 | | Journal (article/letter/editorial) | | The Somabula Forest Diamond Field Southern Rhodesia M. C. B The Somabula Forest diamond placers are...workings. The oldest mine of importance in the Somabula area is the Shamrock Gold Mine to the north of...for gold led to the discovery of diamonds on the Somabula Spruit in 1Ć)03 by H. R. Moir and his brother...other minerals associated with the diamonds at Somabula might be expected. PRODUCTION Value Ā£27,843 3...331 2,991 2,230 3,083 1,917 GENERAL GEOLOGY The Somabula Forest and the surrounding country is underlain |  | | Report (issue) | | deposits of rich ā¢d iamantiferous grav.els in th,e district around Akwatia, which is 5 miles S.E. ofĀ· Kade...FotingĀ·aia., 6Ā½ miles N.N.W. of Jajma in the Kono district, a11d there was a find near Kennema in 1931. The...the Kambui hills nea.r Kennema and Lago, Kennema district. Small fragĀ·ments of ruby and sma,11 zircon crystals...quantities. Alluvia.I diamond was discovered in the Somabula fore.st west of Gwelo in 1903. The stones occur...S. Rhodesia for the year 1915 (1916), pp. 2-5. Somabula diamond fields of Rhodesia, by F. P. Mennell; |  | | Book (edition) | | Ceylon. Rhodesia, and S.W. Africa: Sri Lanka, Zimbabwe, and Namibia, respectively. However, although...2 USSR USSR 51 -38.8 Asbestos, 44 14.4 Zimbabwe Colombia Illinois 3.3 -20.2 14.8 7 3 18.4...mineralogist, of Paris, specimens for study. AMBER ADULARIA See: Feldspar. AGALMATOLITE See: Pyrophyllite... Michigan. Domeykite Superior is from the district, Mohawk Mine, Michigan; Lake Ontario, Canada;...Tintic, Utah; Arizona; New Mexico; Coeur d'Alene district, Idaho. Hill, = 1 Anglesite gems are colorless |  | | Book (edition) | | typical French family pere, mere, et in the Jura district, all busily engaged; on fils ā the table will...diamonds were bought and sold. The diamond-bearing district actually spread over a wide area on the eastern...km.) from Rio de Janeiro, in the Serro do Frio district of the State of Minas Geraes. The discovery naturally...and the continuous development of the diamond district in Brazil rendered it impossible to hoodwink the...doubt as to the advisibility of prospecting the district settled was by the discovery of the superb diamond |  | | Book | | Russia (Ural mountains), Zambia (Kafubu) and Zimbabwe (Sandawana)). Their study demonstrates how these...(sulfides of Ag, Pb, Cu, and Zn) in the Charcas mining district, San Luis Potosi. The area is characterized by...photographs: (a) Emerald crystals on quartz and adularia, Panjshir Valley, Afghanistan, 6.6 Ć 4.4 cm. Specimen:...(Figure 2). Colombia, Brazil, Zambia, Russia, Zimbabwe, Madagascar, Pakistan, and Afghanistan (Figure...17. Tsa da Gliza. South Africa: 18. Gravelotte. Zimbabwe: 19. Sandawana, Masvingo, Filibusi. Mozambique: |  | | Book (edition) | | extensive fields in the prophetically named Kimberley district of Western Australia promise to be of world importance...have been cut as gems are those from Sandawana in Zimbabwe, where the pegmatite veins containing the emeralds...Figure 1.26 Emerald in pegmatite from Sandawana, Zimbabwe 30 The Ages of Gems About 2565 million years...Colombia and the Archaean (2600 Ma) deposits in Zimbabwe, emeralds have formed at many different times...rewarded this kind of investment in both Sandawana (Zimbabwe) and Itabira (Brazil). The mining of emerald focuses |  | | Journal (article/letter/editorial) | | Chromium deposits of this type in South Africa and Zimbabwe contribute to more than 90% to the world supply...subtypes (Bushveld, South Africa, Great Dyke, Zimbabwe, Muskox, Canada, Dore Lake, Australia, Campo Formoso...South Africa (Fe, Cr, and PGE) and the Great Dyke, Zimbabwe (Cr, PGE/PGM) in idealized cross sections and...chalcedony whose color comes from chromium is found in Zimbabwe and known as mtorodite or mtorolite (McLean, 1967;...placer deposits (Hokkaido, Japan, Great Dyke, Zimbabwe, Ural Mountains, Russia). 3.4. Metamorphic chromium | | | Journal (article/letter/editorial) | | Chromium deposits of this type in South Africa and Zimbabwe contribute to more than 90% to the world supply...subtypes (Bushveld, South Africa, Great Dyke, Zimbabwe, Muskox, Canada, Dore Lake, Australia, Campo Formoso...South Africa (Fe, Cr, and PGE) and the Great Dyke, Zimbabwe (Cr, PGE/PGM) in idealized cross sections and...chalcedony whose color comes from chromium is found in Zimbabwe and known as mtorodite or mtorolite (McLean, 1967;...placer deposits (Hokkaido, Japan, Great Dyke, Zimbabwe, Ural Mountains, Russia). 