 | | Journal (article/letter/editorial) |
| i e r. c o m / l o c a t e / o r e g e o r ev Emerald deposits and occurrences: A review L.A. Groat a...Available online 22 April 2008 Keywords: Emerald deposits Emerald occurrences Crystal chemistry Geochemistry...isotopes ClassiïŹcation Exploration A B S T R A C T Emerald, the green gem variety of beryl, is the third most...year) of the world's emeralds. However there is speculation that the emerald mines in Colombia are becoming...accounts for approximately 10% of world emerald production. Emeralds have also been mined in Afghanistan |
 | | Report (issue) |
| our way through the compet itive minefield of emerald science, much of John's contribu tion to this...any other opinion. extraLapis English No. 2: Emerald The Most Valuable Beryl The Most Precious Gemstone...we ⹠pay tribute to John Sinkankas to whom this emerald issue is dedicated. John Sinkankas wrote more...than 15 books including his 1981 definitive work Emerald and Other Beryls. He set standards for authors...and hope that you will see his influence here in Emeralds of the World and in future issues. Gloria & Gunther |
 | | Journal (issue) |
| J. Gemm., 1990,22,3 1990,22, 3 The Brazilian emeralds and their occurrences: Socoto, Socotó, Bahia Dr...of Campo Formoso Carnafba and 40 km NE of the emerald deposit of Carnaiba (Figures 1 and 2). 2). The...BA-9 Salininhas BA-lO BA-10 Socoto Socotö 1. The emerald occurrences in Brazil. Fig. 1. Ceara Cearù CE-ll... 50 50 100 Fig. 2. 2. Bahia state with the emerald occurrences of Socoto Socotö and Carnafba. Carnaiba...searching the waste material for emeralds. year 132 grams of emeralds from 'medium to good' quality had |
 | | Book |
| EMERALD and OTHER BERYLS by JOHN SINKANKAS This is Beryls jewelers, gists, geologists, earth ...sciences, yet eminently facet and widely a Emerald historians, gemological Sinkankas, the permanent...metal beryllium. with Beginning author traces emeraldâfrom its less ite, role of historyâs pendix...Unmatched third is knowledge from author one emerald cutting and of exotic composition, physical...mineralogical once events. languages for beryl emerald logical to and part, Sinkankas explores and |
 | | Journal (article/letter/editorial) |
| Mineralogical and geochemical characteristics of emeralds from the Leydsdorp area, South Africa J.E. Lum...Society of South Africa Abstract The worldâs oldest emerald deposit occurs in the Gravelotte-Leydsdorp area...Limpopo Province of South Africa. Emeralds have been mined from the main emerald working, the Cobra pit, since...since 1927, although emeralds were discovered in the area much earlier. The emerald mineralisation is closely...closely linked with albitite pegmatites, with the emeralds confined almost entirely to metasomatic zones |
 | | Journal (issue) |
| Pisciotta The Wadi Natrun evaporite deposits, Western Desert, Buhayara Governate, Egypt ................Ohio, in the northern Michigan iron and copper mines, at Magnet Cove in Arkansas, and at various other...Kjellman2 Jörgen Langhof 3 The ancient Nordmark mines in the Bergslagen District of south-central Sweden...15 mining fields, each containing several iron mines, have been worked there over the centuries. The...may have been widespread in the various Nordmark mines (Flink, 1885, 1914). 1 The Mineralogical Record |
 | Giuliani, Gaston, Groat, Lee A., Marshall, Dan, Fallick, Anthony E., Branquet, Yannick (2019) Emerald Deposits: A Review and Enhanced Classification. Minerals, 9 (2) 105 doi:10.3390/min9020105 | Journal (article/letter/editorial) |
| minerals Review Emerald Deposits: A Review and Enhanced Classification Gaston Giuliani 1, *, Lee A....February 2019 Abstract: Although emerald deposits are relatively rare, they can be formed...systems and models currently used to describe emerald precipitation and predict its occurrence are too...mode of formation for some emerald deposits. Generally speaking, emerald is beryl with sufficient concentrations...crystals. The limiting factor in the formation of emerald is geological conditions resulting in an environment |
 | | Journal (article/letter/editorial) |
| sent R & M a number of specimens from the copper mines of his town. The specimens are extremely beautiful...When it comes to beautiful minerals, the copper mines of Arizona rank high in the mineral world. ArkansasâAt...make weekend excursions to the Wilmington strip mines where we find 273 the usual fern fossils and some...combustion. Bright red hematite (red ocher) is also found with the sulfur, the red and yellow making a...igneous and metamorphic rocks are striking." The coal mines at Wilmington, Will Co., 111., are famous for their |
 | | Report (issue) |
