| | Journal (article/letter/editorial) | metaquartzites of the northern Serra do Espinhac o (State of Bahia, Brazil) G. Morteani1 and D. Ackermand2...horizon belongs to the Middle Proterozoic Serra de Vereda member of the S~ao Marcos Formation of the...hills of the Serra de Canas=Cana Brava (Northern Serra do Espinhac o, State of Bahia, NE Brazil) about 10...10 km west of the town of Boquira. Sky blue lazulite and deep blue to lilac dumortierite are enriched...augelite Al2(PO4)(OH)3, trolleite Al4(PO4)3(OH)3, svanbergite SrAl3(PO4) (SO4)(OH)6, goyazite SrAl3(PO4)(HPO4)(OH)6 | | | Journal (article/letter/editorial) | of the Veredas formation (Northern Espinhaço, Brazil): LA-ICP-MS age determinations on relict and recrystallized...of the Veredas formation (Northern Espinhaço, Brazil): LA-ICP-MS age determinations on relict and recrystallized...quartzites of the Veredas formation (Northern Espinhaço, Brazil): LA-ICP-MS age 3 determinations on relict and...Veredas Formation (Northern 22 Espinhaço fold belt, Brazil) have been dated using laser ablation inductively...Neoproterozoic age of the metamorphosed zircons of the 35 Vereda formation corresponds to the Brasiliano-Panafrican | | | Journal (article/letter/editorial) | metamorphosed phosphatic sandstone, Espinhaço fold belt (Brazil) Gerhard Franz1 · Giulio Morteani2 · Dieter Rhede3...sandstone from the Mesoproterozoic Espinhaço fold belt, Brazil, in a dissolution–precipitation reaction: zircon1...mainly augelite, lazulite, and minerals of the svanbergite– crandallite–goyacite–florencite group. Xenotime-(Y)...the Espinhaço supergroup (São Francisco craton, Brazil; Fig. 1). Backscattered electron images (BSE),...solid solutions of the mineral group crandallite–svanbergite–goyazite–florencite [(Ca, Sr, REE)Al-phosphate–sulfates] | | | Journal (article/letter/editorial) | environment. Lazulite, augelite, trolleite, svanbergite, goyazite, crandallite, berlinite, tourmaline...augelite Al2(PO4)(OH)3, trolleite Al4(PO4)3(OH)3, svanbergite SrAl3(PO4)(SO4)(OH)6, goyazite SrAl3(PO4) (HPO4)(OH)...have been described e. g. from the Serra do Espinhaço (Bahia, Brazil, Casse- danne & Franco 1966, Cassedanne...Visser et al. 1997), from Diamantina (Minas Gerais, Brazil, Horn et al. 1996, Morteani & Ackermand 2001),...ternary solid solution goyazite – crandallite – svanbergite. At Analambano the quartzites display the most |
|