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| ........................................... 206 Peru...................................................numbered rectangle rather than a dot. State, province etc. These are quoted for a number of countries...helped with useful i n formation on the V la co Province ments suggested by my colleague D.R.C. Kempe,...five agglomerate vents, about 75 dykes and sm all plugs, as well as several sills, within a n a rea of 4...types are nephe linite, basani te, basalt and phonolite. Oli vine nephelin ites a re t h e most abundant |
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| Omaruru Area, Northern Central Zone of the Damara Province. - Unpubl. rep., Geol. Surv. Namibia, 48pp. in...nearby Klein Spitzkuppe Geology minor dykesand plugs of lamprophyre and The Erongo is a typical well-preserved...from Tubussis22. The colour of the up to 20 mm andradite garnet crystals varies from bluegreen, leaf green...excellent crystals. Minerals Tubussis Albite Andradite var. demantoid Beryl Calcite Clinozoisite Diopside...:?'-.:.l~~ ~-~k- . .... . - ·- ~ Fantastic andradite var. demantoid, some of which is excellent cutting |
 | | Journal (article/letter/editorial) |
| in Miocene times with intrusion of trachyte-phonolite plugs which have been dated by Grant et al. (1972)...between 22–11 Ma and continued with the magmatic province of the Biu Plateau. According to Turner (1978)...Recent volcanics also include one occurrence of phonolite, which contains inclusions of spinelperidotite...xenoliths (1 cm) Koroko 1050’22 N 1156’70 E Phonolite, small xenoliths Krater SW Pelamabelu Hill (Pela...almandine (14–23 wt%), grossular (5– 10 wt%) and andradite. The crystals display the same homogeneous nature |
 | | Report (volume) |
| the Malani Igneous Suite and Tertiary Alkaline Province of western Rajasthan Dr. S.K. Shushan • Dr...granites occurring as plutons, ring dykes, bosses and plugs form the second phase. The third phase is intrusive...and textures. The younger magmatic event of the province in Rajasthan is represented by hyperalkaline (Tertiary)................................ GEOLOGY OF THE PROVINCE Granites . . . ....... ...................... .................... Alkaline rocks of the province Carbonatites ......................... . . |
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| along the rift but at a distance from it. The phonolite plugs and other intrusive forms along the East African...they are rift related. Phonolite is a name used for igneous rocks of the phonolite-nepheline syenite group...smaller forms of igneous intrusives such as stocks, plugs, sills, dikes, laccoliths, pipes, chimneys, and... THE Older batholiths: Stocks: Pipes: Chimneys: Plugs or stubs: Dikes: Sills: Laccoliths: Lopoliths...carbonatite. THE GREAT AMERICAN RIFT 7 Phonolite, nepheline syenites, and alkalic rocks, such as |
 | | Report (issue) |
| Investigations • • 9. Technical Co-operation in Jordan and Peru • V • • • • • • • • • • • • • • • ...continued to serve with the Geological Survey of Peru. During the period 1 1 th-2 l st October a party...EsQ.. Patronite and qt1isqueite from Minas Ragra, Peru. PowELL, H. J., EsQ.., M.A. Coral Limestone from...differentiation trends in relation to the Tertiary Province and the Upper Mantle (in collaboration with Geology...not directly super vised by Overseas Division in Peru where five British geologists are engaged. 5. Geological |
 | | Book |
| across and, along its southem margin. satellite plugs of pyroxenite, dunite, syenite and nepheline syenite...marble are present (Blaine, 1977). Plutons and plugs of pink to white strongly gneissic granodiorite...adjoin•?g ~ne1ss 111 the east (Menge, 1986). A few plugs of t1tamferous magnetite occur in the complex and...are a characteristicassociation. Small irregular plugs and dyke-like bodies of reddish fineto medium-grained...amphibolite. The layered rocks are intruded by dykes. plugs and sills of pegmatoid amphibolite, coarse-grained |
 | | Report (issue) |
| Siberian flood basalt province in Russia, which is the largest flood basalt province in the world.........complexes that are part of the Nikolai large igneous province.................................................lithium-cesium-tantalum light-emitting diode large igneous province lowest observable effect limit log of oxygen fugacity...Antimony ore and concentrate Other 6% Other 11% Peru 3% China 23% Mexico 12% Italy 45% China 74%...States— Antimony The Xikuangshan deposit in Hunan Province, China, is China’s leading source of antimony |
