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![](./images/clear.gif) 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
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![](./images/clear.gif) 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
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