3.4. Metamorphic chromium | | | Book (edition) | | typical French family pere, mere, et in the Jura district, all busily engaged on the table will be noticed...diamonds were bought and sold. The diamond-bearing district actually spread over a wide area on the eastern...km.) from Rio de Janeiro, in the Serro do Frio district of in stones were The discovery naturally caused...and the continuous development of the diamond district in Brazil rendered it impossible to hoodwink the...doubt as to the advisibility of prospecting the district was by the discovery of the superb diamond, settled |  | | Book (edition) | | et a more at a ā , fils ā in the Jura district, the table will be kind noticed described above...actually spread side Pinner in the bought were district eastern the known from Golconda India. ...was gold (129 km.) development of the diamond district Brazil rendered it Brazil, Small the discovery...something 1727 their to it Serro do Frio district of the excitement. great size the in stone...only the the not, the a few of any doubt district superb are Orange the existence all at tales |  | | Book (edition) | | typical French family pere> mere, et in the Jura district, all busily engaged on fils the table will be...diamonds were bought and sold. The diamond-bearing district actually spread over a wide area on the eastern...km.) from Rio de Janeiro, in the Serro do Frio district of The discovery naturally caused great excitement... Europe continuous development of the diamond district in Brazil rendered it impossible to hoodwink the...small to the advisibility of prospecting the district was by the discovery of the superb diamond, settled |  | | Book | | mica and chlorapatite. The Sandawana emeralds of Zimbabwe show tremolite crystals which are more hair-like...irrespective of origin. The Sandawana emeralds from Zimbabwe are also a superb bright green, keeping their...Nerchinsk area of Transbaikalia, USSR, and in Zimbabwe. ANGLESITE PbS04. Orthorhombic, crystals tabular...734 or Pakistan: Mingora Zambia: Miku Kafubu Zimbabwe: Mayfield Sandawana Tanzania: Lake Manyara South...found in mica schists (as in deposition in Egypt, Zimbabwe and the Urals) contain mineral inclusions that | | | Book | | mica and chlorapatite. The Sandawana emeralds of Zimbabwe show tremolite crystals which are more hair-like...irrespective of origin. The Sandawana emeralds from Zimbabwe are also a superb bright green, keeping their...Nerchinsk area of Transbaikalia, USSR, and in Zimbabwe. ANGLE SITE PbS0 4 ā¢ Orthorhombic, crystals tabular...734 or Pakistan: Mingora Zambia: Miku Kafubu Zimbabwe: Mayfield Sandawana Tanzania: Lake Manyara South...found in mica schists (as in deposition in Egypt, Zimbabwe and the Urals) contain mineral inclusions that |  | | Book (edition) | | French family--pere, mere, et .fi/s-in the Jura district, all busily engaged; on the table will be noticed...diamonds were bought and sold. The diamond-bearing district actually spread over a wide area on the eastern...km.) from Rio de Janeiro, in the Serro do Frio district of the State of Minas Geraes. The discovery naturally...and the continuous development of the diamond district in Brazil rendered it impossible to hoodwink the...doubt as to the advisibility of prospecting the district was settled by the discovery of the superb diamond |  | | Book (volume) | | gem and lithiumbearing pegmatites of the Pala district of San Diego County, California, from which much...the most important being those of the southern district. Although so important in the past they are now...(By courtesy of Sothebys) In the Bundelkhand district of Central Provinces, between the rivers Ken and...Central Provinces and in the neighbouring Sambalpur district of Orissa. These mines have, in general, been...Sanggau on the Kapuas river. Another diamondiferous district lies in the south-east of the island in the area |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | Co., Bonanza mine, Trinity Co., Michigan Bluff district, Placer Co., in AK, placers at Fairbanks, Iditarod...and quartz veins at Juneau. In Canada, Noranda district, PQ; Porcupine, Kirkland Lake, and Larder Lake...deposits, ON; Atlin and Caribou, BC; and Klondike district, YT. In Mexico, Altar and Magdalena, SON; Parral...Ghana; Kilo and Moto, Zaire; Bulawayo and Hartley, Zimbabwe; Witwatersrand, South Africa, a belt of fossil...localities, AZ; Calico district, San Bernadino Co., Cerro Gordo(*), Inyo Co., Bodie district, Mono Co., and other |  | | Book (edition) | | found it in the native metal that occurred in his district. In parts of the world where gold was found in...diamonds were bought and sold. The diamond-bearing district actually spread over a wide area on āthe eastern...still persists is principally in the Bundelkhand district of the Central Provinces. The famous stones mined...of Bahia, especially in the