Graulahnerkopf Mt. (Graulahnerkogel Mt.), Amerbach valley, Felben valley, Hohe Tauern Mts, Salzburg, Austria

On the western slopes of Graulahnerkopf mountain, a quartzite-phosphate lens carrying abundant lazulite and minor decomposed wagnerite is exposed, which is believed to be of pegmatitic origin. Its orientation is perpendicular to the roughly N-S running ridge that geographically separates the Felben valley from the Stubach valley, and in its eastern extension, in screes on the eastern slopes of the mountain (located in the Stubach valley), boulders including a similar mineralisation were found.
Other minerals were recovered from clefts in amphibolites and in serpentinites, the latter near the summit.

Ref.:
- A. Strasser: Die Minerale Salzburgs (1989)
- Bernhard, F. & Postl, W. (2004): 1371: Rutil, Florencit-(Ce), Xenotim-(Y) und Crandallit vom Lazulithvorkommen am Graulahnerkogel, Granatspitzgruppe, Hohe Tauern, Salzburg. In: Niedermayr, G. et al. (2004): Neue Mineralfunde aus Österreich LIII. Carinthia II, 194/114, 235-236.