| Elba A Mineralogical Jewel in the Tuscan Archipelago ISBN 0-9715371-7-8 Publisher Lapis International...1.860.267.7225 www.lapisint.com Licensed edition in the English language of extraLapis No. 20: Inset...quartz and a/bite from the Rosina pegmatite in San Piero di Campo Collection Federico Pezzotta Photo by Roberto...Above: Copper 3.5 cm high fi-om the Vallone workings in the Rio Marina mine Collection Walter Giannini Photo...3-921656-57-5 Printed in Germany The Italian Island of ----- A Mineralogical Jewel in the Tuscan Archipelago |
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Nassau, K., Wood, D. L. (1968) An examination of red beryl from Utah. American Mineralogist, 53 (5-6) 801-806 |
Journal (article/letter/editorial) |
| Range, Utah, is due to several absorptions peaking in the 0.48 to 0.55 p region and is probably caused...Range, Utah, a red beryF'2 occurs in gas cavities (lithophysae)in rhyolite (Hillebrand, 1905; Montgomery'...hyalite are late minerals. The occurrenceof beryl in a lava is most unusual and an exeptionally high temperature...with lighter regions adjacent to the basal faces. In thin sections the color resembles that of morganite...specimen was taken with filtered Cr Ka radiation in a 114.6 mm. diameter camera. This showed only lines |
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Wise, M. A., Anderson, A. J. (2006) THE EMERALD- AND SPODUMENE-BEARING QUARTZ VEINS OF THE RIST EMERALD MINE, HIDDENITE, NORTH CAROLINA. The Canadian Mineralogist, 44 (6) 1529-1541 doi:10.2113/gscanmin.44.6.1529 |
Journal (article/letter/editorial) |
| occurrence at the Rist mine, Hiddenite, North Carolina, in order to provide a foundation for fluid-inclusion...within quartz veins and in open cavities that occupy brittle tensional fractures in folded metamorphic rocks...specific group of minerals; characteristic minerals in the four assemblages are calcite, amethystine quartz...of cogenetic high- and low-X(CO2) fluid inclusions in quartz indicates that an aqueous carbonic fluid reached...et al. 1992). Although Be mineralization may occur in a wide range of rock types that includes rhyolite |
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Marshall, D. D., Groat, L. A., Falck, H., Giuliani, G., Neufeld, H. (2004) THE LENED EMERALD PROSPECT, NORTHWEST TERRITORIES, CANADA: INSIGHTS FROM FLUID INCLUSIONS AND STABLE ISOTOPES, WITH IMPLICATONS FOR NORTHERN CORDILLERAN EMERALD. The Canadian Mineralogist, 42 (5) 1523-1539 doi:10.2113/gscanmin.42.5.1523 |
Journal (article/letter/editorial) |
| garnet–diopside skarn. The emerald is generally found in quartz–carbonate veins with mm-scale alteration haloes...less than 320 MPa. The temperatures of formation, in the interval 200–610°C, are constrained by temperatures...those of the Regal Ridge occurrence in the Yukon suggest that emerald in the northern Cordillera is likely...discovery of emerald in the Yukon (Groat et al. 2002) has led to increased interest in the Canadian Cordilleran...green beryl. Emerald was discovered in skarn at the Lened property in 1997. The property is located north |
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Groat, L. A., Marshall, D. D., Giuliani, G., Murphy, D. C., Piercey, S. J., Jambor, J. L., Mortensen, J. K., Ercit, T. S., Gault, R. A., Mattey, D. P., Schwarz, D., Maluski, H., Wise, M. A., Wengzynowski, W., Eaton, D. W. (2002) MINERALOGICAL AND GEOCHEMICAL STUDY OF THE REGAL RIDGE EMERALD SHOWING, SOUTHEASTERN YUKON. The Canadian Mineralogist, 40 (5) 1313-1338 doi:10.2113/gscanmin.40.5.1313 |
Journal (article/letter/editorial) |
| ABSTRACT In September, 1998, one of the authors (WW) discovered a major occurrence of emerald in the Finlayson...The Regal Ridge showing occurs in complexly deformed metavolcanic rocks in the Yukon–Tanana Terrane, near...crystals occur where quartz veins cut mica-rich layers in a shallowly dipping mica schist of the Upper Devonian...beryl crystals up to 4 cm in length occur in tourmaline zones and, rarely, in the quartz veins. Some of...variable (12.3 to 14.8‰), but there is little difference in corresponding ␦D values (–57.3 and –59.8‰, respectively) |
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Scllaller, Waldemar T., Stevens, Rollin E., Jahns,, H, Richard (1962) An unusual beryl from Arizona. American Mineralogist, 47 (5-6) 672-699 |
