 | Thomas, Robert J., Roberts, Nick M.W., Jacobs, Joachim, Bushi, Alphonce M., Horstwood, Matthew S.A., Mruma, Abdul (2013) Structural and geochronological constraints on the evolution of the eastern margin of the Tanzania Craton in the Mpwapwa area, central Tanzania. Precambrian Research, 224. 671-689 doi:10.1016/j.precamres.2012.11.010 | Journal (article/letter/editorial) | | the eastern margin of the Tanzania Craton in the Mpwapwa area, central Tanzania Robert J. Thomas a,â , Nick...Abdul Mruma d a British Geological Survey, Nicker Hill, Keyworth, Nottingham NG12 5GG, UK NERC Isotope...Bergen, Norway d Geological Survey of Tanzania, Dodoma, Tanzania b a r t i c l e i n f o Article history:...Available online 15 November 2012 Keywords: Archaean Tanzania Craton Palaeoproterozoic Usagaran Geochronology...and geochronology of the eastern margin of the Tanzania Craton near Mpwapwa yields new constraints on |  | | Journal (article/letter/editorial) | | for the type locality at 2 5.7 0.3 4 18 2 Mautia Hill, Tanzania, i.e. Mg Al Fe Si O (OH) . Textural relationships...âwhiteschistâ in the Usagaran Complex, exposed in Mautia Hill, Tanzania (McKie, 1959; Mruma & Basu, 1987). Nd model...Whiteschist Formation after the nearby Kadunguri Hill, grid reference ST 9619 3497). Aeromagnetic maps...blocks situated within the outlined ellipsoidal region. Position X marks a small exposure where the boundary...Chewore green yoderite, the optical properties of Mautia Hill green yoderite are very similar, e.g. a/b sections |  | | Journal (article/letter/editorial) | | first was discovered by McKie (1959) at Mautia Hill (Tanzania), while the second was discovered by Johnson...green variety is Mn3+absent and found in the Mautia Hill and Chewore Hills whiteschists, with the approximate...purple variety of yoderite is restricted to Mautia Hill whiteschists, differing from green yoderite by...whiteschist. This variety is also reported to occur at Mautia Hill, though yoderite at this locality is predominantly...2] (Table 1). Natural yoderite formation at Mautia Hill was ascribed to the end-member reaction yoderite+quartz |  | | Report (issue) | | or Space Group: X-ray Powder Pattern: Mautia Hill, Tanzania (5H). 2.43 (vs), 1.426 (s), 2.49 (ms), 2...Corundum, ferroan spinel, magnetite, ilmenite, rutile, nigerite, sapphirine, sillimanite, cordierite... Ireland. On Mautia Hill, Tanzania. At the Linganga deposit, Njombe district, Tanzania. From Tsaobis...India, at Kajlidongri and Sitapar, Chhindwara district, Madhya Pradesh; in the Nagpur and Balaghat districts...Langenberg, Saxony, Germany. From Inken, Tiovine region, Morocco. In the USA, in the Artillery Mountains |  | | Journal (article/letter/editorial) | | amphibolite from the Paleoproterozoic Usagaran Belt, Tanzania Keiko MORI*, Tatsuki TSUJIMORI*,** and Nelson...Geology, University of Dar es Salaam, Dar es Salaam, Tanzania ** We report a newly discovered assemblage of...of the Paleoproterozoic Usagaran Belt, central Tanzania. The amphibolite is characterized by the mineral...assemblage of clinoamphibole, kyanite, talc with minor rutile, quartz, dolomite, and rare barite. The high Fe3+/(Fe3+...Amphibolite, Highâpressure metamorphism, Usagaran Belt, Tanzania INTRODUCTION Occurrence of talc in crustal composition |  | | Journal (article/letter/editorial) | | existence in the yoderite-bearing schist of Mautia Hill, Tanzania, had been deduced petrographically [7]....Afghanistan ages [ 11 ]. This indicates that the region was affected by several orogenetic events. The...cannot be distinguished microscopically from talc. Rutile is an occasional accessory. 