Chapada Diamatina district in the southern part of the State. It is here...discovered at Lencoes, in the Chapada Diamatina district of the State of Bahia ; it is reputed to have |  | | Book (edition) | | specimens for study. AMAZONITE See: Feldspar. ADULARIA AMBER Also: Succinite. Formula: Approximately...from the Mohawk Mine, Michigan; Lake Superior district, Ontaria, Canda; Guererro, Mexico; also from...Tintic, Utah; Arizona; New Mexico; Coeur dāAlene district, Idaho. Chihuahua, U.S.S.R.; Comments: Andalusite...Occurrence: In massive Ni sulfide orebodies. Cobalt district, Ontario, Canada; Sarrabus, Sardinia; Adreasburg...noted in New South Wales, especially the Invernell district. Victoria is a location for green sapphire. Montana: |  | | Book | | Australia at Kalgoorlie; in the Cripple Creek district, Teller Co., Colorado and in Calaveras Co., California...in Norway and with pyrrhotine in the SudĀ¬ bury district of Ontario; San Diego Co., California. Treatment...quartz veins. Localities. Poorman mine. Silver City district, Owyhee County, Idaho. Freieslebenite Ag5Pb3Sb5S12...alexandrite); Malagasy RepubĀ¬ lic (yellow-green); Somabula Forest, Rhodesia (alexandrite); Mogok, Burma (colourless... Germany; Altar, SonĀ¬ ora, Mexico; the Empire district, Nevada; Australia. Treatment. Avoid acids; clean |  | | Book (edition) | | recently they have been found in gravels in the Somabula Forest, Rhodesia and at Liideritzbucht, German...largest part of the world's supply comes; Passau district in Bavaria; southern Bohemia; Korea; Madagascar;...at Monroe, Conn.; Brewer's mine, Chesterfield district, S. C.; near Cummins Abundant with silver ores...mountains, eastern Hungary and a less important Alpine district reaching from Carinthia through the Austrian Tyrol^and...Galician frontier. The third district, which is the most important district in Europe, is in Transylvania |  | | Book (edition) | | is now done on carborundum wheels. In the Idar district in Germany agate and other quartz varieties are...ground, which extends to an bedded rocks of the district. in the upper part of the pipes, it In the early...being a rock of a special type and peculiar to the district after which it takes its name. It is described...the latter kind are not known to outcrop in the district and they must have been brought up from great...the rich alluvial deposits in the Lichtenburg district in the Transvaal. Kimberley mines Many 128 | | | Book (edition) | | specimens for study . AMAZONITE See: Feldspar. ADULARIA AMBER See: Feldspar. AGALMATOLITE AGATE ALBITE...from the Mohawk Mine, Michigan; Lake Superior district, Ontaria, Canda; Guererro, Mexico; also from Chile...Tintic, Ucah; Arizona; NeĀ¼' Mexico; Coeur d'Alene district, Idaho. Chihuahua, Mexico; England; Scotland;...Occurrence: In massive Ni sulfide orebodies. Cobalt district, Ontario, Canada; Sarrabus, Sardinia; Adreasburg...noted in New South Wales, especially the lnvernell district. Victoria is a location for green sapphire. Montana: |  | | Book (edition) | | dept. (departement), dept. (departamento), dist. (district). Less common terms are not abbreviated, e.g....Noua, Banat, Romania. Also abundant at Bikita, Zimbabwe, where allophane and bikitaite are late hydrothermal...and at Sakangyi, Katha dist., Myanmar. At Mtoko, Zimbabwe, at Muiane, Alto Ligonha dist., Mozambique, and...both Gwanda Zimbabwe. AM 37, 462-469, 1952. NJbMM, 537, 1990. Austinite...Alpine fissures, e.g. in crystals to 1 cm with adularia at Rauris, Salzburg, and at Rieckentorf, near |  | | Book | | in the form of chalcedony and opal, fluorite, adularia and baryte. of minerals, little or no contain...carefully with the help of a geological guide to the district and a mineralogical text book in order to identify...Co., California. Treatment. and Creek in district, Calaveras Clean with water. Krennerite AuTe...chalcopyrite in Norway and with pyrrhotine in the Sudbury district of Ontario; San Diego Co., California. Treatment...quartz veins. Localities. Poorman mine, Silver district, Owyhee County, Idaho City Freieslebenite Ag | | | Book | | in the form of chalcedony and opal, fluorite, adularia and baryte. These lists are by no means comprehensive...carefully with the help of a geological guide to the district and a mineralogical text book in order to identify...Australia at Kalgoorlie; in the Cripple Creek district, Teller Co., Colorado and in Calaveras Co., California...in Norway and with pyrrhotine in the SudĀ¬ bury district of Ontario; San Diego Co., California. Treatment...quartz veins. Localities. Poorman mine, Silver City district, Owyhee County, Idaho. Freieslebenite Ag5Pb3Sb5S12 |
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