Crystal chemistry of Fe-Mg-carpholites |
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| Authors: | K. Viswanathan E. Seidel |
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| Affiliation: | (1) Mineralogisch-Petrographisches Institut der Technischen Universität, Gauss-Straße 28/29, D-3300 Braunschweig, Germany |
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| Abstract: | A chemical and X-ray investigation of the Fe-Mg-carpholites of Crete/Greece reveals a large variation in their Fe2+/(Fe2++Mg) ratios (0.68 to 0.05). The lattice constants a and b depend linearly on this parameter, and the magnitude of the effect is comparable to that encountered in pyroxenes. The similar behaviour of the lattice dimensions of both these minerals is explained by comparing their structures and pointing out the salient crystal chemical similarities. |
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