4. Petrogenesis Although...examples of similar chemistry the rocks from Mautia Hill, Tanzania [7], and the ThorOdin Dome, British Columbia...e Sang rock which it has in common with the Mautia Hill occurrence is the close association of the talc |  | Grew, Edward S., Pertsev, Nikolai N., VrĂĄna, Stanislav, Yates, Martin G., Shearer, Charles K., Wiedenbeck, Michael (1998) Kornerupine parageneses in whiteschists and other magnesian rocks: is kornerupine + talc a high-pressure assemblage equivalent to tourmaline + orthoamphibole?. Contributions to Mineralogy and Petrology, 131 (1) 22-38 doi:10.1007/s004100050376 | Journal (article/letter/editorial) | | six localities worldwide, but only at Chilapila Hill in the LuÂźlian Arc, Zambia do textural relationships...assemblage has also been reported from Mautia Hill, Tanzania (P ÂŁ 13 kbar). In order to estimate possible...kyanite. A reaction relating the Mulvoj and Chilapila Hill (Krn + Tlc + Ky + Qtz + Tur) parageneses is calculated...metamorphic pressures estimated for Mulvoj and Chilapila Hill, Krn + Tlc is inferred to be favored by increasing...least one of the phases in the Mulvoj and Chilapila Hill whiteschists (e.g., Krn contains 0.24±0.67 wt% BeO) |  | | Journal (article/letter/editorial) | | coll. 78123) (Harker coll. 78125) 14. Mautia Hill, Tanzania (McKie 1963) 15. Labwor Hills, Uganda (coll...feldspar, gt garnet, qz quartz, hb hornblende, ru rutile, hm hematite, si sillimanite, ilm ilmenite, sp...only; 5 (Val Codera) 2 M and 1Tc peaks; 14 (Mautia Hill) - lTc peaks only; 23 (Mt. Riiser-Larsen) - Diffuse...state in the yellow sapphirine from M a u t i a Hill, in agreement with the Mossbauer data of Bancroft...1979), but other Mossbauer spectra obtained for Mautia Hill sapphirine (Bancroft et al. 1968) and synthetic |  | | Report (issue) | | = 6.715(2) Z=4 X-ray Powder Pattern: Mautia Hill, Tanzania. 2.639 (100), 3.03 (80), 3.37 (60), 2.118...biotite, phlogopite, magnetite, ilmenite, hematite, rutile. Distribution: Some localities for well-studied...In Germany, from Waldheim, Saxony. From Mautia Hill, Tanzania. On the Bok se Puts Farm, Namaqualand, Cape |  | | Journal (article/letter/editorial) | | yoderite-bearing talc-kyanite-quartz schist from Mautia Hill, Tanzania (McKie, i958 ) is, as far as the authors...Hematite is frequently present, usually accompanied by rutile. The high oxygen fugacity indicated by the oxide...schist within this unit is on and around Chilapila Hill, 29 ~ 22' E., I 5 ~ 39' S., overlooking the Zambesi...it has not proved possible to return to Chilapila Hill for more detailed sampling. Preliminary information...grains, tabular or irregular in shape, and brown-red rutile are ubiquitous accessories. Tourmaline may occur |  | | Journal (article/letter/editorial) | | (1959) in the famous yoderite locality Mautia Hill, Tanzania. On the basis of textural evidence McKw~...separated by yoderite (Fig. 3) are both present in Mautia Hill, this metasedimentary rock represents the first...in the unusual Allalin metagabbro of the Zermatt region, Switzerland. The complex reaction relationships...(Ky). Q = quartz. Parallel nieols. - - Mautia Hill, Tanzania. Specimen courtesy of D. McKIE. Fig. 4...opaqueappearing minerals (rutile, hematite). Parallel nieols. - - Chilapila Hill, Chongwe river area, Zambia |  | | Book | | GEMSTONES of East Africa Burundi, Kenya, Rwanda, Tanzania and Uganda Bruce Cairncross Published by Struik...Page 5: (top) Reticulated aggregates of twinned rutile crystals partially included in transparent quartz...resources 12 Burundi 13 Kenya 14 Rwanda 16 Tanzania 17 Uganda 20 Gemological properties 21 A to...through Tanzania, Kenya, Ethiopia and into the Sudan - has blessed East Africa, Kenya and Tanzania, with...starting in what was then Tanganyika ( now mainland Tanzania) and then progressing to Kenya - I am proud to |  | | Journal (article/letter/editorial) | | spinel-free paragenesis in u magnesian skarn at Mautia Hill, Tanganyika. Another new occurrence in an aluminous...crystallized hSgbomite in magnesium-rich skarns at Mautia Hill, Tanganyika, in the course of which it became...Castor (1) August (1) Perseus (1) Whittles (2) Mautia* (6) Transvaal-A (1) Macon Co. (1) Cortlandt (2)...79538. 