| Chief Geologist i FRONT COVER PHOTO Twinned emerald crystal from North Carolina, photo from Smithsonian...have made them sound financial investments. The emerald, considered by many to be the most beautiful of...the largest emerald crystal in North America â 1,438 carats. The most expensive cut emerald also comes...North Carolina. This is the 15.14 carat Carolina Emerald owned by Tiffany f, Company of New York and valued...valued at $100,000. First thought to be emerald but later identified as a chromium spodumene, the mineral |
| | Report (issue) |
| AND TORBERNITE THULITE AND PYRITE MONAZITE EMERALD CUPRITE SMOKY QUARTZ ZIRCON TORBERNITE ~/...Allen, Chief Geologist FRONT COVER PHOTO Twinned emerald crystal from North Carolina, photo from Smithsonian...have made them sound financial investments. The emerald, considered by many to be the most beautiful of...the largest emerald crystal in North America -- 1,438 carats. The most expensive cut emerald also comes...North Carolina. This is the 13.14 carat Carolina Emerald owned by Tiffany valued at $100,000. & Company |
 | | Journal (issue) |
| ............................... 338 COLOMBIAN EMERALD SOURCES. By Ro11aid L. I1·es ....................Foster ............ 386 GEOLOGIST SAYS 2 IDLE PENN. MINES MIGHT AGAIN YIELD ORE ...... ...............388...by PETER ZODAC PUBLISHED MONTHLY COLOMB IAN EMERALD SOURCES 1 By RONALD L. IVES Dept. of Geography...large emeralds, most of which were marketed from Spain. These acquired the name "Spanish Emeralds", even...conquistadores. When the Inca empire fell, the mines from which the emeralds were obtained were carefully concealed |
 | | Book |
| for other economic minerals, diamond, sapphire, emerald and quartz wer~ later mined for themselves and...nephrite jade deposits '"'ere formed when ancient sea floor was thrust up into the fold belt in the Late...discovered in alluvials at nearby Cape's Creek, at tin mines near the junction with the Gwydir River. These stones...been substantially resorbed (Figure 8). Different mines produced a different mix of diamond habits, with...than others. George Smith (1926), Inspector of Mines in New South Wales from 1904-1925 and a noted mineral |
 | | Journal (issue) |
| issue 2, 2009 I Vladimir I. Zhemakov URAL EMERALD MINES (Izumrudnye Kopi): Notes on Mineralogy Mineralogical...Geological Society The Mineralogy Museum of Ecole des Mines de Paris, France FAMOUS MINERAL LOCAUTIES SERIES...SERIES Vladimir Ivanovich Zhernakov Ural Emerald Mines: Notes on Mineralogy. Mineralogical Almanac , volume...current issue dwells on Mineralogy of Ural Emerald Mines: a deposit which Russain geologists and mineralogists...belongs to authors, 2009 0 Front Cover Photo Emerald President. 13.6 x 9.0 x 7.7 cm, weight 1172 g. |
 | | Book |
| GRAIL FROM SATANâS CROWN TO THE HOLY GRAIL Emeralds in Myth, Magic, and History Diane Morgan Library... 1947â From Satanâs crown to the holy grail : emeralds in myth, magic, and history / Diane Morgan. p...index. ISBN 978â0â275â99123â4 (alk. paper) 1. EmeraldsâMiscellanea. I. Title. QE394.E5M67 2007 2007000068...Rock 9 3 From Mine to âMineâ: The Emerald Business 21 4 Emeralds in World History 43 5 The Mystique...Origins and the Great Emeralds 75 6 Secrets of the Emerald Trade 141 7 Fake Emeralds and Their Kin: A |
 | | Book |
| Dietrich Klemm Gold and Gold Mining in Ancient Egypt and Nubia Geoarchaeology of the Ancient Gold Mining...a joint project with the University of Assiut, Egypt, our attention was drawn to this aborted program...and ascribing them to the chronologies of Ancient Egypt and Nubia âą Investigating the geology of ore deposits...out to spread far beyond the southern borders of Egypt and well into the Nubian territories of NE Sudan...which gold quartz ores previously collected from wadi sediments had been processed in the same way as |
 | | Journal (issue) |
| of this healed fracture is sealed off by brownish-red iron compounds. Thus they are epigenetic inclusions...scaly aggregates with a colour varying from brownish-red to yellowish and variously mixed (Figure 7). The...exclusive presence of iron in both the yellow and the red scales. Consequently they were ascribed to iron hydroxides...inclusions (Figure 9) and by yellow or brownish-red matter (Figure 10). The electron microprobe analyses...channels and their fillings of yellowish and brownish-red matter can be generally correlated. Furthermore, |
 | | Journal (issue) |
| E. Cloud ......... ... .................. The Emerald, Prince of Adventure. By A . D. Blalock .........entirely free from etching. A few crystals occur red complete enough to show the crystal habit clearly...Map of Mineralized Areas in Topsham, Maine I. Molybdenite occurs at Brunswick in the ledges at the upper...ages of t he past. 132 ROCKS and MINERALS The Emerald, Prince of Adventure By A . D. BLALOCK mnt qnoi...synonymous with ro1nantic n1h·euture than the emerald if we but glant·e through a few pagâą'iof fairly |
