 | | Report (volume) | | S3 Lead-Zinc Deposits of the Boquira District State of Bahia, Brazil GEOLOGICAL SURVEY BULLETIN 3...cooperation with the Departamento National da Producao Mineral, Brazil, under the auspices of the International...1110-A Lead-Zinc Deposits of the Boquira District State of Bahia, Brazil By ROBERT F. JOHNSON CONTRIBUTIONS...cooperation with the Departamento Nacional da Producdo Mineral, Brazil, under the auspices of the International...of the Serra de Macaubas._________________________ 1 2 2 5 6 8 8 8 East flank of the Serra de Maca |  | | 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...fringing the Espinhac o rift. It is proposed that apatite, Al-phosphates and Al-borosilicates were chemically |  | | 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 |  | Visser, D., Felius, R. O., Moree, M. (1997) Augelite and cerian crandallite in dumortierite quartzites, Vaca Morta quarry, Vereda range, Macaúbas, Bahia, Brazil. Mineralogical Magazine, 61 (407) 607-609 doi:10.1180/minmag.1997.061.407.11 | Journal (article/letter/editorial) | | quartzites, Vaca Morta quarry, Vereda range, Macatibas, Bahia, Brazil D. Visser University Museum Utrecht...range, Macatibas, Bahia, Brazil. The Vereda range in the northwest of the state of Bahia is well known for...dumortierite-kyanite-muscovite quartzite, Vaca Morta, Vereda range, Macabas, Bahia SiO2 TiO2 A1203 Fe203 FeO MnO MgO CaO...confirmed by XRD analysis of a HF-treated sample. Apatite was not detected in any of the samples. Mineral...intense weathering of primary phosphates (e.g. apatite) in the presence of clay minerals may produce crandallite |  | | 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...the Espinhaço supergroup (São Francisco craton, Brazil; Fig. 1). Backscattered electron images (BSE),...over approximately 1000 km N–S in central-eastern Brazil running from the southern border of the States...part of the Serra de Vereda Formation, and in the southern Espinhaço of the São João da Chapada-Banderinha |  | | Journal (article/letter/editorial) | | goyazite, crandallite, berlinite, tourmaline, apatite, celestine, anhydrite, muscovite and dumortierite...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),... augelite, berlinite, amblygonite, wavellite, apatite, celestine, anhydrite, trolleite and hematite can...dumortierite, tourmaline, goyazite, berlinite, apatite, celestine, trolleite, amblygonite, hematite and |  | | Journal (issue) | | metasomatites contain feldspars (up to 10%), apatite (up to 10%), alkaline amphiboles (up to 3%), and...cleavelandite, morion, microcline, lepidolite, apatite, topaz, fluorite, and hambergite. 2. TOPAZ At the...microcline, cleavelandite, m o r i o n , fluorite, apatite, and hambergite. The largest topaz crystals occur...lepidolite, morion, microcline, rosterite, green apatite, pyrochlore, tantalite, and tourmaline, which is...deposit (Primor 'e). Fig. 4. Crystals of hambergite, apatite, rostertte: a,b,c,d - hambergite from the Mika |  | | Report (volume) | | Heteropol vie aral CMISetGr sec ce tiO ere et baaeen serra cre cee Calculated deformation-electron-density...light-element abundances. Nature 373:286 Carvalho da Silva J, Clark JR, Christ CL (1955) Crystal structure...Mineral 32:1-14. See also Jambor JL, Roberts AC, Vanko DA (1994) New Mineral Names. Am Mineral 79:1009-1014...Jambor JL, Mueller W, Shigley JE, Puziewicz J, Vanko DA (1984) New Mineral Names. Am Mineral 69:1193 Anovitz...Francis CA, Langley RH, Kissin SA, Shigley JE, Vanko DA, Zilczer JA (1984) Am Mineral 69:810 Malinko SV, | | | Report (volume) | | light-element abundances. Nature 373:286 Carvalho da Silva J, Clark JR, Christ CL (1955) Crystal structure...Mineral 32:1-14. See also Jambor JL, Roberts AC, Vanko DA (1994) New Mineral Names. Am Mineral 79:1009-1014...Francis CA, Langley RH, Kissin SA, Shigley JE, Vanko DA, Zilczer JA (1984) Am Mineral 69:810 Malinko SV,...121(4): 107112. See also Jambor JL, Roberts AC, Vanko DA (1994) New Mineral Names. Am Mineral 79: 1009-1014... See also Jambor JL, Grew ES, Puziewicz J, Vanko DA (1988) New Mineral Names. Am Mineral 73:441 Sokolova |
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