 | | 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 |  | | Book | | gemological wealth of East Africa. This unique region encompasses ·what may be the world's richest gem...gemologist and geologist, Dr. Peter Keller. Kenya and Tanzania are revealed in their full mineralogical splendor...200 known here-holds the productive Mwadui diamond mine, known for Yeryfine, rare, pink diamonds. Emerald...chrome tourmaline are widely identified with the region. ( continuedon backflap) ♦ ♦ ♦ ♦ ♦ ~...~OSCIENCE 'l'RESS, INC. TbPattiFor sunrises over Lake Turkana, champagne in the Serengeti, and Norfolk |  | | Journal (article/letter/editorial) | | It occurred in both the Morefield and Rutherford mine pegmatites, of the Amelia district, Amelia County...Virginia. Well-formed crystals from the Morefield mine reportedly reached 5 cm in length although the Amelia...and topaz (Pough 1936; Switzer 1939). Attempts to mine and/or collect this difficult location are almost...340 ROCKS & MINERALS Badger Flats and the Boomer mine, have produced small phenakite crystals. Elsewhere...carbonates in a replacement deposit at the Wheeler Peak mine in the Lincoln district, White Pine County, Nevada |  | | Catalog/List | | it collected when the Tsumeb Mine (as well as other mines of the region) were still in production in...engineering work took him to the Tsumeb Mine in Namibia. This mine is renowned for producing what are arguably...MINERALS 57001 Azurite Level 8, Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia If the attachment point on...Spitzkopje, Spitzkopje Area, Karibib District, Erongo Region, Namibia Klein Spitzkopje in Afrikaans means: the...Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia Some of the best things to come from the Tsumeb Mine were |  | | Report (issue) | | ..................................... Mayflower mine.............................................. Virginia...may be other, undiscovered gold deposits in this region, either lode deposits, or fine-grained gold disseminated...the Archean crystalline basement rocks of this region. Geologic mapping in the western Tobacco Root Mountains...only one of many Middle Cambrian islands, in a region of orthogonal, faultcontrolled block uplifts and...the mines and mineral deposits of the surrounding region. Tansley, Schafer, and Hart (1933) described the |  | | Report (issue) | | sediment compaction (for example, Hedberg, 1936; Magara, 1980), porositydepth trends in well data can be...shale-compaction trends for estimating erosion (for example, Magara, 1976; Issler, 1992; Nelson and Bird, 2005). Numerous...Kugrua 1 Kuparuk Uplands (Ekvik) Kuukpik 3 Kuyanak 1 Lake 79 Federal 1 Little Twist Long Island 1 Lupine Unit...Thomson Unit 2 Point Thomson Unit 3 Prudhoe Bay St 1 Ruby State 1 Sag River St 1 71.170229 70.455468 70.004858...Alaska: Basin Research, v. 11, no. 3, p. 191–204. Magara, K., 1976, Thickness of removed sedimentary rocks |  | | Journal (issue) | | necklaces (Figure 1). The beads are treated with a ruby-red stain, which may be seen on fractures and twin...The material makes a very convincing imitation of ruby (Schmetzer et al., 1992). How treatments are performed...1992, 23, 4 Fractures stained red do not make a ruby! this picture shows part of one button shaped bead...refractive indices are in the range 1.5 to 1.6. Fig. 4. Ruby with a fracture, probably treated with wax or paraffin...probably wax or paraffin) the majority of fractures in ruby and sapphire are treated with a boro-silicate melt |  | | Report (issue) | | been found in The four most promising aroas and Mine Fork of Jacks Creok, 1918, its mining possibi...since 1887 in at Tho Ltirgost shipments (Ross Mine) amount to about 130 tons from of concentrate... of Aluminum is Aluminums whoa in pure and ruby, in the which grades cal high 93 per cent of...York; The other plants arc located at Alcoa, and Magara Falls, Asbestos: Tcnnosseo; ivlassona, Now ...tho World War there was marked activity in the region, with 30 plants in operation during 1918 and 10 |  | | Journal (article/letter/editorial) | | H. N., Research Dept., The Carborundum Company, Magara Falls, New York. Bexrnn, E. F., Calle Viamonte...Viamonte 470, Cordoba, Argentina. Bner., f. A., Ruby Star Route, Box 38, Tucson, Arizona. Bnaro, E. H., The Imperial...Brr-r-, GonooN L., 1520 Kensington Avenue, Salt Lake City 5, Utah. xBnrr,, Jeuns FoRBEs, 1510 Public...Cnawlono, Anrnun L., 1067East Fifth Street,S., Salt Lake City, Utah. Cnorrz, Er,r,rs8., Drawer L, University...Francisco,California. Cruun, Ronnnr M., Box 