 | Hartmann, Léo Afraneo, da Cunha Duarte, Lauren, Massonne, Hans-Joachim, Michelin, Cassiana, Rosenstengel, Leonardo Manara, Bergmann, Magda, Theye, Thomas, Pertille, Juliana, Arena, Karine Rosa, Duarte, Sandro Kucera, Pinto, Viter Magalhães, Barboza, Eduardo Guimarães, Rosa, Maria Luiza C.C., Wildner, Wilson (2012) Sequential opening and filling of cavities forming vesicles, amygdales and giant amethyst geodes in lavas from the southern Paraná volcanic province, Brazil and Uruguay. International Geology Review, 54 (1) 1-14 doi:10.1080/00206814.2010.496253 | Journal (article/letter/editorial) | | amygdales and giant amethyst geodes in lavas from the southern Paraná volcanic province, Brazil and Uruguay a...Bento Gonçalves, Porto Alegre, Rio Grande do Sul, Brazil b Departamento de Materiais, Escola de Engenharia...Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil c Institut für Kristallchemie und Mineralogie...Geological Survey of Brazil (CPRM), Rua Banco da Província, Porto Alegre, Rio Grande do Sul, Brazil e Departamento...Universidade Federal da Roraima, Rio Branco, Roraima, Brazil Published online: 06 Aug 2010. To cite this article: |  | Gilg, H. Albert, Krüger, Yves, Taubald, Heinrich, van den Kerkhof, Alfons M., Frenz, Martin, Morteani, Giulio (2014) Mineralisation of amethyst-bearing geodes in Ametista do Sul (Brazil) from low-temperature sedimentary brines: evidence from monophase liquid inclusions and stable isotopes. Mineralium Deposita, 49 (7) 861-877 doi:10.1007/s00126-014-0522-7 | Journal (article/letter/editorial) | | ARTICLE Mineralisation of amethyst-bearing geodes in Ametista do Sul (Brazil) from low-temperature sedimentary...into the genesis of giant amethyst-bearing geodes in Early Cretaceous Paraná continental flood basalts...Amestita do Sul, Brazil. Monophase liquid inclusions in colourless quartz, amethyst, calcite, barite...organotrophic bacteria. During the subsequent stages II (amethyst, goethite and anhydrite), III (early Editorial...homogenisation temperatures and in δ18O values of amethyst show evidence of repeated pulses of ascending |  | Hartmann, L.A., Medeiros, J.T.N., Baggio, S.B., Antunes, L.M. (2015) Controls on prolate and oblate geode geometries in the Veia Alta basalt flow, largest world producer of amethyst, Paraná volcanic province, Brazil. Ore Geology Reviews, 66. 243-251 doi:10.1016/j.oregeorev.2014.11.005 | Journal (article/letter/editorial) | | flow, largest world producer of amethyst, Paraná volcanic province, Brazil L.A. Hartmann a,⁎, J.T.N. Medeiros...9500, 91501-970, Porto Alegre, Rio Grande do Sul, Brazil Instituto de Física, Universidade Federal do Rio...9500, 91501-970 Porto Alegre, Rio Grande do Sul, Brazil a r t i c l e i n f o Article history: Received...2014 Available online 13 November 2014 Keywords: Amethyst geode Veia Alta flow Prolate Oblate Hydrothermal...Ametista do Sul, Brazil, exerted the fundamental control on the shape and size of the amethyst geodes. The |  | Duarte, Lauren C., Hartmann, Leo A., Ronchi, Luiz H., Berner, Zsolt, Theye, Thomas, Massonne, Hans J. (2011) Stable isotope and mineralogical investigation of the genesis of amethyst geodes in the Los Catalanes gemological district, Uruguay, southernmost Paraná volcanic province. Mineralium Deposita, 46 (3) 239-255 doi:10.1007/s00126-010-0323-6 | Journal (article/letter/editorial) | | genesis of amethyst geodes in the Los Catalanes gemological district, Uruguay, southernmost Paraná volcanic...S) and mineralogical studies of the world-class amethyst-geode deposits of the Los Catalanes gemological...mineralized basaltic andesites from the Cretaceous Paraná volcanic province are intensely altered to zeolites...silica minerals in geodes (chalcedony, quartz, and amethyst) are much larger and the values generally somewhat...deposits than in the Ametista do Sul area of southern Brazil. The range of δ34S values (−15.0 to −0.3‰) of altered |  | Baggio, S.B., Hartmann, L.A., Andrade, R.H.P., Rizzotto, G.J., Duarte, S.K., Knijnik, D.B., Simões-Neto, J.A. (2015) Basalt stratigraphy and silica gossans in Campo Grande and Serra de Maracaju, Mato Grosso do Sul, Paraná Volcanic Province. Ore Geology Reviews, 69. 