6. Mautia Hill, Mpwapwa District, Tanganyika. 88280. 7. Dentz Farm, Letaba district, Transvaal...Galway, Ireland. 88283. l l . Dentz Farm, Letaba district, Transvaal (Nel, 1949). 19629. * Unit-cell dimensions |  | | Journal (article/letter/editorial) | | Kondapalli, chromite, bronzite, 4o6 and M38 Seshadripuram Hill, Kondapalli, pargasite, 28o and M31 Gujarat Amba...magnetite, 463 Dhajala, Surendranagar District, meteorite, 493 Donabanda Hill, allanite, 28o and M3I Burma Mogok...5 I8 TOPOGRAPHICAL Indonesia Pomalea-Kolska district, Sulawesi, lateritic Ni ore, I43 and M4, 513 Japan...Kaduna, microcline, 443 Kenya Homa Mtn.; Kiahera Hill, Rusinga Island; Koru; and Rangwa, magnetite, carbonatite...River, tapiolite, 477 Tanzania Galapo and Marongwe crater, magnetite, 463 Mautia Hill, talc, Io7 INDEX |  | | Journal (article/letter/editorial) | | Namaqualand, South Africa Madras, India Vishakhapatnam District, India 7563 89789 86875 b2I 86878 b2 89790 JAS-I...plagioclase, P h i = phlogopite, Q t = quartz, R t - rutile, Sa = sapphirine, S i = sillimanite, Sp = spinel...1973). Similar data for a sapphirine from Mautia Hill, Tanzania, were assembled from the works of McKie...sapphirine. It should be pointed out that the Mautia Hill sapphirine is anomalous in that all the Fe 3+...All other sappbirines are P 21/a ture. In the Mautia Hill sapphirine with all Fe 3+ assigned to tetrahedral |  | | Journal (article/letter/editorial) | | dolomite marble and yoderitequartz-talc schist on Mautia Hill, Tanganyika. It has refractive indices a 1-725:j=...transformation of single crystals of partially ordered Mautia sapphirine to single crystals of a defect spinel...heat treatment. A P P H I R I N E occurs at Mautia Hill, Tanganyika, in e n s t a t i t e h o r n b l...exposed ground j u s t n o r t h of the crest of t h e hill. The sapphirinebearing rocks, which are associated...2+ and A13+. The limiting refractive indices of Mautia sapphirine, ~ 1.725J=0.002 and y 1.732=t=0.002 |  | | Journal (article/letter/editorial) | | diffraction patterns of sapphirine. Material from Mautia Hill, Tanzania, had been found by McKie (1963) to display...aenigmatite, Na2F%TiSi602o, re-interpreted the Mautia Hill diffraction behaviour as resulting from intergrowth...Merlino 1973). This has since been observed in Mautia Hill material also (McKie pers. comm. 1985). Merlino's...1 SYN 1 SYN 5 SYN 15 Val Codera, Italy Mautia Hill, Tanzania Naxos, Greece Finero, Italy 1450 ° C, 1...p h l = phlogopitic mica; plag=plagioclase; ru=rutile; sil=sillimanite; spl = spinel Note: The accompanying |  | | Journal (article/letter/editorial) | | a sapphirine-bearing rock from the Fiskenaesset region, W. Greenland D. ACKERMAND Mineralogisches Institut...sapphirine, rutile, hfgbomite and corundum. H6gbomite forms 200 #m grains often associated with rutile, surrounded...suggested by the textures are: 1. Gedrite + spinel + rutile --* sapphirine + hfgbomite + chlorite. 2. Sapphirine...spinel. 3. H6gbomite --* rutile + corundum + spinel. In some areas without rutile or h6gbomite the reaction...geological map of the NW Angnertussoq area, Fiskenaesset region showing the h6gbomite sapphirine locality. 556 |  | | Journal (issue) | | âSugarcane Emeraldâ from Brazil âą Orange kyanite from Tanzania âą Rare optical phenomenon in play-of-color opal...Dona Dirlam wrote part of her 1992 âGem Wealth of Tanzaniaâ article sitting at my backyard patio table, while...gemological occurrence of pegmatitic gems in the region, as well as research. Based on his decade of experience...Dirlam et al. surveyed the colored stone wealth of Tanzania. Adolph Peretti and coauthors provided the authoritative...