 | | Report (issue) | | deduction of insolubles, mainly quartz. (2) Teofilo Otoni, Minas Gerais, Brazil; average of 6 electron microprobe...tourmaline-bearing granite and granite pegmatite (Brazil). Association: Autunite, meta-autunite, uranophane...meta-torbernite, chernikovite, uranian “opal" (Perus, Brazil). Distribution: From the Haiwee Reservoir, Coso...California, USA. At Perus, 25 km north of São Paulo, and from Teofilo Otoni, Minas Gerais, Brazil. On Portezuelo... Svisero (1969) Haiweeite, a new occurrence in Brazil. Amer. Mineral., 54, 966-969. (3) Plášil, J., K |  | | Report (issue) | | Meta-autunite group. Occurrence: In fissures in quartz syenite and around fossil wood (Karakat deposit...tourmaline-bearing granites and granite pegmatites (Perus district, Brazil). Association: Autunite, meta-autunite...metatorbernite, haiweeite, uranian “opal” (Perus district, Brazil). Distribution: From the Karakat uranium...Mountains, Tajikistan. In the Perus district, 25 km north of São Paulo, Brazil. In Germany, in the Rockelmann |  | | Journal (article/letter/editorial) | | acid volcanic rocks. The pegmatite consists of quartz, microcline, albite, aegirine, and arfvedsonite...orpinent' realgar, getchellite, calcite, fluorite, quartz, and others' It is replaced in places by cinnabar...minerals from Perus, 56o Paulo, Brazil: Bol. Inst. Geocienc. Astron. Unirs. Sdo Paulo, 2, 83-201 (in...Spectrographic analysis of material containing quartz showed in decreasingabundance: Si, Mg, Mn, Al, |  | | Journal (issue) | | series of graphite and black phyllite schists. Quartz veins bearing stibnite lodes occur in fracture...Secondary quartz solutions dusted many stibnite bases with bright whitish or graying quartz crystal druses...growth of tiny calcite crystals formed over the quartz. For the most part, stibnite prisms and terminations...since produced some o f the finest chalcopyrite and quartz specimens ever found in the Colorado mineral belt...float consisting of massive tetrahedrite, pyrite, quartz, and rhodonite. This occurrence, however, is probably |  | | 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...[franslation: BTS - Business Translation Services]. Sao Paulo: Solaris Cultural Publications, 2009. Original title:...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 |  | | Journal (article/letter/editorial) | | ) , 0-SiC; its crystal faces are coated by Si; quartz is also 2.52(50,240),and2.427(50,332) (no line...lesscommonly,p-SiCand FeSi'. ic segregationsin quartz; locally replacestetrahedrite-tennantite or is...kimberlitic magma at P-T conditions where high quartz is also stable. viz.. P < 20-28 kbar but >10 kbar...of the late, island-arc stage interstices among quartz grains. The mineral is inferred proper in the Kurile-Kamchatka...material. Refractive isolated xenomorphic grains in quartz in proximity to Au indices of d-AlrO, and of associated6-A1103and |  | | Journal (article/letter/editorial) | | 820--826, 1956. Ein Beitrag zur Vulkanologie S/id-Perus Von M. WEIBEL, M. FItANGIPANE-GYSEL und J. HI;NZIKER...Coropuna (6400m) ist der gr6Bte und miichtigste Vulkan Perus. Er erhebt sich 150 km NW yon Arequipa und 110 km...typically latite-andesites which contain some normative quartz in the groundmass. Plagioclase has 37---47~o An...WEIBELet al. - - Ein Beitrag zur Vulkanologie Siid-Perus o~eaHa, no~anMaacb Ha~ 3ana~H~iM CEJIOHOMAHJ;. Ha...Arbeit fiber den hSehsten und m/iehtigsten Vulkan Perus (6400 m) griindet sieh auf Feldbegehungen durch |  | | Journal (article/letter/editorial) | | of Russian). The mineral occurs in fractures in quartz and chalcedony in oxidized ores from former mines...which is synthesized easily, occurs as crusts on quartz, as small pockets in limonite, and as pseudomorphs...occurs with other secondaryuranium minerals at Perus (Sao Paulo) as oriented inclusions in autunite and meta-autunite |  | | Book | | ........................................... 