Results 1 to 10 of about 193 (140)

Postorogenic alkali feldspar granite and associated pegmatites in West Avalonia: the petrology of the Neoproterozoic Georgeville Pluton, Antigonish Highlands, Nova Scotia

Canadian Journal of Earth Sciences, 1998
The 579.8 ± 2.2 Ma (40Ar-39Ar, muscovite) Georgeville Pluton in mainland Nova Scotia is an epizonal body consisting of alkali feldspar granite and related pegmatite. The pluton intrudes the ca. 619-608 Ma arc-related rocks of the Georgeville Group, which comprises part of West Avalonia, the largest terrane in the Canadian Appalachians.
J. Brendan Murphy, Alan J. Anderson, Doug A. Archibald   +2 more
openaire   +1 more source

Extreme alkali bicarbonate- and carbonate-rich fluid inclusions in granite pegmatite from the Precambrian Rønne granite, Bornholm Island, Denmark

Contributions to Mineralogy and Petrology, 2010
Our study of fluid and melt inclusions in quartz and feldspar from granite pegmatite from the Precambrian Ronne granite, Bornholm Island, Denmark revealed extremely alkali bicarbonate- and carbonate-rich inclusions. The solid phases (daughter crystals) are mainly nahcolite [NaHCO3], zabuyelite [Li2CO3], and in rare cases potash [K2CO3] in addition to ...
Thomas, R., Davidson, P., Schmidt, C.
openaire   +3 more sources

New investigations on Dunje pegmatite, Macedonia I: the contribution to the knowledge about alkali feldspars and its mineral paragenesis

Geologica Macedonica, 2016
Selečka Mountain was thoroughly investigated in the past mostly because of the interesting mineral paragenesis presented in granites, gneisses, amphibolites, different schists and pegmatite bodies. In the valley Smilevski Dol, around 3 km SW from the village of Dunje (Mariovo plateau), in the vicinity of small spring Šohlehov Kladenec hydrothermal ...
Zebec, Vladimir, Mikulčic Pavlakovic, Snjezana, Soufek, M., Boev, Blazo, Boev, Ivan, Bermanec, Vladimir   +5 more
openaire   +3 more sources

Alkali-rich replacement zones in evolved NYF pegmatites: metasomatic fluids or immiscible melts?

2019
The attached document is the authors’ submitted version of the oral presentation. You are advised to consult the publisher’s version if you wish to cite from it.
Muller, A, Spratt, J, Thomas, R, Williamson, BJ, Seltmann, Reimar   +4 more
openaire   +1 more source

Mineralogy and geochemistry of pegmatites rich in REE, F and alkali metals associated with albite granite facies in the deposit of Sn-Nb-Ta- (F, REE, U, Th) Madeira (Pitinga mine, AM, Brazil)

2018
According to the literature, the pegmatites of Madeira granite, located in the mining district of Pitinga (Amazonas, Brazil), belong to the albite granite facies. Previous studies have proposed that these pegmatitic bodies are associated with N320/60SW oriented faults and are rich in rare earth elements (REE). Due to this, the characterization of these
PALUDO, Carina M., BASTOS NETO, Artur C., PEREIRA, Vitor P., BOTELHO, Nilson F.   +3 more
openaire   +1 more source

Geochemical and Sr–Nd–Li isotopic constraints on the genesis of the Jiajika Li-rich pegmatites, eastern Tibetan Plateau: implications for Li mineralization

Contributions To Mineralogy and Petrology, 2021
Rui Cao, Cao Rui
exaly  

Garnet as Indicator of Pegmatite Evolution: The Case Study of Pegmatites from the Oxford Pegmatite Field (Maine, USA)

Minerals (Basel, Switzerland), 2021
Encarnacion Roda-Robles, William B Simmons, Karen L Webber   +2 more
exaly  

Minerals of the gadolinite-(Y)-hingganite-(Y) series in the alkali granite pegmatites of the Kola Peninsula

Geology of Ore Deposits, 2015
Ekaterina A Selivanova, Yevgeny E Savchenko, Dmitry Zozulya   +2 more
exaly  

Microtexture and micro FT-IR spectra of alkali feldspar from a pegmatite, the Tanakami pluton, Shiga, Japan

Abstracts for Annual Meeting of the Mineralogical Society of Japan, 2003
Nakano, Satoshi, Ohkuma, Makoto, Makino, Kuniaki   +2 more
openaire   +1 more source

Origin of miarolitic pegmatites in the Königshain granite/Lusatia

Lithos, 2016
Rainer Thomas, Paul Davidson
exaly