Journal (article/letter/editorial) |
| pegmatite dike in Mohave County, Arizona, difiers distinctly from other known beryls in physical properties...any beryl, recognizedas such, is 1.602. G:2.921. In composition, this mineral difiers markedly from other...trends determined for beryls by Schaller and Stevens. In general the o index of refraction ranges from 1.570...SioOrs. The high-index beryls can be interpreted in terms of the standard beryl formula combined with...BezAl.AlLi'SioOrs and its cesium-lithium analogue. In various solid solutions of these end-members the |
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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) |
| deposits are relatively rare, they can be formed in several different, but specific geologic settings...result in green and sometimes bluish green or yellowish green crystals. The limiting factor in the formation...emerald is geological conditions resulting in an environment rich in both beryllium and chromium or vanadium...types. The first and most abundant deposit type, in terms of production, is the desilicated pegmatite...and fractures, of upper level crustal brines rich in Be from evaporite interaction with shales and other |
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Groat, L.A., Giuliani, G., Marshall, D.D., Turner, D. (2008) Emerald deposits and occurrences: A review. Ore Geology Reviews, 34 (1) 87-112 doi:10.1016/j.oregeorev.2007.09.003 |
Journal (article/letter/editorial) |
| Article history: Received 29 March 2007 Received in revised form 31 July 2007 Accepted 9 September 2007...However there is speculation that the emerald mines in Colombia are becoming depleted. Brazil currently...emerald production. Emeralds have also been mined in Afghanistan, Australia, Austria, Bulgaria, China...and/or vanadium replacing aluminum at the Y site; in most cases the Cr content is much greater than that...is relatively rare because there is very little Be in the upper continental crust. Unusual geologic and |
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(1983) The Journal of Gemmology Vol. 18 (6) Gem-A |
Journal (issue) |
| Meggen, Lucerne, Switzerland The older generations in the gemstone and jewellery branches of our trade...synthetics from their natural counterparts. Whereas in those days the tendency among manufacturers was to...stones with inclusions as similar as possible to those in the natural mineral. For several years now synthetic...synthetic rubies (and soon sapphires will too) have crept in increasing quantities into the market. Their inclusions...inclusions are bewilderingly similar to those found in natural rubies, and indeed many dealers, jewellers |
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(2022) The Journal of Gemmology Vol. 38 (3) Gem-A |
Journal (issue) |
| cm) was donated to St Peter’s Archabbey in Salzburg, Austria, in 1786. Although oral tradition has assumed...analysis indicate they are from Colombia, as described in the article on pp. 272–283 of this issue. Courtesy...Resembling Fracture Fillings | Cinnabar Inclusions in Ethiopian Opal |
Violet Spinel with Strong Green...Topaz Coloured by Cobalt 272 Origin of Emeralds in a Late-Eighteenth-Century Pectoral Cross and Ring...Interest 300 The Journal is published by Gem-A in collaboration with SSEF and with the support of AGL |
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(2003, Winter) Gems & Gemology Vol. 39 (4) Gemological Institute of America |
Journal (issue) |
| centers • Gem-quality afghanite • Blue beryl discovery in Canada • Gem-quality corundum from Colombia • Emeralds...Index pg. 319 pg. 332 ® EDITORIAL STAFF Editor-_in_-Chief Alice S. Keller akeller@gia.edu Publisher William...Levinson SUBSCRIPTIONS Subscriptions to addresses in the U.S. are priced as follows: 74.95foroneyear...95toaddressesintheU.S.,74.95 for one year...95 to addresses in the U.S., 74.95foroneyear...95toaddressesintheU.S.,75.00 elsewhere; three years: 179.95toaddressesintheU.S.;179.95 to addresses in the U.S.; 179.95toaddressesintheU.S.;210.00...copies of this issue may be purchased for 19.00intheU.S.,19.00 in the U.S., 19.00intheU.S.,22.00 elsewhere. Discounts are given for |
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Clark, A. M. (1993) Hey's Mineral Index - Mineral Species, Varieties and Synonyms (3rd ed.) Natural History Museum, London. |