25 Brazil .................................................Canada South Africa Namibia Russian Federation Niger Brazil Uzbekistan Ukraine Mongolia $40/kgU < $80/ kgU...operations. 9 In Central and South America, Brazil was the only country producing in 2001 and 2002...India Norway United States Canada South Africa Brazil Others Worldwide total Reserves (tonnes Th) 300...stages: 1. Replacement of micaceous shear rock by quartz-biotite-hematiteilmenite mineralization; 2. Intrusion |  | | Journal (article/letter/editorial) | | crystalline aggregates up to 5ram across in fractures in quartz and chalcedony in Orthorhombic, a 15.104, b 6.891...fraction of sea-floor mud near the found at Perus, Silo Paulo, Brazil, and elseisland of Diaoyudao, northwest...up to 0.15mm in diameter from wolframite-bearing quartz veins, Laikeng mining district, Ganan area, southern...Translucent white acicular crystals with mimetite on a quartz matrix from the Moon Anchor mine, Tonopah, Maricopa...Beijing, 208pp. Large yellowish-brown grains in a quartz matrix from the Bayan Obo Fe-Nb-rare- earth deposit |  | | Journal (issue) | | 199~ Weird The Mineral and Wonderful from Quartz Alberta's Collector's Newsletter in Septarian...(though a little skeptical) to learn of a nearby quartz collecting locality. It is a three-hour drive northeast...locomotive cxursions. My first collecting specialty was quartz, for which I've retained a soft spot, and I was...produced a wide variety of interesting and unusual quartz crystals. These are found in abundant ironstone...nodules that weather out of Fig. 1 Partial, hollow quartz crystal 11/4 inches (3 cm) across, with multiple |  | | Journal (article/letter/editorial) | | coarse grained porphyric adamellite with xenomorphic quartz, plagioclase, K-feldspar porphyroblasts, biotite...is not cataclased, and consists of xenomorphic quartz, K-feldspar, plagioclase, biotite which is frequently...820--826, 1956. Ein Beitrag zur Vulkanologie S/id-Perus Von M. WEIBEL, M. FItANGIPANE-GYSEL und J. HI;NZIKER...Coropuna (6400m) ist der gr6Bte und miichtigste Vulkan Perus. Er erhebt sich 150 km NW yon Arequipa und 110 km |  | | Journal (article/letter/editorial) | | and Shaw 1988). Horizontal dashed lines represent quartz and amorphous silica equlibria. The mineral stability...Mascarenhas, Y.P. (1991) Phurcalite from Perus, São Paulo, Brazil and redetermination of its crystal structure |  | | Book | | Instrument That Forged America 19 The Special Case of Brazil 39 El Dorado: Tale and Truth 59 Mining as a...provided by the mines particularly in Mexico, Peru and Brazil, that caused other activities to flourish. The...in connection with the arts and the material on Brazil. The chapter on legal ediets and the bibliog- ...Spanish-speaking countries of America, as well as Brazil, and have thought deeply about the meaning of...thesis of this study. Having lived four years in Brazil, he was particularly qualified to furnish significant |  | | Book | | 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...platinum from C6rrego Born Sucesso, Minas Gerais, Brazil 23:471-474 AMARGOSA DESERT Hydroboracite from the |  | | Book | | ........................................... 