 | | Journal (issue) |
| E. Cloud ......... ... .................. The Emerald, Prince of Adventure. By A . D. Blalock .........entirely free from etching. A few crystals occur red complete enough to show the crystal habit clearly...Map of Mineralized Areas in Topsham, Maine I. Molybdenite occurs at Brunswick in the ledges at the upper...ages of t he past. 132 ROCKS and MINERALS The Emerald, Prince of Adventure By A . D. BLALOCK mnt qnoi...synonymous with ro1nantic n1h·euture than the emerald if we but glant·e through a few pagâą'iof fairly |
 | | Journal (issue) |
| | Pyrite and Chromite Inclusion Assemblage in Emerald | Six-Rayed Star Enstatite from Madagascar | Yellowish...Inclusions | Quartz from Chile with Powellite and Molybdenite Inclusions | Quartz from Madagascar with Fuchsite...diamond, jadeite, nephrite, ruby, sapphire, amber, emerald, coral, pearl, chalcedony, opal and more. Some...as a source of various gems, including diamond, emerald, aquamarine, chrysoberyl, alexandrite, iolite,...market considered more exotic than Mexico. The emerald- and cushion-cut stones measured 14.97 Ă 9.47 Ă |
 | | Book |
| undertake the task of abridging my much larger book, Emerald and Other Beryls (Chilton Book Co, 1981) to provide...xiii Chapter 1 Emerald and beryl in antiquity 1 Emerald in ancient Egypt 1 Emerald and beryl in ancient...European emerald objects 13 The Emerald Buddha 14 The Budhaâs tooth emerald 15 Hernando Contez emeralds 15...use of beryls in the Americas 15 Chapter 2 Emerald and beryl in medieval and modern Europe 18 Biblical...lapidaries 19 The Speculum Lapidum 21 New World emeralds 21 Agricolaâs De Natura Fossilium 24 Gesnerâs |
 | | Journal (article/letter/editorial) |
| MINERALIUM DEPOSITA ©Springer-Verlag 1990 Origin of emerald deposits of Brazil G. Giuliani 1. 2 , L. J. H....R.M./SGM, Bahia, Brazil Abstract. Precambrian emerald deposits of Brazil are found in a typical geologic...bodies affected by complex folding and deformation. Emerald mineralization belongs to the classic biotite-schist...pegmatite-free emerald deposits linked to ductile shear zones are also known. Emerald formation is attributed...the important gemstones in terms of weight while emerald is characterized by its high commercial value and |
 | | Journal (issue) |
| 'solid phase' was a blue gem, in the other, a bright red stone. Each stone had its base sealed with what appeared...similar material in which the inclusions were a dark red-brown and which reportedly had been altered by heat...theRed Red Sea, Sea, or orsea-trader's sea-trader'sguide guideto to in the Periplus of the Red Sea and other...object upon earth; it is quite free from flaw and red as fire. Its value is so great that a price for it...could have been a large tourmaline crystal, possibly red in colour and from Burma where in modern times at |
 | | Book |
| undertake the task of abridging my much larger book, Emerald and Other Beryls (Chilton Book Co, 1981) to provide...Chapter 1 Emerald and beryl in antiquity xiii 1 Emerald in ancient Egypt 1 Emerald and beryl in...European emerald objects 13 The Emerald Buddha 14 The Budha's tooth emeraid 15 Hernando Contez emeralds 15...use of beryls in the Americas 15 Chapter 2 Emerald and beryl in medieval and ~odern Europe 18 Biblical...lapidaries 19 The Speculum Lapidum 21 New World emeralds 21 Agricola's De Natura Fossilium 24 Gesner's |
 | | Journal (issue) |
| OCTOBER The 1955 EMERALD by ROBERT WEBSTER, F.G.A. T H E loveliness of the emerald of perfection colour...nuances a n d the rich velvet-green of quality emeralds. It is a stone that was offered in Babylon, the...Dedicated by the ancients to the Goddess Venus, emerald is steeped in superstition a n d lore. Fittingly...the beauty a n d promise of nature in Spring ; emerald has been called the symbol of immortality, the...in adversityâand of kindness a n d of goodness. Emerald by changing its colour has been said to reveal |
 | | Journal (article/letter/editorial) |
| was first discovered and mined at Hid denite. Emeralds have been found in at least three localities;...the present time, the 84 ROCKS AND MINERALS Emerald Valley mine is open to the public for a collecting...are plowed several times a year and may yield emerald, hiddenite, rutile, and quartz crystals. The following...mineral collecting sites in Alexander County: 1) Emerald, rutilated quartz, smoky quartz, and rose quartz...of SR 1492. 2) Emerald, aquamarine beryl, rose quartz, and rutile occur at the Emerald Valley mine, which |
