 | | Report (issue) | | 816(1) c = 7.250(2) X-ray Powder Pattern: Mautia Hill, Tanzania. 3.50 (100), 3.03 (80), 2.61 (60), 2.00...11.83 [2.69] 0.36 [99.99] [99.03] (1) Mautia Hill, Tanzania; Fe2+ :Fe3+ from MÄo ssbauer spectroscopy...98 : Occurrence: A major phase in quartz-kyanite-talc schist formed under conditions of »10 kbar H2 O...Distribution: Kyanite, talc, hematite, quartz. On Mautia Hill, Kongwa, Central Province, Tanzania. Name: For Hatten...D.C., USA. Type Material: Geological Survey of Tanzania, JH 2563/2, JH 2563/14; National Museum of Natural |  | | Journal (article/letter/editorial) | | hydrous magnesium iron aluminosilicate from Mautia Hill, Tanganyika. (With Plate XI.) By DUNCANMcKm,...occurs in a quartz_][_ yoderite-kyanite-talc schist at Mautia Hill (6~ 889 S., 36~ 29' E.), 6 miles north-east...former Groundnut Scheme headquarters at Kongwa, Mpwapwa District, Central Province, Tanganyika Territory...Territory. The general geology of the district has been described by Temperley (1938), who regarded (p. 40)...petrology of Mautia Hill is in course of preparation by the author and J. R. Harpum. Mautia Hill is an east-west |  | | Journal (article/letter/editorial) | | molybdenite(?), pyrite, sulphur, tachhydrite(?),talc, tamarugite(?), thenardite, 172 Blaen-y-Nant, Nant...thomsonite, 506 Berk Hill: apophyllite, 508 Black Cave, Islandmagee: mordenite, 5O9 Carnmoney Hill, Belfast: calcite...lithomarge, xlvi White Mountain: mordenite, 509 Wolf Hill, Legoniel: apophyllite, 508 Tipperary Knockanroe...Knockanroe and Ballygown South mines, Silvermines district: pyrite, marcasite, arsenopyrite, blende, galena, baryte... 136 Shallee and Gortadyne mines, Silvermines district: pyrrhotine, arsenopyrite, chalybite, pyrite, |  | | Journal (article/letter/editorial) | | colour and occurs in an equilibrium assemblage with talc+chlorite+kyanite+dravite+hematite. There is no quartz...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...that the yoderite was formed by reaction between talc, chlorite, kyanite and hematite. Experimental evidence...thick talc+kyanite+quartz ‘whiteschist’ in the Usagaran Complex, exposed in Mautia Hill, Tanzania (McKie...15° 57∞ 42∞ S; Figs 1, 2 & 3) is a coarse-grained talc+kyanite+ chlorite+hematite+dravite+yoderite pod |  | | Journal (article/letter/editorial) | | first was discovered by McKie (1959) at Mautia Hill (Tanzania), while the second was discovered by Johnson...are characterised by the diagnostic assemblage of talc and kyanite, and commonly additionally contain quartz...MASHO system determined that the characteristic talc– kyanite assemblages of whiteschists become stable...°C (Schreyer & Seifert, 1969). At lower pressures talc–kyanite This article is protected by copyright...work by Fockenberg and Schreyer (1994) expanded the talc–kyanite stability field as their study determined |  | | Journal (article/letter/editorial) | | Finding of talc– and kyanite–bearing amphibolite from the Paleoproterozoic Usagaran Belt, Tanzania Keiko MORI*...Salaam, Dar es Salaam, Tanzania ** We report a newly discovered assemblage of talc–kyanite in an amphibolite...of the Paleoproterozoic Usagaran Belt, central Tanzania. The amphibolite is characterized by the mineral...mineral assemblage of clinoamphibole, kyanite, talc with minor rutile, quartz, dolomite, and rare barite...pseudosection modelling predicts that the studied talc– and kyanite–bearing amphibolites formed at high–pressure |  | | Journal (article/letter/editorial) | | yoderite was discoveredin 1959by McKie at Mautia Hill, Tanzania, a locality within the Proterozoic Usagarancomplex...with kyanite, talc, qnartz, and hematite. Basedon the observation that kyanite and talc are separatedfrom...formation of yoderite was given by McKie (1959) as talc + kyanite: yoderite + quartz. Using crystallographicdata...composition of the green yoderite variety of Mautia Hill (McKie and Bradshaw, 1966). If one replacesthe...amount of yoderite of 980/0,the remainder being talc. Becausethe exact oxide ratio of yoderite in the |  | | Journal (article/letter/editorial) | | 324-328. NORTH-HOLLAND PUBLISHING COMPANY KYANITE-TALC SCHIST FROM SAR E SANG, AFGHANISTAN H. KULKE Geologisches...containing talc and kyanite with or without additional gedrite and quartz were discovered. The talc-kyanite...Until very recently the assemblage of kyanite with talc was considered extremely rare: In addition to the...existence in