Large areas of Italian territory are covered by thick and widespread deposits of zeolite-bearing volcaniclastic products. The main zeolites are phillipsite and chabazite spread over the whole peninsula, and clinoptilolite recorded only in Sardinia. A trachylic to phonolitic glassy precursor accounts for the formation of the former zeolites characterized by low Si/Al ratios (≤3.00), while clinoplilolite is related to more acidic volcanism. The genesis of most of these zeolitized deposits is linked to pyroclastic flow emplacement mechanisms characterized by quite high temperatures and by the presence of abundant fluids. The main utilization of these materials has been and still is as dimension stones in the building industry. Currently, limited amounts are also employed in animal farming (dietary supplement, pet litter and manure deodorizer) and in agriculture as soil improvement and slow-release fertilizers. New fields of application have been proposed for these products on account of their easy availability, very low cost, their high-grade zeolites (50-70%), and good technological features such as high cation exchange capacities and adsorption properties.

Italian zeolitized rocks of technological interest / Langella, Alessio; De'Gennaro, Maurizio. - In: MINERALIUM DEPOSITA. - ISSN 0026-4598. - 31:(1996), pp. 452-472. [10.1007/BF00196127]

Italian zeolitized rocks of technological interest

Alessio Langella;Maurizio de'Gennaro
1996

Abstract

Large areas of Italian territory are covered by thick and widespread deposits of zeolite-bearing volcaniclastic products. The main zeolites are phillipsite and chabazite spread over the whole peninsula, and clinoptilolite recorded only in Sardinia. A trachylic to phonolitic glassy precursor accounts for the formation of the former zeolites characterized by low Si/Al ratios (≤3.00), while clinoplilolite is related to more acidic volcanism. The genesis of most of these zeolitized deposits is linked to pyroclastic flow emplacement mechanisms characterized by quite high temperatures and by the presence of abundant fluids. The main utilization of these materials has been and still is as dimension stones in the building industry. Currently, limited amounts are also employed in animal farming (dietary supplement, pet litter and manure deodorizer) and in agriculture as soil improvement and slow-release fertilizers. New fields of application have been proposed for these products on account of their easy availability, very low cost, their high-grade zeolites (50-70%), and good technological features such as high cation exchange capacities and adsorption properties.
1996
Italian zeolitized rocks of technological interest / Langella, Alessio; De'Gennaro, Maurizio. - In: MINERALIUM DEPOSITA. - ISSN 0026-4598. - 31:(1996), pp. 452-472. [10.1007/BF00196127]
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/843041
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 70
  • ???jsp.display-item.citation.isi??? 66
social impact