New min. Si/Al and max. (Ca, Mg)/(K, Na) ratios (3.78 and ∼2, resp.) were obsd. for clinoptilolite [12173-10-3] during the thermal and chem. analyses of 5 sedimentary minerals of the heulandite [1318-63-4] family. A reexamn. of published heulandite analyses demonstrates the existence of natural Ca-rich clinoptilolites.
Natural Ca-rich clinoptilolites (heulandites of group 3): new data and review / Alietti, Andrea; Brigatti, Maria Franca; Poppi, Luciano. - In: NEUES JAHRBUCH FUR MINERALOGIE MONATSHEFTE. - ISSN 0028-3649. - STAMPA. - H11:(1977), pp. 493-501.
Natural Ca-rich clinoptilolites (heulandites of group 3): new data and review
ALIETTI, Andrea;BRIGATTI, Maria Franca;POPPI, Luciano
1977
Abstract
New min. Si/Al and max. (Ca, Mg)/(K, Na) ratios (3.78 and ∼2, resp.) were obsd. for clinoptilolite [12173-10-3] during the thermal and chem. analyses of 5 sedimentary minerals of the heulandite [1318-63-4] family. A reexamn. of published heulandite analyses demonstrates the existence of natural Ca-rich clinoptilolites.
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