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Keywords: mineral composition
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Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-198
... at exploring the possible microscopic characteristics, including mineral composition, grain contact and pattern of fracture propagation, which may result in wetting softening of sandstone. EXPERIMENT CONCEPT In order to understand the mechanism of sandstone s wetting softening, this research performs two types...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-039
...-porphyry is kept as its original form, but the mineral composition has an essen- tial change. In exception of hornblende and volcanic glass, all porphyritic crys- tal and matrix of feldspars become para- ffinwise clay material. The mineral com- position of clay fraction<C2pis proved to Ile Ca.Mg...

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