73-87 doi:10.1016/j.oregeorev.2015.01.015 | Journal (article/letter/editorial) | | and Serra de Maracaju, T Mato Grosso do Sul, Paraná volcanic province IP Authors: S.B. Baggioa, L...91501-970 Porto Alegre, Rio Grande do Sul, b MA Brazil Departamento Nacional de Produção Mineral, Superintendência...Grande, Mato Grosso do c TE Sul, Brazil Geological Survey of Brazil (CPRM), SUREG-GO, Rua 148, 485, Setor...Setor Marista; CE P 74170-110 Goiânia, Goiás, Brazil AC E-mail addresses: Sérgio Benjamin Baggio...and Serra de Maracaju, T Mato Grosso do Sul, Paraná volcanic province IP Sérgio Benjamin Baggioa; |  | Arena, K.R., Hartmann, L.A., Baggio, S.B. (2014) Geological controls of copper, gold and silver in the Serra Geral Group, Realeza region, Paraná, Brazil. Ore Geology Reviews, 63. 178-200 doi:10.1016/j.oregeorev.2014.05.005 | Journal (article/letter/editorial) | | the Serra Geral Group, Realeza region, Paraná, Brazil K.R. Arena, L.A. Hartmann, S.B. Baggio PII: DOI:...the Serra Geral Group, Realeza region, Paraná, Brazil, Ore Geology Reviews (2014), doi: 10.1016/j.oregeorev...R., Hartmann, L.A.*, Baggio, S.B. RI P T Paraná, Brazil MA NU Instituto de Geociências, Universidade...9500; 91501-970 Porto Alegre, Rio Grande do Sul, Brazil ED E-mail addresses: PT Karine da Rosa Arena...the Serra Geral Group, Realeza region, SC Paraná, Brazil MA NU Karine da Rosa Arena, Léo Afraneo Hartmann* |  | Baggio, Sérgio Benjamin, Hartmann, Léo Afraneo, Lazarov, Marina, Massonne, Hans-Joachim, Opitz, Joachim, Theye, Thomas, Viefhaus, Tillmann (2018) Origin of native copper in the Paraná volcanic province, Brazil, integrating Cu stable isotopes in a multi-analytical approach. Mineralium Deposita, 53 (3) 417-434 doi:10.1007/s00126-017-0748-2 | Journal (article/letter/editorial) | | ARTICLE Origin of native copper in the Paraná volcanic province, Brazil, integrating Cu stable isotopes in...the origin of native copper mineralization in the Paraná volcanic province that invoke magmatic, late magmatic...isotopic composition of the native copper in the Paraná volcanic province varies from −0.9‰ in the southeastern...Grande do Sul state) to 1.9‰ in the central portion (Paraná state) of the province. This study supports a hydrothermal...by supergene enrichment for native copper in the Paraná volcanic province. Editorial handling: F. Melcher |  | Fulfaro, V. J., Saad, A. R., Perinotto, J. A. J., Etoherehere, M. L. C., Verolavsky, G. (1997) Paraná Basin: Mineral Resource Potentials in Brazil, Uruguay, and Paraguay. International Geology Review, 39 (8) 703-722 doi:10.1080/00206819709465297 | Journal (article/letter/editorial) | | tandfonline.com/loi/tigr20 Paraná Basin: Mineral Resource Potentials in Brazil, Uruguay, and Paraguay a...(UNESP) , Caixa Postal 178, Rio Claro SP, 13506-900, Brazil b Institute de Geologia y Paleontologia, Facultad...Etoherehere & G. Verolavsky (1997) Paraná Basin: Mineral Resource Potentials in Brazil, Uruguay, and Paraguay, International...Inc. All rights reserved. Paraná Basin: Mineral Resource Potentials in Brazil, Uruguay, and Paraguay V...