88, Star Lake, New York. CnuNorlt, A. 8., 30 Porter Place,Montclair |  | | Report (issue) | | Hydrologic analysis of two headwater lake basins of differing lake pH in the west-central Adirondack Mountains...photogrammetry in slope stability investigations at Goonyella Mine. Mt. Waverley, Victoria, Australia : CSIRO, Division...Calif. : ALABAMA GEOLOGY APPALACHIAN MOUNTAIN REGION. Benson, D, Joe. Depositional history of the Middle...] : USGS, [1981] qPAM ALBERTA--GEOLOGY--LAKE ATHABASCA REGION. Wilson, J. A. Geology of the basement...Aires : La ARIZONA--GEOLOGY--BIG HORN MOUNTAINS REGION MAPS. Preliminary geologic maps of the eastern |  | | Report (volume) | | biological and physical sciences of the Pacific region. University of Hawaii Press. Honolulu, Hawaii....Division of Water Rights Technical Publication. Salt Lake City, Utah. Utah Div. Water Resources Coop. lnv...Resources Cooperative Investigations Report. Salt Lake City, Utah. Utah Geol. and Mineralog. Survey Bull...Utah, College of Mines and Mineral Industries. Salt Lake City, Utah. Utah Geol. and Mineralog. Survey Circ...Utah, College of Mines and Mineral Industries. Salt Lake City, Utah. Utah Geol. and Mineralog. Survey Quart |  | | Report (issue) | | wall cylinder; radius of stressaltered fracture region, as shown in fig. 6 Constant; maximum fracture...denudation rate Diameter of a tested sample; edge region of a fracture, as shown in fig. 6 Young's modulus...Fracture surface (Inner region) Ideal tensile strength Fracture surface (Inner region) A INTERMOLECULAR DISTANCE...fracture area into two regions (fig. 6). In the inner region the opposite fracture walls are relatively far...elasticity is fully adequate to describe this region. In the edge region, the opposite fracture walls are sufficiently |  | | Report (issue) | | must know not only in which direction a particular mine opening should be extended to continue in an ore...utilization of the manganese deposits in the Nikopol region, U.S.S.R., described in the chapter on "Manganese...changing as the advance of technology permits us to mine or process minerals that were once too low in grade...technologic advances will make it profitable to mine resources that would be much too costly to produce...are at least a few prematurely deserted mills and mine installations built on the expectation of finding |  | | Report (issue) | | highest-lying diamond pipe. Commissioning Letseng mine at 10 500 feet during the last two years has called...Whatever you're mining, wherever you're mining, mine it on Bridgestones Bridgestones — for all the variables...Operating conditions differ enormously from mine to mine. Not only are there variations in the kind of...Whatever you’re mining, wherever you’re mining, mine it on Bridgestones. iaaseinn Money — BRIDGE STONE...Sweden 531 511 408 484 359 444 493 461 409 476 Tanzania Thailand Togo New Zealand Trinidad and Nicaragua |  | | Book (edition) | | NORTH AMERICAN REGION 15 EURASIAN REGION 109 NEOTROPICAL REGION 215 AFRICAN REGION 578 SOUTHEAST...SOUTHEAST ASIAN REGION 887 AUSTRALASIAN REGION 983 Index 1089 PREFACE TO THE SIXTH EDITION Previous editions...ishik.igoi) Ziehm Ruda Zukal. North American Region ,, -- ' 15 • 1 2 • lchthyomyzon bdellium...baeri, Sandpaper Sturgeon, 110 Acipenser Julvescens, Lake Sturgeon, 33 Acipenser gueldestaedti, Plated Sturgeon...Norman's Lampeye, 688 Aplocheilichthys pumilus, Lake Lampeye, 688 Aplocheilichthys rancureli, Filamentous |  | | Report (volume) | | strata have suffered little change, and it is this region which has furnished nearly all the material, from...anterior extremity of the visceral area. Anterior region. That portion of the shell in front of the transverse...mantle and originating in the posterior medial region. They usually have numerous secondary branches...ventral valve. Platform. See Spondylium. Posterior region. That portion of the shell back of the transverse...muscle. A single muscle situated in the umbonal region of most Atremata. By its contraction the valves |  | | Book | | weathering. Sedimentary deposits are enerated on sea, lake, river and marsh bottoms with formation of stratified...sediments of seas and oceans as well as in river or lake sediments and on valley slopes. U, Cu, native sulfur...and geological structure are isolated in the ore region territory. Ore fields consist of ore deposits enclosing...are called native, while ores produced from river, lake, sea and ocean sands are called placer. Ore structure...end of the 19th century the most of the runÂof mine copper ore