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Information Journal Paper

Title

MINERALOGICAL AND GEOCHEMICAL STUDIES ON RODINGITES OF NAIN OPHIOLITE

Pages

 Start Page 87 | End Page 100

Abstract

 Two types of rodingitization (static and dynamic) are observed in the RODINGITEs of the ophiolite in the North Of Nain. Two stages have occurred in the formation of static RODINGITEs. In the initial stage, epidote, prehnite and hydrogrossular have crystallized respectively, at the expense of plagioclase, with the increase of calcium content RODINGITE forming fluid. In the advanced stage, xonotlite in the expense of plagioclase, and Mg chlorite, tremolite and secondary diopside, at the expense of pyroxene, have been formed simultaneously with an increase of Si content of RODINGITE forming fluid. During rodingitization, the Ca and OR content, have increased, whereas the amounts of K, Al and Na are reduced. Mn, Fe and Mg values are slightly reduced but Si remains constant.

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