 | Comin-Chiaramonit, P., Cundari, A., Piccirillo, E.M., Gomes, C.B., Castorina, F., Censi, P., De Min, A., Marzoli, A., Speziale, S., Velazquez, V.F. (1997) Potassic and Sodic Igneous Rocks from Eastern Paraguay: their Origin from the Lithospheric Mantle and Genetic Relationships with the Associated Parana flood tholeiites. Journal of Petrology, 38 (4) 495-528 doi:10.1093/petroj/38.4.495 | Journal (article/letter/editorial) | | DE SÃO PAULO, C.P. 30627, 01051 SÃO PAULO, SP, BRAZIL 5 DIPARTIMENTO DI SCIENZE DELLA TERRA, ‘LA SAPIENZA’...from southeastern Brazil, i.e. Alto Paranaı́ba, Ponta Grossa Arch, Serra do Mar, Lages and the flood basalts...magmatism from Alto Paranaı́ba Igneous Province (SE Brazil; Gibson et al., 1995b). KEY WORDS: Alkaline magmatism;...potassic rocks from the Alto Paranaı́ba Province of SE Brazil, widespread in an area of crustal thinning (Santero...includes the western side of the Paraná Basin of Brazil, bounded by an anticlinal structure established |  | | Book | | BARTORELLI ::• . . .. MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA ©...Brasileira do Livro, SP, Brazil) Cornejo, Carlos .Minerals & precious stones of Brazil. Carlos Cornejo, Andrea...3. Minerals - Brazil 4. Minerals- Classification 5. Mineralogy 6. Mineralogy - Brazil - History 7. Precious...Precious stones - Brazil I. Bartorelli, Andrea. II. Title. 09-10025 Cover photograph: Crystal of brazilianite...Landmann. CDD-549 Indexes for systematic catalog: 1. Brazil: Minerals and precious stones: Mineralogy and gemology |  | Souza Neto, João Adauto, Legrand, Jean Michel, Volfinger, Marcel, Pascal, Marie-Lola, Sonnet, Philippe (2008) W–Au skarns in the Neo-Proterozoic Seridó Mobile Belt, Borborema Province in northeastern Brazil: an overview with emphasis on the Bonfim deposit. Mineralium Deposita, 43 (2) 185-205 doi:10.1007/s00126-007-0155-1 | Journal (article/letter/editorial) | | Mobile Belt, Borborema Province in northeastern Brazil: an overview with emphasis on the Bonfim deposit...located in the Borborema Province in northeastern Brazil and consists of a gneiss basement (Archean to Paleo-Proterozoic)...s/n, Cidade Universitária, CEP 50.740-530 Recife, Brazil e-mail: adauto@ufpe.br J. M. Legrand Departamento...Universitário, Lagoa Nova, CEP 59.072-970 Natal, Brazil M. Volfinger : M.-L. Pascal Centre de Recherches...Bonfim . Borborema Province . Seridó Mobile Belt . Brazil Introduction Skarn deposits host a large variety |  | Guarino, Vincenza, Gennaro, Roberto de', Melluso, Leone, Ruberti, Excelso, Azzone, Rogério G. (2019) The Transition from Miaskitic to Agpaitic Rocks, as Highlighted by the Accessory Phase Assemblages in the Passa Quatro Alkaline Complex (SouthEastern Brazil) The Canadian Mineralogist, 57 (3) 339-361 doi:10.3749/canmin.1800073 | Journal (article/letter/editorial) | | THE PASSA QUATRO ALKALINE COMPLEX (SOUTHEASTERN BRAZIL) VINCENZA GUARINO§, ROBERTO DE’ GENNARO, AND...São Paulo, Rua do Lago 562, 05508-080 São Paulo, Brazil ABSTRACT The Passa Quatro alkaline complex is...Cretaceous to Paleogene Igneous Province of southeastern Brazil. It is composed mainly of nepheline syenites and...Quatro, Brazil. INTRODUCTION The Mesozoic to Cenozoic alkaline magmatism of southern Brazil crops out...complexes. Two important magmatic provinces in southern Brazil are the Alto Paranaı́ba and Serra do Mar. The rocks |  | | Journal (issue) | | Nikolaevskoye, Sentjaborskoye, 2nd Sovietic, Verchnee (andradite, axinite, calcite, chalkopyrite, danburite, datolite...Crystal 25x 17x 17mm. J& 60/13411. Agate (onyx) ?Brazil]. 