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1.- A UNIQUE OCCURRENCE OF SELENITE IN GEODES OF BASALTS FROM RIO GRANDE DO SUL STATE, BRAZIL [INTERNATIONAL GEOLOGICAL CONGRESS]; [LOCATION VARIES]; III; INTERNATIONAL, 2000 BRAZIL 2000; 31ST INTERNATIONAL GEOLOGICAL CONGRESS; ABSTRACTS VOLUME Ver registro
2.- THE CHEMICAL SIGNATURE OF EMERALDS FROM THE CAMPOS VERDES-SANTA TEREZINHA MINING DISTRICT, GOIAS, BRAZIL GEMMOLOGICAL ASSOCIATION AND GEM TESTING LABORATORY OF GREAT BRITIAN; LONDON; GBR; UNITED KINGDOM, 1998 Ver registro
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