Morso Alto Mine, Rossiga Valley, Cortenova, Valsassina, Lecco Province, Lombardy, Italyi

Regional Level Types
Morso Alto Mine	Mine (Abandoned)
Rossiga Valley	- not defined -
Cortenova	- not defined -
Valsassina	Valley
Lecco Province	Province
Lombardy	Region
Italy	- not defined -

Cortenova is a comune (municipality) in the Province of Lecco in the Italian region Lombardy, located about 60 kilometres northeast of Milan and about 15 kilometres north of Lecco. As of 31 December 2004, it had a population of 1,285 and an area of 11.6 square kilometres .
In 1802 Giuseppe Fumeo emphasized a lead mine in Val Rossiga at Cortenova,
this mine was exploited for several years, mainly for extracting the Lead.

The Rossiga Valley hosts three main lodes up to 60 cm thick and mineralized principally by argentiferous galena, along with by several subordinate veins. The mineralization is hosted within the basement, inside the San Biagio Granite and at the contact between the basement and the granite. Massive sphalerite is commonly present with galena, subordinate chalcopyrite and accessory pyrite. The gangue is mainly quartz, with locally abundantly baryte and siderite. The mineralized veins can be divisible in two groups: Traversa and Morso lodes. Coarse-grained achantite and pyrargyrite are also observable as accessory minerals in the Traversa veins. The secondary assemblage consists only of few Zn- and Pb-bearing carbonates and sulfates. In the Traversa Valley, disseminated sulfide mineralization is also present inside the granite, very similar to that observed at Prato San Pietro. Other veins with the same mineralogical composition of Morso and Traversa lodes, object of excavations, are observable in the ancient mining areas of Piale and Piauletto, below Morso Basso Alp, as well as above Bindo, in the San Biagio Valley and in the areas below Sasso Dirotto and Ombrega alp (Marcia Valley).

I G M Cartografy F. 17 II S.E.

Other Regions, Features and Areas containing this locality

References