Lanzo Valleys, Metropolitan City of Turin, Piedmont, Italy
Val d'Ala, Valli di Lanzo, Torino, Piemonte, Italia
Key Information
Do not enter mining areas without proper authorization.
The Ala Valley is in northwest Italy, part of the Piedmont region, about 35 kilometers northwest of Turin, in the Graian Alps.
It is known for minerals like vesuvianite, diopside, and epidote, with unique occurrences in rodingite dikes.
The geological structure includes metamorphic rocks, formed through Alpine orogeny processes.
Mining history dates back to the 19th century, with some sites now closed due to extensive collecting.
Local culture features alpine traditions, with specialties like Toma cheese, and the valley is a hub for mountaineering.
The climate is alpine, with cold winters and mild summers, influencing mineral preservation.
Geographic Location
Nestled in the heart of the Graian Alps, the Ala Valley is one of the three Lanzo Valleys, located in the Metropolitan City of Turin, Piedmont, Italy. It lies approximately 35 kilometers northwest of Turin, making it a scenic escape into the mountains. The valley is bordered by the Valle dell'Orc to the north and the Val di Susa to the south, offering breathtaking views and proximity to famous alpine peaks. Nearby, mineral enthusiasts might explore the Valle di Viù and Val Grande, both part of the Lanzo Valleys, known for their own mineral riches.
Minerals Produced
The Ala Valley is a treasure trove for mineral collectors, particularly noted for its rodingite dikes that yield stunning specimens. Standout minerals include vesuvianite, often gem-quality with colors ranging from yellow to green, diopside (the type locality being Roch Neir and Testa Ciarva at Pian della Mussa, Balme), epidote, clinochlore, and garnet. These uncommon minerals, especially vesuvianite, have been showcased in museums worldwide, making the valley a must-visit for enthusiasts seeking unique finds.
Geological Structure
The valley's geology is dominated by metamorphic rocks, a result of the intense Alpine orogeny. Rodingite dikes, associated with serpentinite, are key features, formed through the metamorphism of oceanic crust. This process created the conditions for the rich mineral veins, with minerals like vesuvianite and diopside crystallizing in fractures, offering a glimpse into the dynamic geological history of the region.
Mining History
Mining in the Ala Valley began in the 19th century, with sites like Testa Ciarva becoming famous for their mineral yields. Operations, including the Radis Alp Mine, ran from 1823 to 1869, focusing on iron and other minerals. Many areas, like Testa Ciarva, are now closed to collecting due to past intensive activity, preserving the remaining specimens for future generations. The valley's history is intertwined with local mountaineering, attracting enthusiasts who discovered its mineral wealth.
Local Culture and Characteristics
The Ala Valley embodies alpine culture, with traditions rooted in mountaineering and pastoral life. Local specialties include Toma cheese, breadsticks, and torcetti, reflecting the region's culinary heritage. The valley is also a historic cradle of Italian mountaineering, with connections to Turin’s climbing history, and features shrines like Saint Christina, offering panoramic views and cultural significance.
Climate and Ecology
With its alpine setting, the Ala Valley experiences cold, snowy winters and mild summers, typical of high-altitude environments. This climate influences mineral preservation, with weathering processes affecting exposure. The ecology is diverse, featuring chestnut and beech woods at lower elevations, transitioning to larch woods and alpine meadows higher up, with glaciers like Pian della Mussa adding to the scenic beauty and ecological richness.
Citations
- Ceres, Piedmont - Wikipedia
- Lanzo Valleys - Wikipedia
- Ala Valley, Lanzo Valleys, Metropolitan City of Turin, Piedmont, Italy
- The Vesuvianite Gems of the Val d’Ala (Piedmont, Italy)
- Radis Alp Mine, Ala di Stura, Metropolitan City of Turin, Piedmont, Italy
- The territory - Turismo nelle Valli di Lanzo
- Lanzo valleys, Ceronda and Casternone | Turismo Torino e Provincia
- Lanzo Trekking
- Aosta Valley - Wikipedia
- Turismo nelle Valli di Lanzo | Val d'Ala
- MINERALI IN ITALIA - Località mineralogiche d'Italia