 | | Report (chapter) | | 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...and syenite, and plutons of peralkaline syenite, quartz syenite and granite, together with dykes compositionally...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 |  | | Journal (article/letter/editorial) | | radiating or platy, from the western flank of Masokani Hill, 9 miles NNW. of Sultan Hamud, Machakos District...grown in a small vug or pccket, associated with quartz and, to a lesser extent, platy ilmenite and goethite...one specimen (B.M. 1944,107) the riebeckite and quartz grow out of a highly weathered granitic rock, largely...consisting of microcline microperthite, with some quartz and riebeckite. In 1946, a magnificent specimen...riebeckite prisms intergrown with and included in large quartz crystals, of total weight 97 lb (fig. 1), was presented |  | | Corporate Document | | Republic of Malawi Ministry of Mining Final Report of the Project for Establishment of Integrated Geographic...Ltd. dummy Frontispiece 1 Map of Malawi Former capital: Zomba Headquarters of Geological Survey Department...Lake Chilwa located in the southeastern part of Malawi and Chisi Island: Chisi Island is composed of syenite...Lake Malawi Upper right: Syenite distributed in Chilwa Alkaline Province in the south of Malawi (Cretaceous.............................. 19 3. The Works in Malawi .............................................. |  | | Journal (article/letter/editorial) | | rocks as far as the major minerals, K-Na feldspar, quartz and mica and their granular textures are concerned...Barren pegmatites are composed only of feldspar, quartz and mica, whereas rare-element pegmatites contain...A-type granite composed of K feldspar, plagioclase, quartz, biotite and muscovite (Fig. 3a) (Galliski and...Unlike the Argentine counterparts, tabular barren quartz-muscovite-feldspar pegmatites do not stand out...morphologically outward appearance of a moderate depression in hill slopes (Fig. 3e). The New Aplite at Pleystein, SE |  | | 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...carbonatites, kimberlites and lamprophyres from southern west Greenland: recurrent alkaline magmatism during |  | | Book (edition) | | Department of Mines and G. E. Parsons (1961) : Malawi Geological Survey and M. S. Garson and W. C. Smith...Tanzania Geological Survey and N. J. Guest (1954) : Malawi Geological Survey and M. S. Garson and W. C. Smith...Bailey and J. F. Schairer (1964) Figure 10-17: Malawi Geological Survey and M. S. Garson and W. C. Smith...15-19: Malawi Geological Survey and M. S. Garson and W. C. Smith (1958) Figure 15-25: Malawi Geological...Jr., completed most of the field work on the Iron Hill complex of Gunnison County, Colorado, in 1912-1913 |  | | Journal (issue) | | The Northern Ridge . The Speke Gneiss . . The Southern Ranges . History of the Dislocations . Date of...much the same pattern of forces has acted in the region from the earliest (Ubendian) diastrophism and successive...NNE-SSW, is in strong contrast to that of the southern ranges with E-W strikes forming a wide arc concave...half its periphery: only the south-eastern and southern margins fade rapidly in successive ranges of foothills...rift valleys, was observed. The E-W strike of the southern ranges is attributed to a revival of movement |  | | Journal (volume) | | Rhexoxylon and Dadoxylon from the Lower Shire Region of Nyasaland and Portuguese East Africa . By Professor...Problems in Arid Regions in the British Colonies and Southern Africa. By F. Dixey, C.M.G., O.B.E. , D.Sc., F...Some Aspects of the Geomorphology of Central and Southern Africa The Mining Journal, Annual Review - 1956...Potentialities of Southern Africa Barytes in Tanganyika . The Determination of Southern Rhodesian Economic...REVIEWS The Cretaceous Ammonoidea of Southern Nigeria and the Southern Cameroons. By R. A. Reyment, M.Sc |
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