6x 5 CM.N2 636/3292. Hofmann collection. All...Hungary, the Harz, Italy, Tirol, Saxony, Switzerland, Brazil, North America, Sitka Island, and Manila (Philippines)...and Sterling Hill. Sussex Co., New Jersey, USA: andradite — xis up to 13 cm; * bementite; cahnite — xis...80- L a Paz 81- Moctezuma 82- L o s Lamentos 83- Santa Eulalia; Naica 84- Ojuela mine, Mapimi 85- Cosala |  | | Book | | .......................................... 167 Brazil..................................................particular of Africa, the U.S.S.R., Canada and Brazil, much of it inspired by the search for exploitable...Montreal area of Canada and for central Coais, Brazil. N11111ber and na111e Each occurrence has been...a n;:itional number, for example Jacupiranga is Brazil 88. This is followed by the preferred name of the...a feiTchast ingsi te; garnets are gross ular-andradite, the h10,:,es a re i ron-rich varieties, and the |  | | Book | | gysinite-(Nd) and other rare minerals from [the Santa Lucia and Sa Duchessa mines,] Sardinia [Italy] (by...crandallite from the Alto Benedeto pegmatite, Parai'ba, Brazil (by J.P. Cassedanne & L. Barreto) 22: 183-185 ALTO...Burian goyazite from [Alto Bernardino, Paraiba,] Brazil (by J. S. White, Jr.) 12:379 ALUMOHYDROCALCITE...muscovite from the Ze Pinto prospect, Minas Gerais, Brazil 21:405-408 --with J.P. Cassedanne: Crystallized...Gerais, Brazil 21:409-412 --with J. P. Cassedanne: The Jaguara~u pegmatite, Minas Gerais, Brazil 25:165-170 |  | | Book | | Africa), Golconda (India), Oiamontlna (Minas Gerais, Brazil) and Yakutia (Russia). C Colour: colourless,...Oklahoma and Kansas (USA), Broken Hill (Australia) and Santa Eulalia (Mexico); crystals are found at Pribram...chalcotrlcite; ruby copper is a gem-quality crystal found at Santa Rita (New Mexico, USA) and Onganyo (Namibia). It...include Val Malenco and Vesuvius (Italy), Bagagem (Brazil), Kaiserstuhl (Ge.rmany) and Quebec (Canada). ...deposits are in Connecticut (USA), Minas Gerais (Brazil), Smilovne (Bulgaria) and Victoria Range (New Zealand) | | | Book | | Africa), Golconda (India), Oiamontlna (Minas Gerais, Brazil) and Yakutia (Russia). C Colour: colourless,...Oklahoma and Kansas (USA), Broken Hill (Australia) and Santa Eulalia (Mexico); crystals are found at Pribram...chalcotrlcite; ruby copper is a gem-quality crystal found at Santa Rita (New Mexico, USA) and Onganyo (Namibia). It...include Val Malenco and Vesuvius (Italy), Bagagem (Brazil), Kaiserstuhl (Ge.r many) and Quebec (Canada)....deposits are in Connecticut (USA), Minas Gerais (Brazil), Smilovne (Bulgaria) and Victoria Range (New Zealand) |  | | Journal (article/letter/editorial) | | garnet-bearing syenitic or monzonitic assemb- lages herein referred to as melasyenite/melamonzonite...allanite. A few syenitic samples contain grossular–andradite garnet. The common type of granitic dike contains...are typical mafic phases, along with grossular–andradite garnet. Plagioclase ranges from An37 to An17 |  | | Journal (article/letter/editorial) | | it is poor in andradite (0– 6%) and spessartine (0.5 –6%) (Fig. 2a). The highest andradite values correspond...and Pl-II (see text and Table 3 for details). lages observed in the rock with the sequence of stable |  | Silva, Thyego R., Ferreira, Valderez P., Lima, Mariucha Maria C., Sial, Alcides N. (2019) Geochemical and isotope evidence for mantle-derived source rock of high-K calc-alkaline I-type granites, Pernambuco–Alagoas Domain, northeastern Brazil. International Journal of Earth Sciences, 108 (4) 1095-1120 doi:10.1007/s00531-019-01696-9 | Journal (article/letter/editorial) | | granites, Pernambuco–Alagoas Domain, northeastern Brazil Thyego R. Silva1 · Valderez P. Ferreira1 · Mariucha...Domain of the Borborema Province, northeastern Brazil. These rocks exhibit