Book (edition) |
| 1975 © 1993 The Nalural History Museum Printed in Great Britain by SI Edmundsbury Press Lid. Bury St...1ransmi1tcd. in any form or by any means. wi1hou1 1hc prior permission in \\Tiling of 1he publishers. or in the...only in accordance wi1h 1he terms of 1he licences issued by 1he Copyrigh1 Licc.:nsing Agency in lhe UK...UK. or in accordance with 1hc.: terms of licences issued by 1hc appropria1e Reproduction Righ1s Organizarion...regard IO the accuracy of the informalion contained in this book and cannot accept any legal responsibility |
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Embrey, Peter G., Fuller, John P. - Eds. (1980) A Manual of New Mineral Names 1892-1978. British Museum (Natural History), London. |
Book |
| i * [j Digitized by the Internet Archive in 2018 https://archive.org/details/manualofnewminerOOOOunse...brief quotations in a review, this book, or part thereof, must not be reproduced in any form without...without permission in writing from the publisher British Library Cataloguing in Publication Data A manual of...CAPE TOWN Published in the USA by Oxford University Press, New York 2 Filmset in ‘Monophoto’ Times 10...(The Chaucer Press) Ltd, Bungay, Suffolk and printed in Great Britain by Fletcher & Son Ltd, Norwich A |
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Galopim de Carvalho, Rui (2024) Gempedia. AIGS. |
Book |
| publication may be reproduced distributed or transmitted in any form or by any means including photocopying,...permission of the publisher except in !he ase of brief quotations embodied in critical reviews and certain...Cover: Detail of 35.75 et Sri Lankan sapphire set in the Insignia of the Order of the Golden Fleece. ea...paperback printing April 2024 Printed and bonded in Locape - Artes Graficas Lda, Portugal Title no. 24017...Gem-A. The Gemmological Association of Great Britain in collaboration with the AIGS, The Al>ian Institute |
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(2019, Winter) Gems & Gemology Vol. 55 (4) Gemological Institute of America |
Journal (issue) |
| p. 569 512 A Review of Analytical Methods Used in Geographic Origin Determination of Gemstones Lee...Nathan D. Renfro, Ziyin Sun, and Shane F. McClure In some cases, the value of a sapphire depends strongly...and describes its methodology for using the data in geographic origin determination. 580 Geographic...undergone dramatic change in recent years, especially with the development of ruby mining in Mozambique. This...deposits worldwide allows clear origin determination in most cases. This contribution explains the criteria |
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Voudouris, Panagiotis, Karampelas, Stefanos, Melfos, Vasilios, Graham, Ian - Eds. (2020) Mineralogy and Geochemistry of Gems. MDPI. doi:10.3390/books978-3-03928-077-3 |
Book |
| Graham Printed Edition of the Special Issue Published in Minerals www.mdpi.com/journal/minerals Mineralogy...articles from the Special Issue published online in the open access journal Minerals (ISSN 2075-163X)...Gemstones (DANAT). c 2020 by the authors. Articles in this book are Open Access and distributed under the...Tourmaline from LCT Pegmatite in Adamello Massif, Central Southern Alps, Italy: An Investigation of Its Mineralogy...Mazlinfalina Mohd Zin and Stephen J. Harris Diversity in Ruby Geochemistry and Its Inclusions: Intra- and |
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Warner, L.A., Holser, W.T., Wilmarth, V.R., Cameron, E.N. (1959) Occurrence of nonpegmatite beryllium in the United States. Professional Paper 318. US Geological Survey doi:10.3133/pp318 |
Report (issue) |
| Occurrence of Nonpegmatite Beryllium in the United States GEOLOGICAL SURVEY PROFESSIONAL PAPER This...Commission 318 Occurrence of Nonpegmatite Beryllium in the United States By LAWRENCE A. WARNER, WILLIAM...Lawrence Alien, 1914Occurrence of nonpegmatite beryllium in the United States, by Lawrence A. Warner [and others]... Geological Survey. Part of illustrative matter in pocket. "This report concerns work done on behalf...essential constituent in minerals..__ Beryllium as an accessory constituent in minerals. __ Sulfides |
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