- Cabinet, 11.4 x 7.8 x 5.4 cm
- Lusens valley (Lisens valley; Lusens alp; Lisens alp), Sellrain valley, North Tyrol, Tyrol, Austria
An old-time Alpine specimen (from the Tyrolean Alps in Austria, not Swiss) of blocky, rectangular, translucent crystals of andalusite (part of the sillimanite group (Al2SiO5 = AlAlOSiO4). The crystals are embedded in grey graphite schist. Frequently, these crystals show a cross-shaped pattern of light and dark inside. This locality in the Alps is known as a classic locality for andalusite.