 | | Journal (issue) | | staffing arrangements 125 THE CHIVOR EMERALD By PAUL W. C MINE JOHNSON O L O M B I A has five... There are two principal emerald districts in Colombia, M u z o and Ghivor. T h e M u z o district is...new mine has been discovered near Muzo. T h e Ghivor Mine, previously known as the Somondoco Mine, as...nearest town, is the only operating emerald mine in Colombia not controlled by the Colombian Government...situated in the township of Almeida, Department of Boyacâ, Republic of Colombia, South America. Located at approximately |  | | Report (issue) | | emerald crystals from La Pita at Maripi, BoyacColombia valued at up to 1,000.00 US dollars per carat;...emerald specimen with calcite from Coscuez, Boyaca, Colombia. Bill Larson collection; Jeff Scovil photo Bottom:...Wilson Whether from ancient India, Greece, Rome or Colombia, emeralds have always been a highly prized gemstone...CRPGICNRS in Vandoeuvre, France Colombia: Gonzalo Jara of Bogota, Colombia Africa: Federico Pezzotta from...Treatments: Ron Ringsrud of Saratoga, California 2 Colombia: The World's Top Producer .....36 Eastern Cordillera |  | | Book | | CHEMICAL AND PHYSICAL PROPERTIES 90 Emerald Lore in Colombia and Peru, 5. 93 Crystal Structure Chemical...Proportions, Chile, 407 335 Polishing 359 361 Colombia, Laps and Agents, 336 407 Czechoslovakia, 13...by the noted were emerald made from green Department of Antiquities more extremely certain that... worked to were satisfy a the gems from Colombia only known source gained of emeralds. vigorous...north of Thebes. No emeralds exist the emerald mine through stones. Qift as as other mineral, |  | | Journal (issue) | | Kazakhstan • New emerald find from the Chivor region, Colombia • New jadeite from Guatemala • Milarite...single copies or back issues to the Subscriptions Department (see above), or visit www.gia.edu/gandg. To obtain...tourmaline for a short period in 1978, until the mine was abandoned due to flooding. During recent field...pegmatites, referred to as the Antsongombato Gem mine, was quickly organized by the Malagasy company “Pyramide”...including the one containing the Antsongombato Gem mine. Under this ownership arrangement, several local |  | | Journal (issue) | | the U.S.A. 05 0 74470 02033 2 UNM’s HARDING MINE Exploring Plentiful Pegmatite 2 ROCKNGEM.COM ...With WorldWide Popularity 20 NEW MEXICO’S HARDING MINE The Must-See Pegmatite of the West Steve Voynick...2020 TOURMALINE with ALBITE and QUARTZ Himalaya Mine, San Diego County, CA Watercolor by Frederick C...2020 7 Covington Has Moved! ROYAL PEACOCK OPAL MINE Dig your own Virgin Valley Fire Opals ALL YOU FIND...diameter by 10” long pieces. I purchased mine at a major department store, but most craft stores should carry |  | | Book | | Panagiotis Voudouris is Professor of Mineralogy at the Department of Geology and Geoenvironment, National and Kapodistrian...Professor in Economic Geology-Geochemistry, at the Department of Mineralogy, Petrology, Economic Geology, School...Afghanistan (Panjsher Valley), Brazil (Itabira), Colombia (Coscuez), Ethiopia (Shakisso), Madagascar (Mananjary)...Šoštarić 5 and Vladimir Bermanec 2 1 2 3 4 5 * Department of Geosciences, Faculty of Sciences and Technology...University of Norway in Tromsø, N-9037 Tromsø, Norway Department of Geology, Faculty of Science, University of |  | | Journal (issue) | | 11.2 cm, from the La Marina mine, Muzo District, Boyaca Department, Colombia. See the article on the Colombian...Fort Victor ia, SonthArn Rhorl,,st'l. Bogota, Colombia. LAWRENCE H. CONKLIN 2 WEST 46th STREET , NEW...DENVER MART EXPO HALL ROOMJ53 BARITE 20.3 CM XIEFANG MINE , GANZHOU PREFECTURE , JIANGXI PROVINCE , CHINA...Comenius University, Faculty of Natural Sciences Department of Mineralogy and Petrology Ilkovifova 6, 842...1751 was funded mainly by donations from wealthy mine owners and from simple mining families. Modem times |  | | Book | | through the Canada Book Fund as administered by the Department of Canadian Heritage. Note: For illustrative...mineral pigments. LEFT: Malachite, Bwana M’Kubwa Mine, Ndola, Copperbelt, Zambia * 22 x 26 x 16 cm 22...Namibia * 20 x 18 x 14 cm Bladed stibnite, Ichinokawa Mine, Saijo, Shikoku, Japan * 10 x 1 x 1 om Acicular...Brazil * 5 x 3 x 0.6 cm Platy muscovite, José Pinto Mine, Jaguaracu, Minas Gerais, Brazil * 12 x 19 x 6 cm...Malawi * 10 x 10 x 7 cm Calcite, San Sebastian Mine, Charcas, San Luis Potosi, Mexico * 10 x 8 x 6.5 |  | | Book | | the field, the home laboratory, and the operating mine or mill. Ultraviolet light, in the hands of geologists...of Mines. Arthur L. Flagg of the Arizona State Department of Mineral