~300 nm and absorbed strongly in parts of the IR region (specifically the range 7000â20000 nm). The smaller |  | | Journal (article/letter/editorial) | | minerals, 4th supplementary list of, I69 Broken Hill, New South Wales, ilvaite, rhodonite, hydrogrossular...twinning, post-growth readjustment of, 288 Cedar Hill, Pennsylvania, deweylite, 75 Celadonite, Bohemia...abnormal morphology from volcanic carbonatites in Tanzania, Kenya, Greenland, and India, 463 Deccan, India...talc-like mineral, 282 Dhajala, Surendranagar District, Gujarat, India, meteorite, 493 Diabantite, New...as inclusions in cordierite, anal., 48I Donabanda Hill, Kondapalli, Andhra Pradesh, India, allanite, 28o |  | | Journal (article/letter/editorial) | | Benson Mine District, Adirondack Mountains, New York and the Manitouwadge Massive Sulfide District, Ontario...(Sil)-quartz (Qz)-hercynite (Hc)-corundum (Cor)-rutile (Ru). At Manitouwadge, F e - Z n h6gbomite is found...obscured by its optical resemblance to rutile, because h6gbomite (like rutile) is dark brown and uniaxial negative...negative. H6gbomite can be distinguished from rutile by its lower relief, distinct pleochroism, hexagonal...grains and tendency to be intergrown with spinel. Rutile is readily distinguished from h6gbomite by its |  | | Journal (article/letter/editorial) | | high-pressure granulites of the Pan-African belt in Tanzania (Uluguru Mts): a record of prograde to retrograde...Mountains are part of the Pan-African belt of Tanzania, the metamorphic evolution of which is characterized...belong to the high-grade metamorphic complexes in Tanzania which, like Furua, the Pare- and Usambara-Mountains...for the Pare- and Usambara-Mountains in northern Tanzania (Fig. 3): 1. Rare kyanite and staurolite inclusions...Schematic map of the main geological units of eastern Tanzania. Shaded areas represent the high-pressure granulites |  | | Journal (article/letter/editorial) | | in the extended history of the Zambezi Belt this region was subject to tectonothermal regimes similar to...kornerupine, garnet, yoderite, haematite ± phengite, ± rutile. A longstanding problem surrounding these lithologies...understanding the development of this complex tectonic region, as they lie at the triple junction between the...lithologically diverse section is centred around Kadunguri Hill (GR[ST 9619 3498]) (Fig. 3). STRUCTURAL SETTING...long axes of the tabular kyanite laths, elongate rutile crystals and minor aggregations of quartz. The |  | | Journal (article/letter/editorial) | | talc, kyanite, garnet, omphacite, Ca-amphibole, rutile and in some sections clinozoisite and carbonate...manganian andalusite in the whiteschists of Mautia Hill, Tanzania (McKie 1959; JoÌns and Schenk 2004) indicate...elevated amounts of Mn3? in silicates of the Mautia Hill whiteschists indicate a very high oxygen fugacity...architecture of a 1.9 Ga marine volcanic arc, Skellefte District, Sweden. Econ Geol 91:1022â1053 Aranovich LY,...the Kristineberg volcanogenic massive sulfide district, Sweden. Mineral Dep 38:423â442 Hermann J (2003) |  | TENCZER, V., HAUZENBERGER, C. A., FRITZ, H., HOINKES, G., MUHONGO, S., KLĂTZLI, U. (2011) The P-T-X(fluid) evolution of meta-anorthosites in the Eastern Granulites, Tanzania. Journal of Metamorphic Geology, 29 (5) 537-560 doi:10.1111/j.1525-1314.2011.00929.x | Journal (article/letter/editorial) | | of meta-anorthosites in the Eastern Granulites, Tanzania V . T E N C Z E R , 1 C . A . H A U Z E N B E...Geology, University of Dar es Salaam, Dar es Salaam, Tanzania 3 Center for Earth Sciences, University of Vienna...constituents of the Neoproterozoic Eastern Granulites in Tanzania. The mineral assemblage (and accessory components)...garnet, amphibole; scapolite, epidote, biotite, rutile, titanite, ilmenite and quartz. Within the feldspar-rich...Granulites; Mozambique Belt; PâTâX evolution; Tanzania. INTRODUCTION Although anorthosites are unique |
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