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Tourmaline from
Sommafiume pegmatitic dyke (Alpe Sommafiume; Marategno Mine), Dorio, Lecco Province, Lombardy, Italy

Locality type:Dike
Classification
Species:'Tourmaline' (not an IMA approved species)
Formula:A(D3)G6(Si6O18)(BO3)3X3Z
Confirmation
Validity:Believed Valid
References
References:- Del Caldo, A., Moro, C., Gramaccioli, C.M., Boscardin, M. (1973): Guida ai Minerali. Fratelli Fabbri, Ed., Milano, 208 pp.; Gramaccioli, C.M., Scaini, G., Gentile, P., De Michele, V., Mannucci, G. (1992): Natura in Lombardia. I Minerali. Regione Lombardia, Ed., Milano, 223 pp.
Data
Mineral Data:Click here to view Tourmaline data
Locality Data:Click here to view Sommafiume pegmatitic dyke (Alpe Sommafiume; Marategno Mine), Dorio, Lecco Province, Lombardy, Italy
Nearest other occurrences of Tourmaline
3.4km (2.1 miles) Malpensata pegmatitic dyke (Olgiasca-Malpensata; Croce Quarry; Secondi dyke), Piona Peninsula, Colico, Lecco Province, Lombardy, Italy
39.4km (24.5 miles) Pizzi dei Piani (Piz di Pian), Madesimo, Spluga Valley (San Giacomo Valley), Valchiavenna, Sondrio Province, Lombardy, Italy
43.4km (26.9 miles) Gebel Quarry (Mantegazza Quarry; Subalpina Quarry; Bianchi Quarry), Cuasso al Monte, Varese Province, Lombardy, Italy
43.4km (27.0 miles) Laghetto Quarry, Cavagnano, Cuasso al Monte, Varese Province, Lombardy, Italy
47.7km (29.6 miles) Lake Grevasalvas, Julier pass area, Bivio, Oberhalbstein (Surses; Sursass), Albula Valley, Grisons, Switzerland
57.8km (35.9 miles) Sponda Alp - Pizzo Forno, Chironico Valley, Leventina, Ticino, Switzerland
58.6km (36.4 miles) Camperio, Santa Maria Valley, Blenio Valley, Ticino, Switzerland
70.9km (44.1 miles) Seula mine (ex Montecatini quarry), Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
71.1km (44.2 miles) Locatelli Quarry, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
71.9km (44.7 miles) Muotta Naira (Muota Naira; Motta Naira; Muota Nera), Piz Lai Blau, Nalps Valley, Tujetsch (Tavetsch), Vorderrhein Valley, Grisons, Switzerland
 
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