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Batalha Formation

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Journal Article
Published: 01 February 2011
The Canadian Mineralogist (2011) 49 (1): 277-300.
... 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 occurrence is found in alluvium covering the same quartzites. Another pegmatite, named Carrascão (also known as Fazenda...
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Journal Article
Journal: Elements
Published: 01 August 2012
Elements (2012) 8 (4): 281-287.
... or feldspar of the centrally located pegmatite core zone or in the core margin, the region around the core. Typically, only parts of these crystals are of gem quality, and gemstock is recovered by breaking out clear portions from the crystals. According to the most widely accepted theory of pocket formation...
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Journal Article
Published: 01 October 2008
The Canadian Mineralogist (2008) 46 (5): 1097-1116.
... pegmatites 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...
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Journal Article
Journal: Elements
Published: 01 October 2011
Elements (2011) 7 (5): 333-338.
... to ∼1 m in length and 35 cm in diameter, have been found in Madagascar, primarily as polychrome crystals that provide colorful sliced material. Inclusions in tourmaline reflect the environment of its formation and, in rare cases, provide a fingerprint for specific deposits ( Koivula 1994 and references...
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Journal Article
Journal: Palynology
Published: 03 July 2018
Palynology (2018) 42 (3): 392-399.
.... quadrifasciata anthidioides is present in the warmer northern regions of the Atlantic rainforest; the two exhibit similar foraging behaviour (Waldschmidt et al. 2000 ; Batalha-Filho et al. 2009 ). Their occurrence in such distinct biomes reveals a successful history of survival and reproduction under diverse...
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. The chemical complexity of tourmaline provides a geochemical recorder of unparalleled breadth, and a large number of major and trace elements in tourmaline are important tools in isotope geochemistry. The isotope...
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Series: Geological Society, London, Special Publications
Published: 01 January 2010
DOI: 10.1144/SP333.15
EISBN: 9781862395817
..., similar Portuguese limestones from other Jurassic 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...
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Journal Article
Published: 01 August 2013
American Mineralogist (2013) 98 (8-9): 1610-1616.
... in spodumene or lepidolite, and are emplaced in iron-poor quartzites or metaconglomerates of the Neoproterozoic Equador Formation. The Paraíba tourmaline occurs at the transition between the albite-rich inner intermediate zone and the quartz core of the pegmatites, in primary wedge-shaped crystals of near-end...
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Journal Article
Published: 01 April 2010
Mineralogical Magazine (2010) 74 (2): 241-255.
... occupied by Al, and Cu is a minor constituent of the octahedrally coordinated Y site ( MacDonald and Hawthorne, 1995 ). 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...
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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.
... 2007 ). The stoichiometric components of garnets also depend on the geologic setting. In lithium pegmatites, minerals that crystallize late in the formation of the gem pockets in the pegmatites can be nearly devoid of iron. In this setting, nearly pure end member spessartine garnet, Mn 3 Al 2 (SiO 4...
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Series: Geological Society, London, Special Publications
Published: 01 January 2010
DOI: 10.1144/SP331.16
EISBN: 9781862395794
... 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. This work was partially funded by FCT project POCTI/EAT/35063/2000 and by Centro de...
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Journal Article
Journal: Economic Geology
Published: 01 May 2003
Economic Geology (2003) 98 (3): 671-682.
... Study of the pore water chemistry through an argillaceous formation: a paleohydrochemical approach —Claude Degueldre, Andreas Scholtis, Andreas Laube, María Jesús Turrero, and Bertrand Thomas 55 Late Middle Ordovician olistostrome formation and magmatism along the Red Indian Line, the Laurentian arc...
Journal Article
Journal: Elements
Published: 01 June 2009
Elements (2009) 5 (3): 163-168.
...-Bard C , France-Lanord C , Giard D , de Narvaez D , Rondeau B ( 2000 ) Oxygen isotopes and emerald trade routes since antiquity . Science 287 : 631 - 633 Groat LA , Laurs BM ( 2009 ) Gem formation, production, and exploration: Why gem deposits are rare...
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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.
... by the formation of crystals from the pegmatitic melt, whereas in the hydrothermal-related stage fluids (especially H 2 O) were saturated and crystallization and alteration of crystals would exist simultaneously. It is reasonable to infer that the hydrothermal-related stage has a higher degree of fluid/rock...
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Journal Article
Journal: Economic Geology
Published: 01 November 2015
Economic Geology (2015) 110 (7): 1803-1834.
... with gold in order to constrain the scales and mechanisms of mass transfer for different ore components. Table 1 Stratigraphy of the Canastra Group in the Paracatu Area ( Freitas-Silva, 1996 ) Formation Member Thickness (m) Lithologies Chapada dos Pilões Hidrelétrica da Batalha 1,000–2,500...
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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.
... magmatism in the Amazonian craton ( Lamarão et al., 2002 ; Santos et al., 2004 ). The 1.7 to 1.4 Ga sedimentary platform cover of the Beneficiente Group, the ~1.4 Ga volcano-sedimentary Dardanelos Formation, and the ~1.2 Ga Canamã Syenite complete the stratigraphy of the provinces (Fig. 2...
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