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| | Journal (article/letter/editorial) | | composition of amphiboles may occur in a given complex. A
subtrend found only In oversaturated complexes...subhedral and have crystallized interstitially to quartz
and microperthite. They are all highly evolved...are found as plates that
poikilitically-enclose quartz and alkali feldspar.
They are mainly of arfvedsonitic...al.,
1980) consist predominantly of syenites and quartz
syenites with lesser amounts of granite. In the...variation of amphiboles from the Topsalls-St. Lawrence complex (Strong and Taylor, 1984) illustrated III
(a) the | 👁 Image
| | 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...with nepheline syenite
and nephelinite), large complexes of nepheline syenite and syenite, and plutons...plutons of peralkaline
syenite, quartz syenite and granite, together with dykes compositionally equivalent to...present: (1) syenitequartz syenite-granite, (2) nepheline syenite-syenite and (3) nephelinite-carbonatitenepheline | 👁 Image
| | Journal (article/letter/editorial) | | Punctuated anorogenic magmatism
A-type granite
Syenite
Post-collisional magmatism
Mineralization
Nigeria...anorogenic magmatism in the Chilwa Province of
Malawi, East African Rift
The Chilwa Province of alkaline...alkaline igneous rocks and carbonatites in
Malawi and neighboring Mozambique displays three major cycles...129–123 m.y., dominated by syenite and nepheline syenite, locally
with quartz syenite units. There are no obvious...(Eby et al., 1995,
2004), peralkaline syenite, quartz syenite and A-type (i.e., ferroan)
granite were | 👁 Image
| | Journal (issue) | | Baranda
Some pegmatite minerals from the
Zomba district, Malawi .........................................minerals
(facsimile: $10)
v.2/#2 Chessy (France), Blue
Quartz, Panasqueira (Portugal),
X-ray crystallography...Ill)
(facsimile: $10)
v.2/#5 Gold Hill (UT), Rose
Quartz, Grandview mine (AZ),
Crandallite (VA), Early American...Turkish Kammererite,
v.9/#6 Libethenite (Zambia),
Quartz & Pyrite (WA),
Hydroboracite (CA)
v.10/#1 Hydroxylherderite...(Chile)
v,10/#3 Taewha mine (Korea)
Japan Twins (Quartz),
Bancroft (Ont.), Franklin
$7
v.10/#4 Chanarcillo | 👁 Image
| Soman, Aneesh, Geisler, Thorsten, Tomaschek, Frank, Grange, Marion, Berndt, Jasper (2010) Alteration of crystalline zircon solid solutions: a case study on zircon from an alkaline pegmatite from Zomba–Malosa, Malawi. Contributions to Mineralogy and Petrology, 160 (6) 909-930 doi:10.1007/s00410-010-0514-2 | Journal (article/letter/editorial) | | on zircon from an alkaline pegmatite from Zomba–Malosa,
Malawi
Aneesh Soman • Thorsten Geisler • Frank...pegmatite from the Zomba–Malosa Complex of the Chilwa
Alkaline Province in Malawi has been studied by...solution-aqueous solution systems.
Keywords Zircon Thorite Malawi Hydrothermal
alteration Interface-coupled ...partially altered zircon from an alkaline pegmatite in
Malawi. Based on textural, chemical, isotopic/geochronological...Mt Malosa
located within the Zomba–Malosa Complex of the Chilwa
Alkaline Province (CAP) in Malawi. The | 👁 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,...intercumulus phases include alkali amphibole, biotite, quartz and calcite).
In the well dissected earlier stock...compositional nearcontinuum from olivine gabbro through syenite intermediaries to alkali granite, ascribed to protracted...contamination of the magmas.
K EY WORDS : Gabbro, syenite, layered intrusion, cumulates, ring-dyke, alkalic | 👁 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...Archaean. For example, biotites from the Poohbah Lake syenite in north-western Ontario
have been dated at around...however. The Chilwa alkaline province in Malawi, at the southern end
of the rift, is an essentially intrusive | 👁 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...Especially when the mineral species is common,
such as quartz (75.1.3.1), many varieties (jasper, onyx) are known...chemistry
and structure are identical to those of quartz.
5D. Polytypes
Materials whose basic structural...may be less for simple structures or more for complex ones. Typically, the projection is down the shortest |
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