Resources offered the fruits of long...halos, 148 Chapter IX. ULTRAVIOLET LABORATORY IN MINE, MILL; AND Night mining in the open pit ... the...open-pit operation. Thus the famous Yellow Pine Mine operated night and day throughout World War II,...It could not be contaminated by uranium dust in mine workings nor damaged by seeping radon gas. It guided | | | Book | | ultraviolet’s many uses in the laboratory, and the operating mine or mill. field, the home Ultraviolet light, in...Arizona State fornia State Division of Mines. Department of Mineral Resources offered the fruits of long...rocks” locate orebody ULTRAVIOLET LABORATORY IN MINE, MILL, AND Night below mining in the open pit...open-pit operation. Thus Pine Yellow the famous Mine operated night and day throughout World War II,...It could not be contaminated by uranium dust in mine workings nor damaged by seeping radon gas. It guided |  | | Book | | Crystals up to 140mm (5'A in) long occurred in the Ray mine and in Bisbce, Arizona, USA. Very fine spincl-law...100 mm (4 in) long, come also from the San Gcnaro Mine in Huancavclica and Uchucchaqua, Peru. New finds...many localities in California, USA (Colorado Quartz mine. Nigger Hill and others). Fine leaf gold comes from...110 mm (47.6 in) long were very rare in Ground Hog mine, Gilman, Colorado, USA. The largest known sheets...of crystallized gold occurred in the Jamestow n mine. California, USA, where a cavity, which yielded |  | | Book | | Crystals up to 140mm (5½ in) long occurred in the Ray mine and in Bisbee, Arizona, USA. Very fine spinel-law...100 mm (4 in) long, come also from the San Genaro Mine in Huancavelica and Uchucchaqua, Peru. New finds...Dorado, California, US.A. Gold, 68 mm, Eagle's Nest Mine, California, US.A. Gold gold on it. Typical aggregates...many localities in California, USA (Colorado Quartz mine, Nigger Hill and others). Fine leaf gold comes from...mm (4 5/i6 in) long were very rare in Ground Hog mine, Gilman, Colorado, USA. The largest known sheets |  | | Book | | Caucasus - crystals up to 1.5 cm (USSR), Getchell Mine - Nevada (USA) •Application: ore (extraction of...- aggregation of crysta ls from pil e of a coal mine; Kladn o (Czechoslovakia - width of field 15 mm)...found in the Mansfeld slates in Zwickau (GDR), Wolf Mine (near Herdorf, Reichenbach, FRG), Bisbee, Georgetown...California, Alaska (USA), (Mexico), (Canada), (Colombia). Gold deposits are also found in (Ghana), (Egypt)...(Mexico), Saia Sprie (Romania), (USA), (USSR), (Colombia). Sulphide CuAgS Stromeyerite 62 Named after | | | Book | | illustrated Encyclopedi of the World’s Rocks and Mine re L A R E N MI OF THE WORLD Rudolf Duda and...0620 01371 12 16 3 SCIENCE AND TECHNOLOGY DEPARTMENT Digitized by the Internet Archive in 2022 with...Caucasus — crystals up to 1.5 cm (USSR), Getchell Mine — Nevada (USA) e Application: ore (extraction of...Sal-ammoniac — aggregation of crystals from pile of a coal mine; Kladno (Czechoslovakia — width of field 15 mm)...found in the Mansfeld slates in Zwickau (GDR), Wolf Mine (near Herdorf, Reichenbach, FRG), Bisbee, Georgetown |  | | Journal (issue) | | the “famous locality” series: the Home Sweet Home mine and Mount Antero. A fine mineralogical study of...“Missing and presumed lost” by the wellknown lost-mine author Kearney Egerton; “El Dorado’s children” by...continued to be added to our line-up in the Book Department, and many of them are difficult to obtain elsewhere...us instead. Why? Because profits from the Book Department go directly to the Mineralogical Record magazine...on lodes in California Gulch, and the Homestake mine (near Tennessee Pass) was reported to be shipping |  | | Book | | Keweenaw area of north Michigan; at the Copper Queen mine, Bisbee, Arizona and at Georgetown, New Mexico....areas including Kimberley, Pretoria (the Premier mine is in this area), and Jagersfontein in the Orange...Localities. Lead is found in Sweden at the Harstig mine, Pajsberg; from the gold placers of the Ural Mountains...several localities in Chile, and from the Mohawk mine, Keweenaw County, Michigan; also from Lake Superior...rhodium and ruthenium. Localities. Choco area of Colombia and in the Ural mountains, USSR; in Aus¬ tralia |  | | Journal (volume) | | Mexico. Eight-sided crystals from the Traversella mine, Piedmont, Italy. .