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![](./images/clear.gif) 1.- ORCELITE AND ASSOCIATED MINERALS IN THE NI-FE-AS-S SYSTEM IN CHROMITITES AND ORTHOPYROXENITES OF NEBRAL, MALAGA, SPAIN;
1980
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![](./images/clear.gif) 2.- OSCILLATORY ZONING OF A DISCONTINUOUS SOLID-SOLUTION SERIES: SPHALERITE-STANNITE
1980
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