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Batalha Formation

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Journal Article
Published: 01 February 2011
The Canadian Mineralogist (2011) 49 (1): 277-300.
.... Four of the five known occurrences of PT in the BPP are hosted by discordant pegmatites intruded in quartzites or metaconglomerates of the Equador Formation, south of 6°40 ′ S latitude, namely the Batalha, Capoeira 2 (also referred in the literature as Mulungu), Quintos and Glorious deposits. The fifth...
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Journal Article
Journal: Elements
Published: 01 August 2012
Elements (2012) 8 (4): 281-287.
... carats of gem rough with a value of over 20 million dollars at $200/carat, was found ( Cornejo and Bartorelli 2010 ). In the BPP, the only prominent gem production is from the four “Paraíba tourmaline” deposits: Batalha, Quintos, Glorious, and Capoeira 2 (the latter being the site of the only still...
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Journal Article
Published: 01 October 2008
The Canadian Mineralogist (2008) 46 (5): 1097-1116.
... of the LCT family, rare-element-class, from the BPP, and from various zones in these pegmatites. Our objectives are: 1) to identify geological controls on the formation of gem-quality tourmalines within the pegmatites, with special attention to the “Paraíba tourmaline”, 2) to discriminate gem-quality...
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Journal Article
Journal: Elements
Published: 01 October 2011
Elements (2011) 7 (5): 333-338.
... reflect the environment of its formation and, in rare cases, provide a fingerprint for specific deposits ( Koivula 1994 and references therein). For example, native copper inclusions are indicative of gemstones from Paraíba, Brazil ( Fritsch et al. 1990 ). Other mineral inclusions in tourmaline include...
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Journal Article
Journal: Elements
Published: 01 October 2011
Elements (2011) 7 (5): 313-319.
... of tourmaline formation have all been reconstructed using this unique isotopic broadband recorder. Gem tourmaline is commonly close to elbaite in composition and occurs in pegmatite dikes as comb-like layers and as crystals in miarolitic cavities and veins ( Pezzotta and Laurs 2011 this issue). Prices for gem...
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Journal Article
Published: 01 August 2013
American Mineralogist (2013) 98 (8-9): 1610-1616.
.... 1968 ). The first specimens of tourmaline with a concentration of CuO up to 2 wt% were found in 1980s in the Batalha occurrence, state of Paraíba, northern Brazil ( Koivula and Kammerling 1989a ; Bank et al. 1990 ). Tourmalines found in this deposit were sapphire-blue, neon-blue, indigo, or bluish...
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Journal Article
Published: 01 April 2010
Mineralogical Magazine (2010) 74 (2): 241-255.
... ). Traditionally, the name `Paraiba' is reserved for bright blue to green Cu-bearing tourmalines from the da Batalha mine in Paraiba state, northeastern Brazil ( Koivula and Kammerling, 1989 ). Saturated and less-saturated blue and green tourmalines have been mined from other deposits near the da Batalha mine...
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Series: Geological Society, London, Special Publications
Published: 01 January 2010
DOI: 10.1144/SP333.15
EISBN: 9781862395817
... formations were used in the past to build some of the most important monuments located in the central region of Portugal such as, the ‘Igreja de Santa Cruz’ in Coimbra (12th century) and the ‘Mosteiro da Batalha’ in Batalha (14th–16th centuries) ( Aires-Barros 2001 ). The research carried out in this paper...
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Journal Article
Journal: Clay Minerals
Published: 01 September 2011
Clay Minerals (2011) 46 (3): 473-485.
.... This is indicative of the dominance of montmorillonite rather than beidellite among the smectite minerals, which is independently proved by a pronounced IR band at 630 cm−1. The formation of pink montmorillonite is not directly related to the emplacement of the Li-bearing PT pegmatite. The sheet silicate developed...
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Journal Article
Journal: Elements
Published: 01 June 2009
Elements (2009) 5 (3): 159-162.
... vary depending on the geologic conditions of formation of the host crystal. The intensity and shape of absorption bands in the OH region of the electromagnetic spectrum provide a test for synthetic amethyst. A band at 3595 cm -1 is present in the infrared spectrum of all natural amethysts but only...
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Journal Article
Journal: Economic Geology
Published: 01 May 2003
Economic Geology (2003) 98 (3): 671-682.
... in saline fluid inclusions: The transformation ferropyrosmalite <> clinopyroxene— Peter Kodera, Pamela J. Murphy, and Andrew H. Rankni 151 Study of the pore water chemistry through an argillaceous formation: a paleohydrochemical approach —Claude Degueldre, Andreas Scholtis, Andreas Laube, María...
Series: Geological Society, London, Special Publications
Published: 01 January 2010
DOI: 10.1144/SP331.16
EISBN: 9781862395794
... al. 1998 ). Several projects have examined historical quarries and exploitation methods, such as Portuguese projects on the quarries of the Batalha Monastery ( Neto et al. 2000 ) or a similar study on Lisbon's cathedral and Jerónimos Monastery. The need for a multidisciplinary approach...
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Journal Article
Journal: Elements
Published: 01 June 2009
Elements (2009) 5 (3): 163-168.
... routes since antiquity . Science 287 : 631 - 633 Groat LA , Laurs BM ( 2009 ) Gem formation, production, and exploration: Why gem deposits are rare and what is being done to find them . Elements 5 : 153 - 158 Gübelin EJ , Koivula JI ( 1986, 2005 , 2008...
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Journal Article
Published: 01 April 2016
American Mineralogist (2016) 101 (4): 889-906.
...-soluble.We tabulate 432 chemical formulas of plausible as yet undiscovered carbon minerals, some of which will be natural examples of known synthetic compounds, including carbides such as calcium carbide (CaC2), crystalline hydrocarbons such as pyrene (C16H10), and numerous oxalates, formates, anhydrous...
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Journal Article
Published: 01 February 2008
European Journal of Mineralogy (2008) 20 (1): 143-154.
... for pegmatitic evolution . Mineral. Petrol ., 81 , 249 – 263 . Rossman , G.R. , Fritsch , E. , Shigley , J.E. ( 1991 ): Origin of color in cuprian elbaite from São José de Batalha, Paraíba, Brazil . Am. Mineral ., 76 , 1479 – 1484 . Selway , J.B. ( 1999 ): Compositional...
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Journal Article
Journal: Economic Geology
Published: 01 November 2015
Economic Geology (2015) 110 (7): 1803-1834.
... of the Paracatu deposit in Brazil, a shallow-dipping, bulk-tonnage, vein-style low-grade Au(-Ag-Pb-Zn) orebody hosted in ~1000 Ma black phyllites of the Paracatu Formation, associated with intense shearing accompanying thrusting during the ~680 Ma Brasiliano orogeny. Massive to laminated quartz-sulfide-carbonate...
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Journal Article
Published: 01 January 2014
Reviews in Mineralogy and Geochemistry (2014) 78 (1): 371-398.
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Journal Article
Journal: Economic Geology
Published: 01 May 2006
Economic Geology (2006) 101 (3): 585-605.
... percent H 2 O, which yields a K/Na atomic ratio of 0.89. The absence of sylvite in the other inclusions suggests low K/Na ratios for most of the type 3b fluid inclusions modeled by the H 2 O-NaCl-(KCl) system. The values for δ 18 O and δD of the fluids were calculated using the formation temperature...
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