(UNESP), Caixa Postal 178, 13506-900 Rio Claro SP, Brazil Downloaded by [University of Colorado - Health |  | | Journal (article/letter/editorial) | | injectites at the base of the Paraná volcanic province, Novo Hamburgo, Brazil a a Léo Afraneo Hartmann...91501-970 , Porto Alegre , Rio Grande do Sul , Brazil Published online: 30 Nov 2012. To cite this article:...injectites at the base of the Paraná volcanic province, Novo Hamburgo, Brazil, International Geology Review...injectites at the base of the Paraná volcanic province, Novo Hamburgo, Brazil Léo Afraneo Hartmann*, Sérgio...Sul, 91501-970 Porto Alegre, Rio Grande do Sul, Brazil Downloaded by [Selcuk Universitesi] at 05:45 14 |  | | Journal (article/letter/editorial) | | the Vista Alegre district, Paraná basaltic province, southernmost Brazil a a Viter Magalhães Pinto..., Porto Alegre, Brazil b CPRM – Geological Survey of Brazil , Porto Alegre, Brazil Published online:...the Vista Alegre district, Paraná basaltic province, southernmost Brazil, International Geology Review...the Vista Alegre district, Paraná basaltic province, southernmost Brazil 1938-2839 Geology Review, 0020-6814...Sul, Porto Alegre, Brazil; b CPRM – Geological Survey of Brazil, Porto Alegre, Brazil (Accepted 2 November |  | | Journal (article/letter/editorial) | | and right handed quartz on the unit-cell scale: Brazil law twinning (Miehe & Graetsch, 1992). Since 1976...Hunstanton flint (12-17 %, Heaney & Post (1992)), 2) Brazil (14 %), 3) Mexico (8 %), 4) Lake Superior (0 %)...agates used, apart from a few found in Scotland and Brazil, were smaller than 6 cm. For the present study...1. Mexico (38), 2. Iran (50), 3. BTVP (60), 4. Brazil (133), 5. Lune, Australia (145), 6. Agate Creek...agates for that region. Open circles representing Brazil and Northumbria have been adjusted to show the |  | | Journal (article/letter/editorial) | | igneous geodes (fig. 3), which are common in Mexico, Brazil, Uruguay, and other countries, are essentially...These include the sometimes very large elongate amethyst geodes called “cathedrals.” Thus, one way to distinguish...Gemological district, Artigas, Uruguay, southern Paraná Magmatic Province. Journal of Volcanology and Geothermal... Gatter, and A. J. Strieder. 2003. Genesis of amethyst geodes in basaltic rocks of the Serra Geral Formation...Formation (Ametista do Sul, Rio Grande do Sul, Brazil): A fluid inclusion, REE, oxygen, carbon, and Sr |  | Voudouris, Panagiotis, Melfos, Vasilios, Mavrogonatos, Constantinos, Tarantola, Alexandre, Gӧtze, Jens, Alfieris, Dimitrios, Maneta, Victoria, Psimis, Ioannis (2018) Amethyst Occurrences in Tertiary Volcanic Rocks of Greece: Mineralogical, Fluid Inclusion and Oxygen Isotope Constraints on Their Genesis. Minerals, 8 (8) 324 doi:10.3390/min8080324 | Journal (article/letter/editorial) | | minerals Article Amethyst Occurrences in Tertiary Volcanic Rocks of Greece: Mineralogical, Fluid Inclusion...Epithermally altered volcanic rocks in Greece host amethyst-bearing veins in association with various silicates...alternations of amethyst, chalcedony and/or carbonates is a common characteristic of the studied amethyst-bearing...propylitic and zeolitic types. Precipitation of amethyst took place from near-neutral to alkaline fluids...Fluid inclusion data suggest that the studied amethyst was formed by hydrothermal fluids with relatively |  | Pinto, Viter Magalhães, Hartmann, Léo Afraneo, Santos, João Orestes S., McNaughton, Neal Jesse, Wildner, Wilson (2011) Zircon U–Pb geochronology from the Paraná bimodal volcanic province support a brief eruptive cycle at ~135Ma. Chemical Geology, 281 (1) 93-102 doi:10.1016/j.chemgeo.2010.11.031 | Journal (article/letter/editorial) | | Research paper Zircon U–Pb geochronology from the Paraná bimodal volcanic province support a brief eruptive...Roraima, Avenida Cap. Ene Garcez, Boa Vista, Roraima, Brazil Instituto de Geociências, Universidade Federal...9500, 91500-970 Porto Alegre, Rio Grande do Sul, Brazil Centre for Exploration Targeting, University of...105, 90840-030 Porto Alegre, Rio Grande do Sul, Brazil b c a r t i c l e i n f o Article history: Received...online 8 December 2010 Editor: B. Bourdon Keywords: Paraná magmatic province Zircon SHRIMP geochronology Basalt |  | | Catalog/List | | exceptional rhodonites in the world are now found in Brazil. They possess the rich ruby red color in large...Mina Mine, Conselheiro Lafaiete, Minas Gerais, Brazil 5.8 cm tall x 7.3 cm wide COPPER Copper, Chengmenshan...do Salinas Dist., Coronel Murta, Minas Gerais, Brazil 13 cm tall x 11 cm wide QUARTZ Gleaming golden...which lies at the heart of tourmaline mining in Brazil. The exceptionally high chroma values rival all...Minas Gerais, Brazil 13 cm tall x 16 cm wide CALCITE & AMETHYST Calcite with Amethyst, Catalan Dist |  | Pinto, Viter Magalhães, Massonne, Hans-Joachim, Wildner, Wilson, Hartmann, Léo Afraneo, Debruyne, David, Theye, Thomas (2019) Chemistry of chromium spinel in high-Mg rocks from the Morungava Intrusion, Cretaceous Paraná Igneous Province, southernmost Brazil. Mineralogy and Petrology, 113 (6) 765-782 doi:10.1007/s00710-019-00677-9 | Journal (article/letter/editorial) | | Morungava Intrusion, Cretaceous Paraná Igneous Province, southernmost Brazil Viter Magalhães Pinto 1,2 &...mafic-ultramafic intrusion that is associated with the Paraná flood basalts. Therefore, we analyzed the composition...chemistry . High-Mg rocks . Morungava intrusion . Paraná magmatism Editorial handling: M.A.T.M. Broekmans...Domingos Rodrigues 02, Pelotas, RS CEP: 96010-440, Brazil 2 Instituto de Geociências, Universidade Federal...Gonçalves 9500, Porto Alegre, RS CEP 90501-970, Brazil 3 Institut für Mineralogie und Kristallchemie |  | Salomon, Eric, Koehn, Daniel, Passchier, Cees, Hackspacher, Peter Christian, Glasmacher, Ulrich Anton (2015) Contrasting stress fields on correlating margins of the South Atlantic. Gondwana Research, 28 (3) 1152-1167 doi:10.1016/j.gr.2014.09.006 | Journal (article/letter/editorial) | | Ciencias Exatas, UNESP, Rio Claro, SP 13506-900, Brazil d Institute of Earth Sciences, University of Heidelberg...Paleostress Passive margin South Atlantic Namibia Brazil a b s t r a c t The “passiveness” of passive continental...e. NW Namibia and SE/S Brazil. Both areas are covered by the ~133-Maold Paraná-Etendeka extrusives that...movement with NW-SE directed compression. SE/S Brazil was mostly affected by strike-slip faulting, with...Similar fault systems appear widespread across SE Brazil and may be the combined result of flexural margin |  | | Journal (article/letter/editorial) | | isotopes Weathering profiles River water Laterite Paraná River Misiones Argentina a b s t r a c t We have...processes. Smaller tributaries in NW Argentina to the Paraná River (second largest river in South America) carry...concentration of dissolved Cr in the ca. 1200 km long Paraná River from Misiones to its estuary and discharge...in its Cr isotope composition. Results from the Paraná estuary are identical with recently analyzed surface...example of the Paraná River. Simple Cr input flux calculations reveal that the Paraná River accounts for |  | | Journal (issue) | | geology, and notable localities of diamond mining in Brazil, and outlines plans for future diamond production...colored stones • Cultured pearl market • Moroccan