low-angle foliation, suggesting...rocks · U–Pb ages · Sr–Nd–O isotopes · Northeastern Brazil Introduction Widespread emplacement of Neoproterozoic–Cambrian...s/n, Cidade Universitária, Recife, PE 50740‑550, Brazil geochemical, and geochronological data of granitoids...chlorite, muscovite, and epidote. Pernambuco, Recife, Brazil. The calibration curves were prepared by analyses |  | | Journal (article/letter/editorial) | | almandine 49– 28%, grossularite 23 –16% and andradite 7 – 3% (Fig. 10C). By contrast, the chemical composition...percentage of garnet end members. Alm almandine; And andradite; Grs grossularite; Pyr pyrope; Sps spessartite...Mineral assembPamić, J., Šćavničar, S., Med lages of amphibolites associated with alpine-type ultramafics |  | | Journal (issue) | | Occurrence and mining of high grade quartz in Brazil. Testing and selection of crystals for radio use...primitive vil- World's Youngest Mineral Collector lages," said McGrew. "Every co-operaLouis Thomns Vl ismns...Calif., announces the acquisition of some superb andradite garnets from a newly opened up tungsten deposit...Sao raulo. 2484, Bello Horizonte, Minas Geraes, Brazil. Beautiful Opals-Direct &0111 Australia. lapidaries |  | | Report (issue) | | they often show characteristic mineral assemb lages or metal combinations. The clustering seems mainly...Permian dykes and sills. While the magnetite-andradite veins in the Gjerpen area pre-date the intrusion...granites. The limestones were replaced by grossular-andradite, diopsidehedenbergite and wollastonite dominated...fluorite veins are characterized by abundant andradite, magnetite, hematite and base metal sulphides...Early-pre-dolerite-stage. The coarse-grained porous garnet (andradite) skarns contain local concentrations of magnetite |  | | Report (issue) | | Company line, north of the road between the vil lages of Cedar Mountain and Blue Ridge (see Map 18, Locality...Amianthus Amphibole * Anatase Andalusite Andesine Andradite Anglesite Annabergite Annerodite Anorthite Anthophyllite |  | | Book | | abundance. Regional zoning, in Rio Grande Do Sui, Brazil, is controlled more by composition of the rock...Spittal/Drau (Gernot Weissensteiner, pers. comm.). BRAZIL Murata et al. (1987) report analcime with heulandite...remainder is made up of sanidine, clinopyroxene, and andradite garnet (Pearce, 1970). The analcime crystallized...actinolite greenschist (380"-400" C) > hornblende-andradite-quartz-magnetite (400"-600" C) > quartz-diorite...or with low-temperature garnet (grossular and andradite), thomsonite, prehnite, calcite, laumontite, epidote | | | Book | | abundance. Regional zoning, in Rio Grande Do Sui, Brazil, is controlled more by composition of the rock...Spittal/Drau (Gernot Weissensteiner, pers. comm.). BRAZIL Murata et al. (1987) report analcime with heulandite...remainder is made up of sanidine, clinopyroxene, and andradite garnet (Pearce, 1970). The analcime crystallized...actinolite greenschist (380"-400" C) > hornblende-andradite-quartz-magnetite (400"-600" C) > quartz-diorite...or with low-temperature garnet (grossular and andradite), thomsonite, prehnite, calcite, laumontite, epidote |  | | Report (issue) | | Fluorapatite, 3 cm tall; Golconda Mine, Minas Gerais, Brazil Fluorapatite in Calcite; Liscombe Property, Wilberforce...hydroxylapatite at the Sapo Mine, Minas Gerais Brazil (Menezes 2009) (see page 54). The chemistry of...from several localities in both Madagascar and Brazil is artificially enhanced to "neon" blue by heat-treating...apatite crystal from the Golconda Mine, Minas Gerais, Brazil. John Ra kova n graphics can resemb le rosettes...localities including theSapoMine in MinasGerais,Brazil (see page 54); Palermo #1 Pegmatite Mine inNorthGroton |  | | Book | | has been converted to assemblages dominated by andradite garnet, vesuvianite, and wollastonite. Most skarns...skarns derived fron1 n1arble are rich in andradite and contain epidote. The latest nuneral changes connected...Typically the variance is 2; but there are so1ne assemb lages which represent univariant equilibrium. 