1-20 OF 4169 RESULTS FOR

Brazil Lake

Results shown limited to content with bounding coordinates.
Save search
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Article

Glacial dispersal of indicator minerals from the Brazil Lake LCT pegmatites, southwest Nova Scotia, Canada

M.B. McClenaghan, D.M. Brushett, R.C. Paulen, C.E. Beckett-Brown, J.M. Rice
Published: 20 January 2025
Geochemistry: Exploration, Environment, Analysis (2025) geochem2024-047.
DOI: https://doi.org/10.1144/geochem2024-047
...M.B. McClenaghan; D.M. Brushett; R.C. Paulen; C.E. Beckett-Brown; J.M. Rice The Brazil Lake lithium-cesium-tantalum (LCT)-type pegmatites (North, South, and Army Road pegmatites) in eastern Canada, were the focus of a detailed till study to document glacial dispersal of LCT pegmatite indicator...
PDF
Add to Citation Manager
Early Publication
Journal Article

NATURE AND ORIGIN OF AN LCT-SUITE PEGMATITE WITH LATE-STAGE SODIUM ENRICHMENT, BRAZIL LAKE, YARMOUTH COUNTY, NOVA SCOTIA. II. IMPLICATIONS OF STABLE ISOTOPES (δ 18 O, δD) FOR MAGMA SOURCE, INTERNAL CRYSTALLIZATION AND NATURE OF SODIUM METASOMATISM

Daniel J. Kontak, T. Kurtis Kyser
Published: 01 August 2009
The Canadian Mineralogist (2009) 47 (4): 745–764.
DOI: https://doi.org/10.3749/canmin.47.4.745
...Daniel J. Kontak; T. Kurtis Kyser Abstract La pegmatite granitique de Brazil Lake (395 Ma), rare exemple d’une pegmatite de type LCT (Li–Cs–Ta) dans le socle de Meguma en Nouvelle-Écosse, Canada, a été mis en place dans les roches métasédimentaires et métavolcaniques du Groupe de White Rock...
FIGURES | View All (6)
PDF
Purchase
Add to Citation Manager
Journal Article

NATURE AND ORIGIN OF AN LCT-SUITE PEGMATITE WITH LATE-STAGE SODIUM ENRICHMENT, BRAZIL LAKE, YARMOUTH COUNTY, NOVA SCOTIA. I. GEOLOGICAL SETTING AND PETROLOGY

Daniel J. Kontak
Published: 01 June 2006
The Canadian Mineralogist (2006) 44 (3): 563–598.
DOI: https://doi.org/10.2113/gscanmin.44.3.563
...Daniel J. Kontak Abstract The Brazil Lake pegmatite, in Yarmouth County, Nova Scotia, enriched in Li, Ta and Rb, conforms to the LCT-suite classification. The pegmatite group, dominated by two subvertical sheets, is hosted by Silurian sedimentary and mafic volcanic rocks that were deformed...
FIGURES | View All (19)
PDF
Purchase
Add to Citation Manager
Image

Regional geological setting of the Brazil Lake pegmatite (BLP) located in t...

Published: 01 August 2009
F ig . 1. Regional geological setting of the Brazil Lake pegmatite (BLP) located in the southwestern part of the Meguma Terrane, Nova Scotia (after White et al . 2001 ). The location of the formerly producing East Kemptville Sn–(Cu–Au–Ag) deposit (EK) and the extent of regional shear-zones
Image

(a) Map of the Brazil Lake pegmatites and structural model for their emplac...

Published: 01 August 2009
F ig . 2. (a) Map of the Brazil Lake pegmatites and structural model for their emplacement (modified after Kontak 2006 ). Note that the southern pegmatite is the area for the present study. (b) Plan map of part of the southern pegmatite at Brazil Lake showing the two stages of development
Image

Photographs of outcrops of the southern pegmatite at Brazil Lake. (a) Quart...

Published: 01 August 2009
F ig . 3. Photographs of outcrops of the southern pegmatite at Brazil Lake. (a) Quartzite of the White Rock Formation with hydrothermal tourmaline. The white area around the tourmaline is due to bleaching or alteration attending development of tourmaline. Note that the scale card
Image

STABLE ISOTOPE DATA FOR MINERAL SEPARATES FROM THE BRAZIL LAKE GRANITIC PEG...

Published: 01 August 2009
TABLE 1. STABLE ISOTOPE DATA FOR MINERAL SEPARATES FROM THE BRAZIL LAKE GRANITIC PEGMATITE, NOVA SCOTIA
Image

(a) Geological setting of the Brazil Lake pegmatites (modified after map of...

Published: 01 June 2006
F ig . 2. (a) Geological setting of the Brazil Lake pegmatites (modified after map of D. Black, Champlain Resources Inc., 2003) showing location of the most prominent pegmatites in the area, the northern and southern pegmatites. Inset diagram shows structural model for emplacement of subvertical
Image

Border zone of the southern pegmatite, Brazil Lake. (a) Spodumene megacryst...