the yoderite-bearing schist of Mautia Hill, Tanzania, had been deduced petrographically [7]....surprizing discovery of extensive occurrences of talc-kyanite schists in Zambia [8] alters this conception |  | | Journal (article/letter/editorial) | | reactions involving the phases chlorite, kyanite, talc, staurolite, pyrope, enstatite, boron-free kornerupine...Importantly, this is also true for the reaction kyanite + talc + hematite+ H2O = yoderite + quartz which is responsible...the only yoderite occurrence in nature at Mautia Hill, Tanzania. Preliminary thermodynamic calculations...environment of this kind, yoderite formation in the Mautia Hill whiteschist may have occurred even at constant...McKie (1959) in a 5 m thick schist band at Mautia Hill (Tanzania). This locality within the Proterozoic Usagaran |  | | Journal (article/letter/editorial) | | be critical. R6sum6 On ddfinit l'assoeiation du talc avee le disthbne comme paragenb~se min6rale caracteristique...rocks one group characterized by the assemblage of talc with kyanite is particularly interesting as it may...Is - - I9. At temperatures below that of I6 the talc-kyanite pair becomes unstable, upon pressure release...interrelated through the simple reaction relationship talc + kyanite--~ chlorite + quartz. (1) At higher temperatures...assemblage talc-kyanite becomes unstable even at the high pressures through the dehydration reaction talc § kyanite--> |  | Grew, Edward S., Pertsev, Nikolai N., Vrána, 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) | | whiteschists and other magnesian rocks: is kornerupine + talc a high-pressure assemblage equivalent to tourmaline...reported with talc in rocks from six localities worldwide, but only at Chilapila Hill in the Lu®lian...relationships imply that kornerupine (Krn) equilibrated with talc (Tlc) during a prograde metamorphic event at T ...assemblage has also been reported from Mautia Hill, Tanzania (P £ 13 kbar). In order to estimate possible...constraints on the stability range for the kornerupine + talc paragenesis in nature, we constructed a P-T diagram |  | Muhongo, S., Kröner, A., Wallbrecher, E., Tuisku, P., Hauzenberger, C., Sommer, H. (2001) Cross-Section Through the Mozambique Belt of East Africa and Implications for Gondwana Assembly. Gondwana Research, 4 (4) 709-710 doi:10.1016/s1342-937x(05)70506-2 | Journal (article/letter/editorial) | | Department of Geology, University of Dar-es-Salaam, Tanzania, E-mail: muhongo@udsm.ac.tz lnstitut fur Geowissenschaften...the best exposures are in East-Central, and NE-Tanzania (Uluguru-, Pare-Usambara mountain ranges); and...granulite-facies rocks of eastern and north eastern Tanzania (Muhongo, et al., 2001). Gneisses (ca. 800°C/10...Ophiolite Complex in the Kenya/ Ethiopia border region. The original gabbro in this complex crystallized...Neoproterozoic high-grade terrains in eastern Tanzania (Maboko, 1995; Muhongo et al., 2001) and central |  | | Journal (article/letter/editorial) | | MAGAZINE, SEPTEMBER I972, VOL. 38, PP. 837--46 Talc-kyanite-quartz schists and other high-pressure assemblages...Survey Department, Lusaka, Zambia S U M M A R Y . Talc-kyanite-quartz schists, Mg-chlorite-kyanite-quartz...assemblage talc-kyanite is at approximately Io kb and is largely independent of temperature. The talc-kyanite...environment. The yoderite-bearing talc-kyanite-quartz schist from Mautia Hill, Tanzania (McKie, i958 ) is, as far...described natural occurrence of this assemblage, z Talc-kyanite-quartz assemblages from the Central Province |  | | Journal (article/letter/editorial) | | found in new analyses of natural yoderite from Tanzania. In some runs yoderite coexisted with kornerupine...unter derjenigen der natiirlichen Yoderite yon Mautia Hill, Tansania, liegt (dort 0.15 Mn 3+ p.F.E.). In...only known from a quartz-kyanite-talc-schist at Mautia Hill, Tanzania, where it forms dark blue porphyroblasts... Indeed a green yoderite variety, also from Mautia Hill, described by McKie and Bradshaw (1966) has Mn-oxides...Abraham (t), Bochum, on a purple yoderite from Mautia Hill, which was dedicated to the second author of |  | | Journal (article/letter/editorial) | | serpentine, orthopyroxene, augite, hornblende, talc, saussurite, 69 Portnoo, Donegal, zincian hercynite...xanthoxenite, jahnsite, 3o9 Austria (Osterreich) Tyrol, talc, IO7 Germany (Deutschland) BADEN Menzenschwand...