&. crystals. It can also be...available. The main source was once the Kongsberg Mine in Norway, but this closed in 1956. Man has, however...Clear crystals of anglesite on galena found in a mine near Cagliari, Sardinia. ► Anglesite crystals on...finest autunite crystals come from the Daybreak Mine, near Spokane in Washington State. In addition,...permission, and appropriate safety gear, to an abandoned mine tip - you may find interesting specimens that you |  | | Book (edition) | | Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed by Grdllit.u.o. Stefanikova43...Rice, Dolores co., both Colorado, at the Questa mine, Taos co., New 1994. Abernathyite K2[(UOJ 2l(AsO_J2]•6HzO...Harding Co .. South Dakota. and at the Fuemrole No2 mine, Emery co .. Utah. Also at Menzenschwand Scbwarzwald...mainly in crystals to 5 cm at the Himmelsftirst mine, Freiberg, both Saxony, Germany. In the subtropical...rocks and chromite deposits, e.g. at the Soridag mine, Guleman dist., Elazig vilayet, Turkey. In dark |  | 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) | | information should be addressed to the Permissions Department, John Wiley & Sons, Inc., 605 Third Avenue, New...the late Horace Winchell of Yale University, Department of Geology and Geophysics, and Brian J. Skinner...Spotsylvania Co., and Partridge mine, Orange Co., VA, and at Dahlonega, GA; Homestake mine, Lawrence Co., SD; Silver...Lake Co., Breckenridge(*), Summit Co., Ground Hog mine(*), Gilman Co., Silverton and Telluride, San Juan...Ledge mine, Nevada Co., Jamestown, Tuolumne Co., Colorado quartz mine, Mariposa Co., Bonanza mine, Trinity |  | | Book | | SMITHSONIAN CURATOR Dr. Jeffrey E. Post, Chairman, Department of Mineral Sciences and Curator, National Gem...The highest volume of fine emeralds comes from Colombia, while Madagascar is richest in sapphires. Diamond...65 percent of the world’s diamond supply Colombia Colombia produces around 70 percent of the world’s...the Superpit is Australia’s largest open pit gold mine and is one of the largest open pit mines in the...Green Dresden Green | Probably from the Kollur Mine in India, this 41-carat natural green diamond is |  | | Book | | In the shafts and tunnels of a sixteenth-century mine INTRODUCTION arabic^groffcvinditaris.f} norrafludd9...want to check this, you will have to visit a salt mine; halides are dissolved by groundwater if they are...walking and for work in such places as quarries and mine dumps. The second requirement is for old, expendable...Collectors working on the spoil tip of a mine. Quarries and mine workings remain a fruitful source for the...metal or commodity markets, so it may be economic to mine a deposit one year but not the next. Abundance and | | | Book | | want to check this, you will have to visit a salt mine; halides are dissolved by groundwater if they are...walking and for work in such places as quarries and mine dumps. The second requirement is for old, expendable...Collectors working on the spoil tip ofa mine. Quarries and mine workings remain a fruitful source for...metal or commodity markets, so it may be economic to mine a deposit one year but not the next. Abundance and...may now be of sufficient economic value for old mine waste tips to be reworked for, it. A good example |  | | Book (edition) | | maintain ore reserves, and in the proper location of mine workings to avoid caving ground. In the future he...descriptions. He also tells us that Hannibal had a silver mine, named the Baebulo, in southern Spain, in a mountain...amount of gold. For example, the Alaska Juneau gold mine mined with profit ores that contained only 0.00016...product. Consequently, the properties that deter¬ mine the commercial use of nonmetallic products are multitudinous...chemical analyses are sometimes made in order to deter¬ mine the quantities of other ingredients, particularly |  | | Book | | are not likely to underestimate the role of the mine and of the miner in the modern industrial world...Mining and Metallurgical Engineers, Canadian Department of Mines to further PREFACE vii (Mines...brought to mind by reference to a coal mine or a copper mine is that of a vast labyrinth of underground...is — : INTRODUCTION 3 Yet today the term "mine" may be applied with equal justice to the great...producing oil or gas well can be referred to as a mine in the strict usage of that term, yet each carries |  | | Book | | Springfield show ( 1995: 582). Madawaska [Faraday] mine near Bow Lake, Hastings County. Some of the world's...property of, the old Madawaska uranium mine (called the Faraday mine before 1964). The mineral assemblage...Cowgill, 1977). LATINAMERICA BRAZIL Jacupiranga mine, Sao Paulo. Among the crystallized minerals in the...Oblast. Alpine-type clefts in the famous Dodo quartz mine commonly contain ilmenite, occurring as lustrous...ilmenite crystals as described here for the Dodo mine. In general, ilmenite crystals from the Subpolar |
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