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| | Journal (article/letter/editorial) | | northern part of the Chilwa alkaline
province, Malawi
A. R. Woolley & G. C. Jones
S U M M A R Y: The...alkaline igneous rocks and carbonatites lies at the
southern end of the East African rift, and is unique within...reached the base of the crust and it was from this region that
trachyte magmas were produced by melting of...continuously from the Red Sea to just S of Lake
Malawi. At its southern extremity it breaks up
into a series of...erosion.
Although the province is centred on southern
Malawi, its rocks are also found in adjacent parts | 👁 Image
| | Journal (article/letter/editorial) | | vitreous smoky
quartz and decimetric white K-feldspar perthite crystals. Both
these minerals are elongated along...across
the interface from the brighter region to the darker gray region
there is a net decrease of U and Mn...was a clearly distinct bright-gray or
dark-gray region in SEM-BSE images could not be recognized,
either...Kragero, Norway (Tarantino and Zema 2005)
Zomba-Malosa, Malawi (Johnsen et al. 1999)
Elba Island, Italy...crystal (ixi) making a bridge between two amorphous region of samarskite-(Y) (sam). (b and c)
SAED patterns | 👁 Image
| Upton, B. G. J., Macdonald, R., Odling, N., Rämö, O. T., Bagiński, B. (2013) Kûngnât, revisited. A review of five decades of research into an alkaline complex in South Greenland, with new trace-element and Nd isotopic data. Mineralogical Magazine, 77 (4) 523-550 doi:10.1180/minmag.2013.077.4.11 | Journal (article/letter/editorial) | | review of five decades of research
into an alkaline complex in South Greenland, with new
trace-element and...November 2012; AE: T. Riley]
ABSTRACT
The Kûngnât Complex (12751.8 Ma) in the Gardar Alkaline Province,...peralkaline granites include the Zomba–Malosa complex,
Chilwa alkaline province, Malawi (Woolley and
Jones, 1987)...graben, Norway (Oftedahl,
1978), the Evisa-Calasima complex, Corsica
(Bonin, 1988), plutons of the Velasco...ringcomplexes (Bowden et al., 1987) and Center 1,
Coldwell Complex, Ontario (Mitchell and Platt,
1978; Platt and Mitchell | 👁 Image
| Guastoni, Alessandro, Secco, Luciano, Škoda, Radek, Nestola, Fabrizio, Schiazza, Mariangela, Novák, Milan, Pennacchioni, Giorgio (2019) Non-Metamict Aeschynite-(Y), Polycrase-(Y), and Samarskite-(Y) in NYF Pegmatites from Arvogno, Vigezzo Valley (Central Alps, Italy) Minerals, 9 (5) 313 doi:10.3390/min9050313 | Journal (article/letter/editorial) | | samarskite-(Y); Vigezzo valley
1. Introduction
Complex REE–Nb–Ta–Ti oxides (aeschynite-, euxenite-, and...non-metamict samarskite-(Y) from
Eifel volcanic region, Germany, revealed a unique cation-ordered niobate...related to layered,
Laacher See, Eifel volcanic region, Germany, revealed a unique cation-ordered niobate...is located in the Central Alps, within the
SSB (Southern Steep Belt) of the Alpine nappes. It extends for...a medium-grained intermediate unit composed of perthite
K-feldspar, flakes of silvery-green muscovite | 👁 Image
| | Report (volume) | | northern part of the Chilwa alkaline
province, Malawi
335
BOWDEN, P., BLACK, R., MARTIN, R. F., IKEI...EMELEUS, C. H. Mid-Proterozoic alkaline magmatism in southern
Greenland: the Gardar province
449
LARSEN, L...classic alkaline provinces, such as East Africa, southern Greenland
and the Kola Peninsula, are included...however. The Chilwa alkaline province in Malawi, at the southern end
of the rift, is an essentially intrusive...lithospheric
mantle is old and will have had as complex a metamorphic and magmatic history as the
overlying | 👁 Image
| | Book | | silicate that has been found only
in the Ilimaussaq complex in Greenland, although there it is relatively abundant...fine-grained mass. The rock illustrated is from a region near Oslo, Norway. Samples of it were brought to...nepheline-syenite from Kangerdluarsuk, the Ilimaussaq
complex, Greenland. The rock consists
mainly of feldspar...first described) or after a landscape, county, or region in which the type locality was
situated.
Aragonite...small
faces belonging to {110}, from the Gardiner complex,
Greenland. Field of view: 44 x 75 mm.
fore {hkl} | 👁 Image
| | Book (edition) | | Class 53 Insular SiO, Groups and Other Anions or Complex
Cations
Borosilicates and Some Beryllosilicates...followed in this
edition. The many and often very complex silicate minerals are here classified
for the first...may be less for simple structures or more for complex ones. Typically, the projection is down the shortest...but
ant
predomin
the
to
refers
label
The
true.
complex structures this may not be
by
species in a site...appearance of its surfaces in reflected
light. It is a complex property that depends on a mineral’s reflectivity; |
|
