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Quartz from
Porretta quartz sites, Porretta Terme, Alto Reno Terme, Reno Valley, Bologna Province, Emilia-Romagna, Italy

Classification
Species:Quartz
Formula:SiO2
Quality for species:Excellent - world class for species or very significant. (!!)
Confirmation
Validity:Believed Valid
References
References:Gambari, L. (1868) Descrizione dei quarzi di Porretta. Atti della Società dei naturalisti e matematici di Modena, 3, 1-19; Bombicci, L. (1869) La collezione dei cristalli di quarzo aeroidro di Porretta. Memorie della R. Accademia delle Scienze dell'Istituto di Bologna, serie 2, 9, 56-60; Bombicci, L. (1874) Descrizione della mineralogia generale della provincia di Bologna. Seconda parte. Memorie della R. Accademia delle Scienze dell'Istituto di Bologna, serie 3, 5, 105-222; Jervis, G. (1874) I tesori sotterranei dell'Italia. Vol. 2: Regione dell’Appennino e vulcani attivi e spenti dipendentivi. Ermanno Loescher, Torino, XVIII+624 pp.; Chamberlin, R. T. (1908) The gases in rocks. Carnegie Institute of Washington, Publication 106, page 41; De Michele, V. (1974) Guida mineralogica d'Italia. Istituto Geografico De Agostini, Novara, 2 vol., 408 pp.; Mullis, J. (1988) Rapid subsidence and upthrusting in the Northern Apennines, deduced by fluid inclusion studies in quartz crystals from Poretta Terme. Schweizerische Mineralogische und Petrographische Mitteilung, 68, 157-170; Bargossi, G.M., Gamberini, F., Gasparotto, G., Grillini, G.C., Marocchi, G. (2004) Dimension and ornamental stones from the Tosco-Romagnolo and Bolognese Apennine. Periodico di Mineralogia, 73, Special Issue 3, 171-195; Castagliola, P., Cipriani, V., Pratesi, G., Niedermayr, G. (2006) Die 'Quarz-Diamanten' aus dem Apennin in Italien (Toskana und Emilia Romagna). Mineralien-Welt, 17, 2, 58-66.
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Porretta quartz sites, Porretta Terme, Alto Reno Terme, Reno Valley, Bologna Province, Emilia-Romagna, Italy
Localities for Quartz in this Region
Della Costa Quarry, Porretta quartz sites, Porretta Terme, Alto Reno Terme, Reno Valley, Bologna Province, Emilia-Romagna, Italy
Porettana Railway tunnels and cuts, Porretta quartz sites, Porretta Terme, Alto Reno Terme, Reno Valley, Bologna Province, Emilia-Romagna, Italy
Rio Maggiore, Porretta quartz sites, Porretta Terme, Alto Reno Terme, Reno Valley, Bologna Province, Emilia-Romagna, Italy
Mineral and/or Locality  
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