amethyst • Emerald dealing in Afghanistan • Montana sapphire... Svisero, James E. Shigley, and Robert Weldon Brazil, which commanded global production in the 1700s...Gerais and Mato Grosso, are presented. W hile Brazil is widely known for the production of colored gemstones...deposits. According to Kimberley Process statistics, Brazil produced 31,825 carats in 2015, although this figure |  | | Book | | Avenue, Cidade Universitária, Recife, Pernambuco, Brazil e-mail: carlabarreto.geo@hotmail.com Jean Bédard...Tecnológica de Minas Gerais, Araxá, Minas Gerais, Brazil e-mail: 2013luciam@gmail.com Danielle K. Moyer...Tecnológica de Minas Gerais, Araxá, Minas Gerais, Brazil e-mail: hildorster@gmail.com Stephen Self Department...Greenland, Emeishan, Ethiopian, Ferrar, Iceland, Karoo, Paraná, Siberian, and West Greenland) are well covered...conditions. Compare the modern landscapes of the Paraná and the West Greenland flood basalts and the Saudi |  | | Journal (article/letter/editorial) | | Some of the finest prehnite and quartz, including amethyst, in southern Africa has been collected in the...known for its luster, clarity, and phantoms of amethyst and smoky quartz zoned in single crystals. The...region. 442 ROCKS & MINERALS Figure 1. A group of amethyst-tipped quartz, 4.5 cm. Uli Bahmann specimen. ...the bulk of the quartz, amethyst, and prehnite. Although some quartz and amethyst have been clandestinely...colorless quartz crystals. Finding good-quality, large amethyst or smoky quartz is not easy and requires much |  | | Journal (article/letter/editorial) | | the Vista Alegre district, Paraná basaltic province, southernmost Brazil—Viter Magalhães Pinto, Léo Afraneo...“Americano do Brasil” layered intrusion, central Brazil, and its Ni-Cu sulfide deposits— Jonas Mota e Silva...genesis of amethyst geodes in the Los Catalanes gemological district, Uruguay, southernmost Paraná volcanic |  | | Journal (article/letter/editorial) | | previous claims that agates from New Zealand and Brazil were formed long after their host. K E Y WO R D...Somers, New Zealand (89 Ma); Rio Grande do Sul, Brazil (135 Ma). Mt. Warning agates are white- to- pale...Zealand (VT) Rum, Scotland (RL) Rio Grande do Sul Brazil & UK purchase Bobonong, Semolale, Botswana (HK)...(1) the young age group (excluding Brazil and New Zealand); (2) Brazil and New Zealand; and (3) middle/old-age...difference between the desiccator slabs and powders. Brazil 64 and Mt. Warning 6, with a 0.25% difference, |  | | Journal (issue) | | Source from Ethiopia Mining 38 Touring Mines in Brazil Gemology 50 Fluid Inclusions Confirm Authenticity...gem-manufacturing countries, including India, Thailand, Brazil, and China. Meanwhile new gem mineral resources...and Fair Trade certification in Rio de Janeiro, Brazil, last May. These are among the many issues facing...major gem mining, production, and trade centers. ““Brazil has become an important player in the worldwide...in the field of ethical mining and fair trade, Brazil has the opportunity to promote a global exchange |  | | Book | | until he managed to reach the land of his dreams, Brazil. A specialist in the field of geology and mineralogy...crystals and the remarkable mineral treasures of Brazil, as well as the incredible adventures and difficulties...UNIQUE MINERALS IN WORLD MUSEUMS GEM TREASURES OF BRAZIL Cyan Magenta Yellow Black 1 Delev Ilia Deleff...UNIQUE MINERALS IN WORLD MUSEUMS GEM TREASURES OF BRAZIL SOFIA–MOSCOW 2004 3 Cyan Magenta Yellow Black...MINERAL TREASURES OF BRAZIL 76 85 AN OUTLINE OF THE MINERAL RESOURCES OF BRAZIL ORIGIN OF GIANT CRYSTALS |
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