粘土科学討論会講演要旨集
Online ISSN : 2433-0582
Print ISSN : 2433-0566
ISSN-L : 2433-0566
43th Annual Meeting of The Clay Science Society of Japan
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P3 CLAY MINERALOGY OF THE BENTONITE DEPOSIT IN BALAMBAN, CEBU PROVINCE, PHILIPPINES
Dennis Gerald A. AletaKatsutoshi TomitaMotoharu Kawano
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p. 130-131

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Bentonite deposit occurs as lenticular or podiform beds interstratified within the Middle Miocene Toledo Formation, in Balamban, Cebu Province, Philippines. Some selected bentonite samples collected from available field outcrops were examined using x-ray diffraction (XRD), differential thermal analysis (DTA), thermogravimetric (TG), scanning electron microscopy (SEM), infrared (IR) and electron diffraction x-ray (EDX) analytical techniques. Laboratory data and results yield that the clay constitution of the bentonite is principally smectite minerals. Some samples also indicate interstratified kaolinite/smectite. Kaolin and zeolite (probably clinoptilolite) are associated in minor amount. The non-phyllosilicates assemblage is dominantly of crystalline quarts, feldspar and calcite.
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© 1999 The Clay Science Society of Japan
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