2. T he...ulari te Cliooioisile + 3Ca3 Fe 2 Si 3 O12 Andradite The equilibriun1 curve is shown as B (solid)... and 7 in F ig. 6- 12. The calcareo us asse1nb lages (Fig. 6- l 5) for the n1ost part are those considered |  | | Report (issue) | | (SiO ) k) Grossularite (Gro) Ca.Al (SiO.) 5) Andradite (And) Ca3 Fe 2 (SiO^) If the physical properties...remaining. If one assumes that the mole fraction of andradite is insignificant, which is reasonable, there is...fromWinchell (1958, p. 595). If the mole fraction of andradite is insignificant, then the figure reduces to a...planes yields a line (binary solid 135 .90t Andradite 1.88 186- L84 Almandite 182- u L80 o -...diagram is very applicable to metamorphic assembNa"*~ lages in the Windsor quadrangle because of the high ratios |  | Cobbing, E. J., Pitcher, W. S., Wilson, J. J., Baldock, J. W., Taylor, W. P., McCourt, W., Snelling, N. J. (1981) The Geology of the Western Cordillera of northern Peru. Overseas Memoir 5. Institute of Geological Sciences | Report (issue) | | c. - L.cF\ �- 0C\t:;24-0(\ COLOMBIA ECUADOR BRAZIL ,. • 1/f ., ... ... - - II ... - •...Rosa Supu-unit 44 The Santa Rosa Super-unit in the Huaura Complex 46 The Santa Rosa Super-unit in the...Fortaleza Complex 48 The Santa Rosa Super-unit in the Casma Complex 48 The Santa Rosa Super-unit: a summary...{Antamina/11agistral/Pasto Bueno) group 120 Cordillera egra (Santa Toribio/Pashpa/Patara) group 120 Quiruvilca/Chiletc...facies and 4 Diagrammatic 33 Distribution of the Santa Rosa and Paccho super-units stratigraphic relations |  | | Book | | Close-up of t h i n sec tion. Crossed polaroids. Andradite skarn (G) is penetrated by the aggre gate of...(mainly manganoan hedenbergite), garnet (mainly andradite and a small amount o f grossular), wollastonite...its a n d ra d i te skarn becomes abundant . Andradite was replaced by hedenbergite ( Fig. I I 1 -3-3)...ized the replacement of cli nopyroxene skarn by andradite skarn in the Yaguki m i ne. He discussed oxygen...began in an oxidizing condi tion depositing andradite, and tran sferred to a reducing condition depositing |  | | Report (issue) | | Carlin-type gold deposits in the Northumberland, Santa Fe, and Relief Canyon districts are thought to be...irnportant producer beginning in 1905, and the Santa Fe district, discovered in 1879 and rnainly exploited...specin1ens were difficult at best, and ,nineral assemb lages for many historic minin g ca ,nps are poorly known...in the formation of hedenbergitic pyroxene and andradite. Addition or remobilization of alkali rnetals...Battle Mountain cListrict, in several tnines of the Santa Fe district, and in a few n1ines in the Spruce Mountain |  | | Book (volume) | | a combination of pyrope and uvarovite, or and andradite. are char acteristic In the chemical analyses...ferrous oxide for almandite ing grossularite, andradite, and any available lime left over from the last...Ferrous oxide Alumina Silica Ferric oxide (3) Andradite : Lime Silica (4) Grossularite : Lime Alumina...Silica ( 1 ) Pyrope : Pyrope . . Almandite. . Andradite . . Grossularite (Mg O) . . (Al O3) . . (Sib2)...Almandite : Ferrous oxide Alumina Silica (4) Andradite : Ferric oxide Lime Silica (5) Grossularite : |
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