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Cristobalite Authigenic Origin in Relation to Montmorillonite and Quartz Origin in Bentonites
Cristobalite Authigenic Origin Montmorillonite Quartz Origin
2012/2/20
Three kinds of opal-cristobalite, differentiated by the sharpness of the 4·1 Å XRD peak, were isolated from the Helms (Texas) bentonite by selective chemical dissolution followed by specific gra...