1. Differential weathering of volcanic ash and pumice resulting in the formation of hydrated halloysite;Aomine;Am. Mineral.,1962
2. Petrogenesis of potassium-rich lavas from the Roccamonfina Volcano, Roman Region, Italy;Appleton;J. Petrol.,1972
3. Calculated powder patterns, II. Six potassium feldspars and a barium feldspar;Borg;Am. Mineral.,1969
4. Weathering and authigenic halloysite in soil developed in Mazama ash;Dudas,1975
5. Recognition of imogolite structures in allophanic clays by infrared spectroscopy;Farmer;Clay Miner.,1977