Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Cordierite from
Sponda Alp - Pizzo Forno, Chironico Valley, Faido, Leventina, Ticino, Switzerland


Locality type:Mountain
Classification
Species:Cordierite
Formula:Mg2Al4Si5O18
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Cordierite data
Locality Data:Click here to view Sponda Alp - Pizzo Forno, Chironico Valley, Faido, Leventina, Ticino, Switzerland
Data Identifiers
Mindat Occurrence Record ID:537679
Long-form Identifier:1:3:537679:7
GUID (UUID V4):0
Nearest other occurrences of Cordierite
13.6km (8.5 miles) ⓘMiregn, Personico, Leventina, Ticino, Switzerland
33.6km (20.9 miles) ⓘCrodolo Valley, Brissago, Locarno, Ticino, Switzerland
35.7km (22.2 miles) ⓘRebolgin Valley, Lostallo, Moesa Region, Grisons, Switzerland
41.7km (25.9 miles) ⓘCuriglia, Curiglia con Monteviasco, Varese Province, Lombardy, Italy
56.1km (34.8 miles) ⓘDervio-Colico road tunnel, Dorio, Lecco Province, Lombardy, Italy
57.0km (35.4 miles) ⓘCandoglia marble quarries, Candoglia, Mergozzo, Verbano-Cusio-Ossola Province, Piedmont, Italy
59.0km (36.7 miles) ⓘCasnaggina Valley, Castasegna, Upper Val Bregaglia, Bregaglia, Maloja Region, Grisons, Switzerland
59.8km (37.2 miles) ⓘCasnaggina Valley, Villa di Chiavenna, Sondrio Province, Lombardy, Italy
59.9km (37.2 miles) ⓘMont'Orfano (Montorfano), Mergozzo, Verbano-Cusio-Ossola Province, Piedmont, Italy
60.8km (37.8 miles) ⓘCodera streambed, Codera Valley, Novate Mezzola, Sondrio Province, Lombardy, Italy
References
Stalder, Hans Anton; Wagner, Albert; Graeser, Stefan; Stuker, Peter (1998) Mineralienlexikon der Schweiz. Wepf Verlag. 579pp.p.122
Redler, Charlotte, Irouschek, Alfred, Jeffries, Teresa, Gieré, Reto (2016) Origin and Formation of Tourmaline-rich Cordierite-bearing Metapelitic Rocks from Alpe Sponda, Central Alps (Switzerland) Journal of Petrology, 57 (2) 277-308 doi:10.1093/petrology/egw006
 
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