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 |  | | Report (chapter) | | The present-day Gregory Rift Valley in northern Tanzania is an elongate north–south half graben flanked...and northern ends, respectively. The northern Tanzania volcanic province is younger overall than the...surface interface between the Archaean rocks of the Tanzania Craton and the north –southtrending Mozambique...volcanoes, which overlies cratonic rocks, the Tanzania Geological Survey maps show the volcanic province...Usagara Mountains at the southeastern margin of the Tanzania Craton (Quennell et al. 1956). Such rocks extend |  | | Journal (article/letter/editorial) | | between dolomite marble and yoderitequartz-talc schist on Mautia Hill, Tanganyika. It has refractive indices...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) | | characterized by the mineral assemblage kyanite ? talc (?-quartz or coesite). We demonstrate that whiteschist...feldspar, or omphacite are formed instead of kyanite or talc. Furthermore, the stability field of the whiteschist...the characteristic mineral assemblage kyanite ? talc, which had undergone highpressure metamorphism (i...Petrol protoliths have been suggested for kyanite-talc-bearing rocks, including metapelites, acid volcanics...becomes evident that rocks with the mineral assemblage talc ? kyanite characteristically form at elevated pressures |  | | Journal (article/letter/editorial) | | purple (PY) and green yoderite (GY) from Mautia Hill, Tanzania, show that the bulk of the iron is Fe 3+...McKie (1959) in a quartz-kyanite-talc schist at Mautia Hill, Tanzania. This iron and manganese bearing...variety of yoderite was described, also from Mautia Hill (McKie and Bradshaw, 1966). These are the only...the studied purple and green yoderites from Mautia Hill. For minerals containing more than one transi-...composition of purple and green yoderites from Mautia Hill, Tanzania. Columns 1 and 6 give the original analyses |  | | Journal (article/letter/editorial) | | Namaqualand, South Africa Madras, India Vishakhapatnam District, India 7563 89789 86875 b2I 86878 b2 89790 JAS-I...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...Wilson Lake, Canada Sapphirine (WL 754) and Mautia Hill, Tanzania Sapphirine (JH 2800) Tet'l Oct' 13+ Oct' |  | | Book | | GEMSTONES of East Africa Burundi, Kenya, Rwanda, Tanzania and Uganda Bruce Cairncross Published by Struik...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...countries are among the finest in the world. The region and its gems are particularly dear to my family |  | | Journal (article/letter/editorial) | | rim between kyanite and talc, made his discovery. The chemistry of a kyanite-talc quartz assemblage seemed...minerals from the sole yoderite occurrence at Mautia Hill, on order-disorder in sapphirine, the borosilicates...petrologic study, however, was never completed, Mautia Hill having become a centre for insurgents soon after |  | | Journal (article/letter/editorial) | | microscopy, 453; -and ZUSSMAN (J.), The unit cell of talc, IO7 Alabandine, I.R. spectrum, 277 and MI7 ALABASTER(C... Deweylite, a mixture of hydrous serpentine and talc-like minerals, 75 Bismuthinite, I.R. spectrum, 277...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 |  | | Journal (article/letter/editorial) | | 2001 The Kadunguri Whiteschists are a group of talc- and kyanitebearing lithologies that occur in the...in the extended history of the Zambezi Belt this region was subject to tectonothermal regimes similar to...stable, high-pressure, equilibrium assemblage of talc and kyanite that occurs in the MASH (MgO, Al2O3...METAMORPHISM the high-pressure reaction between talc and kyanite in the M(F)ASH system to form such minerals...understanding the development of this complex tectonic region, as they lie at the triple junction between the |  | | Journal (article/letter/editorial) | | Australia d Geological Survey of Tanzania, P.O Box 903, Dodoma, Tanzania b c a r t i c l e i n f o Article...2012 Keywords: Tanzania Craton Gold endowment Tectonic framework Lake Victoria Region Undiscovered resources...resources Southern East African Orogen Central Tanzania Region a b s t r a c t The lack of new gold discoveries...in recent times has prompted suggestions that Tanzania is mature or approaching maturity, in terms of...the following three regions: 1) the Lake Victoria Region, comprising the gold-endowed East Lake Victoria |
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