Zobrazeno 1 - 4
of 4
pro vyhledávání: '"Dwight R. Soares"'
Publikováno v:
Anais da Academia Brasileira de Ciências, Vol 79, Iss 3, Pp 395-404 (2007)
Gahnite electron probe microanalyses from three pegmatites (Mirador, Capoeira and Quintos) of the Borborema Pegmatitic Province in northeastern Brazil allowed to determine molar compositions ranging from 86.22 to 95.41 mol% gahnite (ZnAl2O4), 1.51 to
Externí odkaz:
https://doaj.org/article/5dbf2372993145b88c1f63abc8693442
Publikováno v:
Anais da Academia Brasileira de Ciências, Vol 77, Iss 4, Pp 729-743 (2005)
The Alto Quixaba pegmatite, Seridó region, northeastern Brazil, is a 60º/80ºSW-trending subvertical dike discordantly intruded into biotite schists of the Upper Neoproterozoic Seridó Formation. It has three distinct mineralogical and textural zon
Externí odkaz:
https://doaj.org/article/435508ff686245949016049c106928dd
Publikováno v:
Anais da Academia Brasileira de Ciências, Vol 77, Iss 1, Pp 169-182 (2005)
Tantalate samples, supposedly of the columbite group, were collected in the Borborema Pegmatitic Province, aiming to test the Mn/(Mn+Fe) and Ta/(Ta+Nb) ratios as geochemical indicators of pegmatite fractionation. Surprisingly, preliminary microprobe
Externí odkaz:
https://doaj.org/article/c62e42cd876e449e833124aa2be28d62
Publikováno v:
NGF Abstracts and Proceedings
PEG 2017-8th International Symposium on Granitic Pegmatites#
PEG 2017-8th International Symposium on Granitic Pegmatites#
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::5cc3d23e09a97477db187c8d405fa561
https://gfzpublic.gfz-potsdam.de/pubman/item/item_2305903
https://gfzpublic.gfz-potsdam.de/pubman/item/item_2305903
