 | | Journal (article/letter/editorial) | | 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,...Puyvalador, Qudrigut, Pyrenees: dolomitic marble, tremolite, sepiolite, phlogopite, 412 S p a i n (Espafia) |  | | 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...variable amounts of finely crystalline quartz. (2) Tremolite-phlogopite rocks exhibiting the phyllosilicate...between the light green amphibole prisms. (3) Tremolite rocks with light grey to light olive green interlocking...(calcite and dolomite) containing forsterite, tremolite, and phlogopite and dark gneisses are interfingering |  | | 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) | | (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...(rutile, hematite). Parallel nieols. - - Chilapila Hill, Chongwe river area, Zambia. Specimen courtesy of |  | | 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) | | 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 |  | | 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...138 KentaUen: appinite, actinolite, hornblende, tremolite, 963 Loch Sunart: lamprophyre, biotite, diopside |  | | Journal (article/letter/editorial) | | fibrous talc transforming topotactically from tremolite (locality as above). 3. Massive pale-green talc...(Tyrol, Austria). 5. Massive pale-brown talc (Mautia Hill, Tanganyika). 6. Massive deep-green talc (Reading...the c-axis of the associated tremolite. (The double chains of tremolite produced during the transformation...transformation of talc to tremolite are parallel to the sheet structure of talc (Stemple and Brindley, I96O)...across a stacking fault, as shown in fig. 3- The tremolite from the same mine has been examined and shows |  | | Journal (article/letter/editorial) | | samplesexamined using NMR in this trum from Mautia Hill sapphirine (4.4wto/oFeO; McKie, study include...Val Codera, ltaly (no. 5, loc. cit.); 9 : Mautia Hill, Tanzania (no. 14, loc. cit.); 10 : Finero, ltaly...peak areas for these are added to represent one region of intensity in later discussion. The pressureof...instance becausethe bond angles and dis- 3.1 ppm in tremolite; B. L. Phillips, unpublished data). tances derived...(1987) Peraluminoussapphirinefrom the Aileron district, Arunta block, central Australia. Mineralogical |  | | Book | | 86 87 Brucite Sphene 48 84 85 Rutile 44 Tremolite - Ferroactinolite 6 83 Corundum 42 Pectolite...Hornblende SECOND ORDER Monticellite Yoderite Tremolite-Ferroactinolite Anthophyllite-Gedrite - 0.030...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 |  | | Journal (article/letter/editorial) | | from a number of localities, including Mautia Hill (Tanzania), Sar e Sang (Afghanistan), Serra das Équas...millimeter long, rimmed with, or totally replaced by, tremolite with an outer thin rim of cummingtonite. Talc...kyanite (Ky) and epidote (Ep). Note the retrograde tremolite (Tr) rim around the talc porphyroblast and the...amphibole rimming the talc porphyroblasts is tremolite or magnesiohornblende, according to Leake et al...this stage, tremolite replaced talc, according to the reaction: talc + 2 diopside = tremolite. The calculated |  | | Journal (article/letter/editorial) | | Benson Mine District, Adirondack Mountains, New York and the Manitouwadge Massive Sulfide District, Ontario...infrared analyses on a h6gbomite from Liganga, Tanzania, and found no water. Thus the inconsistency remains:...Ireland McKie (1963) Enstatite-tremolite-chlorite skarns, Mautia Hill Tanzania, Tanganyika Woodford and Wilson...Titanomagnetite ore lenses in anorthosite, Liganga, Tanzania 5H z+ . 43+ 0 8 ,. where SR~+ =0.21q3.39, R2_2xTlxR...Coolen (1981) Calcsilicate granulite, Furua, Tanzania (600-700 ~ C, 5-7 Kb) Granulite-metamorphosed |  | | Journal (article/letter/editorial) | | with veins consisting of chlorite ? actinolite/tremolite assemblages, with accessory phases zircon and...often contain a deformed zone composed of talc-, tremolite- and chloritebearing lithologies (e.g., Escartı́n...evidences for a plagiogranitic precursor of chlorite–tremolite schists in an ultramafic-hosted detachment fault...crystals are deformed with needles of actinolite/tremolite growing in pressure shadows (Fig. 2d). Common...supplementary Table A1). The latter is classified as tremolite or actinolite (XMg = 0.85–0.93) and has markedly |  | | 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 |  | | 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 |  | | Journal (article/letter/editorial) | | et al. ( 1995 ), suggests that the Harts Range region has experienced substantial crustal reworking at...kbar, Scrimgeour and Sandiford, 1993 ), the Broken Hill Inlier (peak conditions