 | 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,∗ , 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 |  | | Book | | GEMSTONES of East Africa Burundi, Kenya, Rwanda, Tanzania and Uganda Bruce Cairncross Published by Struik...Cairncross photo; (bottom) Gem-quality green chromian diopside crystals on large, well-formed grey graphite crystals...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) | | Based on theoretical calculations of the EXAFS region, Fe(III) appears to be located in the 5-coordinated...werdingite, quartz, corundum, hercynite, augitic diopside, and biotite. A piece of the original sample Rhodesia...hercynite, quartz, corundum, dumortierite, and augitic diopside) was carried out under a binocular, after chemical... a yoderite [>99% [5]Fe(III); from Mautia Hill, Kongwa, Tanzania], an acmite (>99% [6]Fe(III); from Mont...Sample contaminated by inclusions of werdingite, Fe-diopside, hercynite, and ilmenite. (microscopic observations |  | | Journal (article/letter/editorial) | | garnet, axinite, epidote, apatite, hornblende, diopside, 427 South Terras mine, St. Stephen-in-Brannell...tholeiite, I Rhum, peridotite, allivalite, chromite, diopside, olivine, plagioclase, 347 57o TOPOGRAPHICAL...meta-dolerite, augite, omphacite, 435 Mutki, ophiolite, diopside, augite, 5I I and M42 Saudi Arabia Wadi Qatan...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 |  | | Journal (article/letter/editorial) | | coll. 78123) (Harker coll. 78125) 14. Mautia Hill, Tanzania (McKie 1963) 15. Labwor Hills, Uganda (coll...only; 5 (Val Codera) 2 M and 1Tc peaks; 14 (Mautia Hill) - lTc peaks only; 23 (Mt. Riiser-Larsen) - Diffuse...jadeite (Na), periclase (Mg), c o r u n d u m (A1), diopside (Ca and Si), schreibersite (P), and metals for"...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 |  | | 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...Abbreviations used: cc = calcite; cor = corundum; cpx = Al-diopside; crd = cordierite; dol = dolomite; gt = garnet; |  | Wilke, Max, Farges, François, Petit, Pierre-Emmanuel, Brown, Gordon E., Martin, François (2001) Oxidation state and coordination of Fe in minerals: An FeK-XANES spectroscopic study. American Mineralogist, 86 (5) 714-730 doi:10.2138/am-2001-5-612 | Journal (article/letter/editorial) | | Fe)7Si8O22(OH)2 FeO Fe0.1Mg0.9O Mg1.7Fe0.3Si2O6 9.6 diopside CaMg0.9Fe0.1Si2O6 3.6 siderite Fe(II)-sulfate...Alm49Pyr39Spe1Gro11. References Pabst 1959 Alexander 1989‡ Hill 1984 Harrison et al. 1998 Stephenson and Moore 1969...yoderite (Mg,Al,Fe)8Si4(O,OH)20 6.1 5 C3v Mautia Hill, Kongwa, Tanzania Fleet et al. 1962 Higgins et al. 1982...(7050–7300 eV), with 0.1 eV steps for the pre-edge region (7108–7116 eV). Some spectra presented here (as...absorbance by fitting the spectral region from 7050 to 7090 eV (the region before the pre-edge) using a Victoreen |  | | 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...Clinopyroxene, New Zealand, anal., M [ 3; and see Augite, Diopside Coast Range, California, stilpnomelane, 36I and...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 |  | | Journal (article/letter/editorial) | | of Newlands: pyromorphite, 722 Derbyshire Calton Hill: olivine, ortho- and clinopyroxene, spinel, 483...auricha]cite, 441 Harp Edge: aurichalcite, 441 Masson Hill, Matlock: cinnabar, xc Nestus mine, Matlock Bath:...Wood: coffini~e, uraninite, xe Staffordshire Ecton Hill, Wetton: aurichaleite, celesfine, hydrozincite,...Good Hope mines, Ecton Hill, Wetton: aurichalcite, 441 Waterbank mine, Ecton Hill, Wettou: aurichalcite...tremolite, 963 Loch Sunart: lamprophyre, biotite, diopside, hornblende, titanaugite, 415 Mull: larnite, melilite |  | TENCZER, V., HAUZENBERGER, C. A., FRITZ, H., HOINKES, G., MUHONGO, S., KLÖTZLI, 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)...Granulites; Mozambique Belt; P–T–X evolution; Tanzania. INTRODUCTION Although anorthosites are unique... 