contained 5Â8 % of copper, but this figure |  | | Journal (volume) | | IOWA 3 1858 045 060 781 | TE THE SALT LAKE G N I MIN REVIEW . ESTABLISHED APRIL11099 , ...March 30, 1915 The Salt Lake Mining Review 1601 Walker Bank Building SALT LAKE CITY , UTAH 2 620.05...Superior to Expand By Letson Safety and Economy in Mine Ventilation . The Prosperting Spirit . Editorial...Low Eagle & Blue Effects U. S Coal Company's Mine near Kemmerer, Wyoming. Votes of Chloridizing...Goodspring Notes Northwestern Notes A Rich Mining Region R. Development at Tonopah By C. 17 20 21 22 |  | | Book | | sabkhas.181 Contents Alluvial fan-ephemeral saline lake.] 81 Sabkha Yotvata, Israel.181 Basin and Range...field-ephemeral saline lake.201 Lake Eyre, Australia.202 Lake Frome, Australia.208 Lake Callabonna, Australia...210 Perennial stream floodplain-perennial saline lake.210 Eolian sabkhas. 211 Sea-margins with elongate...230 Coastal salinas of the Middle East.231 Solar Lake. Gulf of Elat.231 Ras Muhammad Pool, Southern Sinai...saline lakes.238 Great Salt Lake, Utah.239 Mono Lake, California.243 Lake levels and conditions.244 Tufa |  | | Book | | prospect for mineral deposits. In places, ancient mine workings have survived to our time (Fig. 1). Of...Petersburg for further study. In 1763 he appealed to the mine owners asking them “ to supply specimens of various...Observing daily the behaviour of ores in mine workings, the mine geologist grasps better than anybody else...exception to this are those deeper parts pene trated by mine openings and oil wells. At the Witwatersrand gold... when freshly extracted from deep horizons of a mine, is perfectly colourless, transparent, and has a |  | | Book | | disseminating the information, the mine geologists and mine managers who have made the mine visits a rewarding experience...concentration required to achieve the break-even point for a mine in terms of revenue and costs. Any detailed exploration...province may be defined as a mineralized area or region containing mineral deposits of a specific type...constituents in a fluid medium from the source region to the site of deposition; and (c) localization...(Thompson) Eastern Goldfields, Western Australia Dore Lake Complex, Canada Ni-sulfide (Carr Boyd) 1 . Intrusions |  | | Report (volume) | | 13-15, 2005 prior to the fall GSA meeting in Salt Lake City, Utah. The editors, Peter Reiners (Yale University)...ancient sediments.246 Estimating the timing of source region exhumation.246 Constraining the erosion-transport...they were recording the thermal history of the region, and published papers in support of this conclusion...40Ar/39Ar age spectra and the thermal history of the region. Earth Planet Sci Lett 55: 123-149 Harrison TM...interstitials and vacancies; and (3) the stressed region relaxes elastically, straining the surrounding |  | | Report (issue) | | INDIANS. A(;:UERDO DE CARTAGENA COUNTRIES. See ANDES REGION. Acuna, Rene. [Bocabulario de mayathan.) Boeabulario...AEGEAN POTTERY. See POTTERY, AEGEAN. AEGEAN SEA REGION · ANTIQUITIES . CONGRESSES. Wace and Blegen (1989:...The Fulani matrix of beauty and an in the Djolof Region of Senegal. Lewiston, N.Y .: Edwin Mellen Press...C 697 p] AFRO-AME RICANS· MISSISSIPPI· DELTA (REGION) • MUSIC. Black delta religion videorecording....cl 995. AFRO-AMERICANS· MISSl SSIPPI • DELTA (REGION)· RELIGION. Black delta religion videorecording |  | | Book | | Whitie is a longtime fixture of New England and Lake Superior geology, but we will not deal here with...these two sources of energy is continuous in the region of steep thermal and chemical gradients near the...Wftwatersrand, and widespread chemical sedimentation of Lake Superior-type banded iron-formations, which reached...relatively short time span, but viewed as a whole [region] the metalli¬ zation was of long duration’ (p....base of the Complex (Vermaak, 1976). At the Atok mine, platinoid minerals tend to occur at the boundaries |  | | Book (edition) | | exposed in the Canadian Shield formed when the region underwent stretching over a billion years ago;...pressure in this magma chamber becomes great enough, magara is forced upward throngh a chimney, or Crack, to...lavapools ina Caldera formation (for example, Crater Lake, Oregon) subsurface, lens-shaped mass, called a...The uplift may also be Gue to the heating of the region when slabs of the underlying Hthospherk mune drop...2 THE NATURE OF GEOLOGY 3 ¢ Do you live in a region threatened by landslides, volcanoes, earthquakes |
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