of 700-800°C, 5-6 kbar,...the Entia Dome, concentrating on the northeastern region where a supracrustal assemblage contains a wide...approximately 200,000 km 2 in the Alice Springs region (Fig. 1 ). It has been extensively mapped to the...in these rocks involve magnesio-anthophyllite-tremolite(or magnesio-hornblende)-talc--chlorite with minor |  | | Journal (article/letter/editorial) | | Na(Mg3)AlSi3O10(OH)2]. For hornblende, the end-members were tremolite [tr; Ca2Mg5Si8O22(OH)2], cummingtonite [cmt; Mg7Si8O22(OH)2]...evolution of garnet granulites from the Kharta region of S Tibet, E Himalaya. European Journal of Mineralogy...ultra-high pressure rocks in the Western Gneiss Region of Norway. Journal of Metamorphic Geology, 21,...petrology of the Furua granulite complex, southern Tanzania. GUA Papers of Geology, 13, 1–258. Conrad, W.K...amphibolite facies at Vardalsneset, Western Gneiss Region, Norway. Journal of Metamorphic Geology, 18, 241–257 |  | 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) | | clinochlore, titanite and quartz. Finally, up to 10 cm tremolite white crystals were documented in sheared marbles...are very rare on Earth. The Loliondo deposit (Tanzania) is characterized by elevated MnO content up to...analyses) remain far below that of orange kyanite from Tanzania. This is consistent with an orange color less...(Germany, Belgium, Japan, Australia, Brazil and Tanzania) usually provide small or altered crystals [16...significantly lower than that in the Loliondo (Tanzania) deposit, Thassos Island (Rhodope, Greece) can |  | | Journal (article/letter/editorial) | | (andradite–grossular), talc (talc–minnesotaite), amphibole (tremolite–ferroactinolite–pargasite–ferropargasite) and...Simpson, 1986) with needles of actinolite or tremolite (XMg = 0.85–0.93) growing in pressure shadows...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 |  | | Journal (article/letter/editorial) | | a trend between the end members pargasite and tremolite and can be described by a combination of edenite-like...rocks but otherwise only recorded from Mautia Hill, Tanzania (McKie 1963). It is therefore worth envisaging...(as beautifully documented in the Western Gneiss region, Norway: Austrheim 1998; Straume and Austrheim...ultrahigh-pressure metamorphic rocks, northeastern Su-Lu Region, eastern China. J Petrol 41: 563±582 Nasdala L |  | | Journal (article/letter/editorial) | | pressure. Metastability is also a problem in the region of the invariant point on the chlorite reaction...enstatitef spinel---+forsteritefcordierite in the region oI the invariant point a mixture of all four crystalJine...hydrous magnesium iron alumino-siiicate from Mautia Hill, Tanganyika. Minerol. Mag. 32,282-307. Monrv...nv (1960) A structural study of talc and talc-tremolite relations. Jour. Am. Cerom. Soc.43r 3+-42. Tnou |  | | Book (volume) | | fissure m chromite pyroxerute, H irose mine, Tari district, Tottori Prefecture, Japan (Kitabara, 1958). Anal...hyperstbene-diopside-plagioclase bomfels, Aavold Quarry, Oslo district, Norway (Muir and Tilley, 1958). Anal. J. H. Scoon...cordierite-beanng xenolithic rock, Haddo House and Arnage district, Aberdeenshire (Gribble, 1968). Anal. C. D. Gribble...Anal. R. A. Howie. Eulite, granulite, Broken Hill district, New South Wales (Binns, 1962). Anal. R. A....thermaUy metamorphosed iron-rich rock, Yu hsi kou district, Manchuria (Tsuru and Henry, 1937). Anal. N. F |  | | Book (volume) | | 230 Cummingtonite-Grunerite ...... 234 Tremolite-Ferroactinolite ...... 249 Hornblendes ......a diagram from Jap. Journ. Geol. Geogr.; McGraw-Hill Book Company, Inc., New York for a diagram from...the orthopyroxenes of the dacites from the same region. From his investigation of the synthetic MgSi03—CaMgSi206...hypersthene—diopside—plagioclase hornfels, Aavold Quarry, Oslo district, Norway (Muir and Tilley, 1958). Anal. J. H. Scoon...thermally metamorphosed iron-rich rock, Yu hsi kou district, Manchuria (Tsuru and Henry, 1937). Anal. N. F |  | | Book (edition) | | Cand CSPG Pennskiye gubemskiye wdomo.sti (Perm district ga=elle) Pl,ilosopl,ical Maga=ine Periodico de...Mg,(Mg ... Fc2·) = 0.5--0.9. forms a seri with Tremolite and Fcrro-aclinolite. type locality unknown, ...Kara-oba Mo-W deposit), Betpakdala desert. Karaganda region, central Kazakhstan. 56. 635, ZV.\.fO 99(3), 333-339...Akhtenskoe deposit. near Magnitka village. Zlatoust region. south Urals, Rus ia. 75, 93 I. /At,:s, ser. gcol...Aktash mercury deposit, Kurai Range. Kosh-Agach district. Gomiy Altay. Russia. 58. 562. l'MR M" 111-129 |  | | 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 |
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