41 Brazil .................................................South Africa 0 96...J.00 I -l-L600 192,900 Brazil 137.900 155,700 155,700 155.700 Uranium Ukrni...was permitted and licensed but not yet operating. Brazil was the only count1y tn South Atnerica producing...n1etasediments are overlain by Mesoproterozoic quartz sandstone. The n1ineralization seems to be locally...coffinite with adularia, chlorite, quartz, hen1atite, cal cite, quartz, and sulfides; chloritization and |  | | Journal (article/letter/editorial) | | Valuyeva tion zone of the shows in granites, quartz, por phyries, and limestones ranging from present...oxidation zone on only a single show lying among quartz porphyries; this mineral forms dense and earthy...ursilite has also been observed in only one show in quartz porphyries. The mineral occurs only in areas where...Ca3(UO.,)4(Si,05)5(OH)4 • 17.5(1,0 granites and quartz porphyries, as well as in Quaternary drifts. In...l , , 1960). Haiweeite from California and Perus ( Brazil) occurs as spherulitic clumps or isolated grains |  | | Journal (article/letter/editorial) | | hand-picked material can still contain small amounts of quartz, gypsum and halite. A uranium oxide phase is also...Camargo, W.G.R.de (1971) Minerais uraniferous de Perus, S.P. Boletim de Instituto de Geociencase Astronomia |  | | Journal (article/letter/editorial) | | ��!�� � Jc�� Rice Mills, uartz -Mills for gold quartz, Sugar Mills, � P e �ri��'r'o� t'lie�t�!����e ��r··...I>r8ctical is rock quartz,and has no value whatever. Patents we commend to the perus&! of &II persons inin |  | | Journal (article/letter/editorial) | | ��!�� � Jc�� Rice Mills, uartz -Mills for gold quartz, Sugar Mills, � P e �ri��'r'o� t'lie�t�!����e ��r··...I>r8ctical is rock quartz,and has no value whatever. Patents we commend to the perus&! of &II persons inin |  | | Journal (issue) | | he carefully pried away the jagged, iron-stained quartz rock from the ever-widening seam. It finally opened...came from a single cavity lined with crystals of quartz, orthoclase and lepidolite, accompanied by small...smooth crystal faces. At first I imagined them to be quartz crystals. But then, with the aid of a flashlight...King County, Washington, 1977 Beautiful pyrite and quartz specimens are Washington classics, but to mine...mountainsides is not an easy task, 10 Pyrite with quartz crystals, 13.5 cm, from Spruce Mountain, Washington |  | | Journal (article/letter/editorial) | | right angle by a system of parallel orebearing quartz veins, which dip to the SW. They evidently are...eine Faltung und Schieferung der Ostkordillere Perus und ]3oliviens verantwortlich, der im Perm eine |  | | Journal (article/letter/editorial) | | e t a n d m o r e c o m p l e x . i i + ] Jun~perus s p . . . . . . . . . . . . . . . . . . . . . ....flints, both rounded and angular; white quartz-pebbles and quartz-sandstone in boulders ............... |  | | Journal (article/letter/editorial) | | additions to the minerals mentioned above contains quartz and sphene, is the product of the principal phase...Peru. 1141 Aufs~itze tion. Quartz diorite with plagieclase and quartz as major components formed aplitie...Le second eontient, outre les min6raux eit6s, du quartz et du sph6ne; e'est une diorite pyrox6nique ~ gros...quartzitique compos6e surtout de plagioelase et de quartz. I1 apparalt en masse dans eertaines zones de la...i~il3t sieh, wie in der Wesffazies Zentral- und Nord-Perus, in mehrere lithologisch unterschiedliche Formationen |  | | Journal (article/letter/editorial) | | LITHOLOOIES • ~ greom-gr~ lithic sandstone ~ quartz-lithic sandstone i St Michael s " Cave siltstone...with low-angle scour and fill structures. More quartz-rich sandstone lenses and stringers of siderite...iron-stained sideritic claystone ( 3 6 % ) , with minor quartz ( 4 % ) and matrix ( 2 % ) . Petrographically the...Bulgo TRIASSIC LYCOPOD 9 Sandstone than the more quartz-rich sandstones of the Newport Formation (Ward...the flats adjacent to the southerly prograding quartz-rich Gosford delta. In the Pittwater area I have |
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