Published: 01 June 2006
F ig . 5. Border zone of the southern pegmatite, Brazil Lake. (a) Spodumene megacrysts in upper right corner extend into and are in contact with smaller crystals of spodumene in a saccharoidal-albite-rich aplitic area with quartz grains adhering to spodumene grains. Note that the long dimensions
Image

Features of spodumene (Spd) in southern pegmatite, Brazil Lake. Knife scale...

Published: 01 June 2006
F ig . 7. Features of spodumene (Spd) in southern pegmatite, Brazil Lake. Knife scale ca. 8 cm long. (a, b) Outcrop dominated by Spd megacrysts (highlighted by black lines) oriented perpendicular to pegmatite-wallrock contact. Figure 7b is closeup of Figure 7a. (c) Intergrowth of Spd and BKF
Image

Petrological features of the southern pegmatite, Brazil Lake. (a) Thin sect...

Published: 01 June 2006
F ig . 8. Petrological features of the southern pegmatite, Brazil Lake. (a) Thin section of saccharoidal albite material formed from replacement of primary Kfs megacryst. Note alignment of albite laths, but lack of any strain. (b) Closeup of zone of beaded quartz texture (BQT) developed between
Image

COMPOSITION OF BULK K-FELDSPAR SEPARATES, BRAZIL LAKE PEGMATITE, NOVA SCOTI...

Published: 01 June 2006
TABLE 1. COMPOSITION OF BULK K-FELDSPAR SEPARATES, BRAZIL LAKE PEGMATITE, NOVA SCOTIA
Image

TRACE-ELEMENT DATA ON MUSCOVITE SEPARATES, BRAZIL LAKE PEGMATITE, NOVA SCOT...

Published: 01 June 2006
TABLE 3. TRACE-ELEMENT DATA ON MUSCOVITE SEPARATES, BRAZIL LAKE PEGMATITE, NOVA SCOTIA
Image

ELECTRON-MICROPROBE DATA ON MINERAL PHASES IN THE BRAZIL LAKE PEGMATITE, NO...

Published: 01 June 2006
TABLE 4. ELECTRON-MICROPROBE DATA ON MINERAL PHASES IN THE BRAZIL LAKE PEGMATITE, NOVA SCOTIA
Image

WHOLE-ROCK COMPOSITION OF WALLROCK UNITS, BRAZIL LAKE PEGMATITE, NOVA SCOTI...

Published: 01 June 2006
TABLE 5. WHOLE-ROCK COMPOSITION OF WALLROCK UNITS, BRAZIL LAKE PEGMATITE, NOVA SCOTIA
Image

Back-scattered-electron images of Brazil Lake pegmatite showing symplectiti...

Published: 01 June 2006
F ig . 12. Back-scattered-electron images of Brazil Lake pegmatite showing symplectitic textures. (a) Quartz–spodumene intergrowth between muscovite (Ms) and albite (Ab). Boxed area is enlarged in next Figure. (b) Detail of symplectitic texture of intergrown quartz (light grey) and spodumene
Image

Petrological features of Brazil Lake pegmatite. (a) Margin of Kfs megacryst...

Published: 01 June 2006
F ig . 13. Petrological features of Brazil Lake pegmatite. (a) Margin of Kfs megacryst with intergranular material of secondary bladed albite. Note the delicate nature of the albite (Ab) and books of primary muscovite (Ms). (b) Closeup of quartz – bladed albite intergrowth. This texture may have
Image

Muscovite compositions from Brazil Lake plotted in the triangular diagram o...

Published: 01 June 2006
F ig . 14. Muscovite compositions from Brazil Lake plotted in the triangular diagram of Monier & Robert (1986) , along with isotherms. There are no compositional differences among the varieties of muscovite (see text); thus they are all plotted together. Abbreviations are Cel: celadonite
Image

Summary of mineral paragenesis for major mineral phases in the Brazil Lake ...

Published: 01 June 2006
F ig . 19. Summary of mineral paragenesis for major mineral phases in the Brazil Lake pegmatite.
Journal Article

Microbially induced pseudotraces from a Pantanal soda lake, Brazil: Alternative interpretations for Ediacaran simple trails and their limits

L.V. Warren, L.A. Buatois, M.G. Mángano, M.G. Simões, M.G.M. Santos, D.G. Poiré, C. Riccomini, M.L. Assine
Journal: Geology
Published: 29 May 2020
Geology (2020) 48 (9): 857–861.
DOI: https://doi.org/10.1130/G47234.1
...L.V. Warren; L.A. Buatois; M.G. Mángano; M.G. Simões; M.G.M. Santos; D.G. Poiré; C. Riccomini; M.L. Assine Abstract Despite the absence of metazoans, structures resembling animal traces are common in a soda lake from the western Brazil Pantanal wetland. Pantanal soda lakes are ecologically extreme...
FIGURES
PDF
Purchase
Add to Citation Manager