1993). In the Neoproterozoic mobile belts of Tanzania, metaanorthositic bodies are commonly found as |  | | Journal (article/letter/editorial) | | Moore & Bennett (1968) on a crystal from Mautia Hill, Tanzania. Further refinements were presented by...Ontario, Grew 1996), Moore et al. (1989; Mautia Hill, Tanzania), and Klaska & Grew (1991; crystal from...crystals were used for Ka spectral lines: Si, diopside, PET; Al, kyanite, TAP; Mg, forsterite, TAP; Fe...spessartine, LiF; V, VP2O7, LiF; Ti, titanite, LiF; Ca, diopside, PET; K, orthoclase, PET (not detected); Cr, chromite |  | Tarantola, , Voudouris, , Eglinger, , Scheffer, , Trebus, , Bitte, , Rondeau, , Mavrogonatos, , Graham, , Etienne, , Peiffert, (2019) Metamorphic and Metasomatic Kyanite-Bearing Mineral Assemblages of Thassos Island (Rhodope, Greece) Minerals, 9 (4) 252 doi:10.3390/min9040252 | Journal (article/letter/editorial) | | green-red horizons with a mineralogical zonation from diopside, hornblende, epidote and grossular, (ii) mica...a mineral zonation with tremolitic hornblende, diopside, quartz, anorthite/bytownite, epidote, grossular...(sample KT02). (d) Mineralogical zonation with diopside, hornblende, epidote (green), grossular and clinozoisite...mineralogical zonation showing tremolitic hornblende, diopside, quartz, anorthite/bytownite, clinozoisite/epidote...calc-silicate is dominated by Mn-bearing varieties of diopside (up to 1.44 wt. % MnO) and hornblende (up to 2 |  | | Journal (article/letter/editorial) | | from a number of localities, including Mautia Hill (Tanzania), Sar e Sang (Afghanistan), Serra das Équas...reaction: talc + 2 diopside = tremolite. The calculated reaction curve for pure diopside is about 0.1 GPa...ultrahigh-pressure rocks from the southern Sulu region, eastern China. J. metamorphic Geol., 13, 659-675 |  | | Journal (article/letter/editorial) | | separated from each other by a 30- to 60-km-wide region, consisting of metasedimentary rocks with enclosed...correlated with the Seychelles and the Rajasthan region of India (Tucker et al., 1999a; Torsvik et al....three distinct regions (Fig. 2b). The southern region is 50–150 km wide, extends from the area around...is bordered to the north by a 50- to 80-km-broad region, dominated by metagranitoids and granites. The...textures (Fig. 3b), occur in the Andapa-Sambava region of the southern Bemarivo Belt (Fig. 2c) and near |  | | Book | | chiastolite slate. magnification x 44. Lake District, England; Andalusite Andalusite ALSiO, tm...from piemontite quart: rock, Tanzania, magnification x 42. 24 Mautia Hill. Allanite (Orthite) Allanite...white area is almost entirely sanidine but the dark region to the top left of the photograph is part of a...nepheline—wollastonite rock, Oldoinyo Lengai, Tanzania; magnification x 12. 41 Pectolite Pectolite...fine-grained Specimen from trachyte, Lacqueille, Mt. Dore region, France; magnification x 32. 47 Kaersutite |  | | Journal (article/letter/editorial) | | OF DAR ES SALAAM, PO BOX 35052, DAR ES SALAAM, TANZANIA RECEIVED AUGUST 12, 2013; ACCEPTED APRIL 11,...entrained within Quaternary rift basalts in northern Tanzania document the composition, equilibration conditions...Menzies et al., 1993; Griffin et al., 1998). In Tanzania, Quaternary basalts are a consequence of active...volcanoes erupted through the crust of northern Tanzania (Jones et al., 1983a; Cohen et al., 1984; Lee...African Rift is having on the deep crust in this region. Accordingly, we have undertaken a comprehensive |  | | Journal (article/letter/editorial) | | 3. The formation of supergene galena at Broken Hill, Northern Rhodesia: by Prof. J. H. Taylor (vol.... M. Nakahira (vol. 31, p. 781). 2. The system diopside-anorthite-s by Dr. E. Christiaan de Wys and Dr...Kennedy (vol. 31, p. 846). 4. Minium from Broken Hill, New South Wales: by Dr. Brian J. Skinner and Miss...are closely similar to those described from Scawt Hill, but at one point on the excavated conduit wall...barium-strontium pyrochlore in a biotite rock from Panda Hill, Tanganyika : b y Dr. E. J~ger, Prof. E. l~iggli |  | | Journal (article/letter/editorial) | | 7 indices e x t r a p o l a t e d f r o m t h e region 0.2 to 0"9 F e cross n e a r 0.18 Fe, a c c o u...withamite: anal. Dr. B. W. Evans. 