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Orthoclase from
Mont'Orfano (Montorfano), Mergozzo, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont, Italy

Classification
Species:Orthoclase
Formula:K(AlSi3O8)
Confirmation
Validity:Believed Valid
References
References:Strüver G. (1866): Minerali dei graniti di Baveno e di Montorfano. Atti R. Acc. Sci. Torino, 1, 395-397; Jervis G. (1873): I tesori sotterranei dell'Italia. Vol. 1: Regioni delle Alpi. Ed. Loescher, Torino, 410 pp.; Leuze A. (1892): Mineralogische Notizen. In: Bericht über die 25. Versammlung des oberrheinischen geologischen Verains zu Basel am 21. April 1892. Druck von Alfred Müller & Co., Stuttgart, pages 20-33; Gallitelli P. (1938): Ricerche petrografiche sul Montorfano (Lago Maggiore). Mem. R. Acc. Sci. Lett. Arti Modena, 3, 1-92; Scaini G. (1939): Itinerari mineralogici. Comune di Mergozzo. Località: cave di granito bianco di Mont’Orfano. Natura, 30, 3, 155-159; Del Caldo A., Moro C., Gramaccioli C.M., Boscardin M. (1973): Guida ai minerali. Fratelli Fabbri Editori, Milano, 208 pp.; De Michele V. (1974): Guida mineralogica d'Italia. Istituto Geografico De Agostini, Novara, 2 vol., 408 pp.; Gramaccioli C.M. (1975): Minerali alpini e prealpini. Istituto Italiano Edizioni Atlas, Bergamo, 2 vol., 472 pp.; Piccoli G.C., Maletto G., Bosio P., Lombardo B. (2007): Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo), 607 pp.
Associated Minerals Based on Photo Data:
Quartz2 photos of Orthoclase associated with Quartz at this locality.
Zinnwaldite2 photos of Orthoclase associated with Zinnwaldite at this locality.
Data
Mineral Data:Click here to view Orthoclase data
Locality Data:Click here to view Mont'Orfano (Montorfano), Mergozzo, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont, Italy
Photo GalleryView Gallery (2 photos)
Nearest other occurrences of Orthoclase
2.8km (1.7 miles) Cirla Quarry (Monte Camoscio Quarry; Camoscio Quarry), Feriolo, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
3.3km (2.1 miles) Seula mine (ex Montecatini quarry), Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
3.6km (2.3 miles) Locatelli Quarry, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
8.2km (5.1 miles) Giacomini Quarry (Diverio Quarry; Bottigetto Quarry), Agrano, Omegna, Verbano-Cusio-Ossola Province, Piedmont, Italy
19.2km (11.9 miles) Beura quarries, Beura-Cardezza, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont, Italy
21.3km (13.2 miles) Rio Graia, Trontano, Vigezzo Valley, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont, Italy
23.9km (14.8 miles) I Mondei (Ca' Mondei), Montescheno, Antrona Valley, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont, Italy
32.3km (20.1 miles) Puricelli Quarry, Cuasso al Monte, Ceresio Valley, Varese Province, Lombardy, Italy
32.5km (20.2 miles) Laghetto Quarry, Cavagnano, Cuasso al Monte, Ceresio Valley, Varese Province, Lombardy, Italy
32.6km (20.3 miles) Gebel Quarry (Mantegazza Quarry; Subalpina Quarry; Bianchi Quarry), Cuasso al Monte, Ceresio Valley, Varese Province, Lombardy, Italy
 
Mineral and/or Locality  
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