3. Piemontite, Mautia Hill, Tanganyika: presented by Dr. D. McKie, anal...strong absorption peaks in and near the visible region may give rise to some anomalous dispersion. Variation...values for higher temperatures by analogy with diopside and hornblende: 100 0.16 0.22 200 0'42 0.53 ...kb is estimated as 1.1 • 10 ~ by analogy with diopside (1.07), augite (1.02), and aetinolite (1.30), |  | | Book (volume) | | Orthopyroxenes Pigeonite 162 Calcium Pyroxenes Diopside-Hedenbergite Augite Fassaite J ohannsenite 198...by sodium ions and the Ml positions by Al, r diopside salite ferrosalite ferroaugite augite subcalcic...Ca-Tschermak's molecule (CaAJ 2SiO6 ) augite diopside + bedenbergite Ca(Mg,Fe 2+) Si2O 6 Fig. 2. Nomenclature...0adeite)-NaFe 3 +Si 2 O 6 (aegirioe)CaMgSi2O6 (diopside)-CaFeSi 2 O 6 (hedenbergite)-CtAl 2 SiO6 (Tschermak's...O 6 (Mg,Fe2 +) 2 Si 2 O 6 Calcium Pyroxenes Diopside-Hedenbergite Ca(Mg,Fe 2 +)Si 2 O 6 Augite (Ca |  | | Journal (article/letter/editorial) | | metamorphism in the Mozambique belt of east-central Tanzania: A petrological, geochemical and geochronological...metamorphism in the Mozambique belt of east-central Tanzania: A petrological, geochemical and geochronological...metamorphism in the Mozambique belt of east-central Tanzania: A petrological, geochemical and PT geochronological...CE PT ED Running title: HT/HP granulites of Tanzania 1 ACCEPTED MANUSCRIPT ABSTRACT This study investigated...rocks from the Mozambique belt of east-central Tanzania, collected close to the town of Ifakara and the |  | | Journal (issue) | | Nanocut Plasma-Etched Diamonds Chrysoprase from Tanzania Demantoid from Italy THE QUARTERLY JOURNAL OF...Chrysoprase and Prase Opal from Haneti, Central Tanzania James E. Shigley, Brendan M. Laurs, and Nathan...the Kagem mine, Zambia • Yellow grossular from Tanzania • An unusual blister pearl • Myanmar report •...Kashmir (in what is now the Indian part of the region) in 1881 after a landslide revealed the blue gems...(Atkinson and Kothavala, 1983). Although the Kashmir district has been at the center of a hostile border dispute |  | | Journal (article/letter/editorial) | | olivine (forsterite–fayalite), clinopyroxene (diopside– hedenbergite), chlorite (clinochlore–daphnite)...of whiteschists and associated rocks at Mautia Hill (Tanzania): fluid infiltration during highgrade metamorphism |  | | Journal (issue) | | colour and sometimes fractured. In the North-Western region, corundum is Introduction found in Tertiary volcanic...area in the NorthKenya and Tanzania, in addition to the many western region of Kenya. This is in the Turkana...unusual gemstones, have been known to produce district of the Northern Rift Valley Province, and corundum...sources ever supplied rough which can produce This region is part of the Mozambique orogenic star stones...North-western region of Kenya. The mining area, dashed area in the map, is located in the Turkana district of the |  | | Book (volume) | | cm1 is called the fingerprint region. Usually IR spectrum in this region contains very complicated series...overlapping bands. The importance of the fingerprint region is that each mineral species produces a different...500 to 800 cm1 can be considered as “fingerprint region” sensitive to the composition and the topological...see Fig. 1.9), but generally IR spectrum in this region is characteristic of all these minerals. In IR...vibrations of a large number of atoms within the region of coherent vibrations. However, in real periodic |  | | Journal (article/letter/editorial) | | orthopyroxene (enstatite–ferrosilite), clinopyroxene (diopside–hedenbergite), chlorite (clinochlore–daphnite)...intergranular fluid shows a shift of the low pH region towards higher temperatures (Fig. 6b) with increasing...they are more pronounced in the low-temperature region of the reaction path. Assuming that melt-bearing...of whiteschists and associated rocks at Mautia Hill (Tanzania): fluid infiltration during high-grade metamorphism |
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