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Minerals
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Reviews and Recent Advances on Gemology
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Reviews and Recent Advances on Gemology

A special issue of Minerals (ISSN 2075-163X).

Deadline for manuscript submissions: closed (30 April 2014) | Viewed by 12226

Special Issue Editors

Dr. Ian Graham

E-Mail Website
Guest Editor
Earth and Sustainability Sciences Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia
Interests: gem minerals; ore deposits; mineralogy; volcanic systems; gold mineralization; critical element mineralization
Special Issues, Collections and Topics in MDPI journals
Dr. Stefanos Karampelas

E-Mail Website
Guest Editor
Bahrain Institute for Pearls & Gemstones (DANAT), 4th floor, East Tower, Bahrain World Trade Centre, P.O. Box 17236, Manama, Kingdom of Bahrain
Interests: gemology; mineralogy; spectroscopy
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Panagiotis Voudouris

E-Mail Website
Guest Editor
Faculty of Geology and Geoenvironment, National and Kapodistrian University of Athens, University Campus-Zografou, 15784 Athens, Greece
Interests: ore minerals; critical metals; magmatic-hydrothermal ore deposits; mineralogy of hydrothermal alterations in porphyry-epithermal systems; mineralogy and genesis of gemstones
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Vasilios Melfos

E-Mail Website
Guest Editor
Department of Mineralogy, Petrology and Economic Geology, Faculty of Geology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
Interests: ore deposits; porphyry-epithermal mineralization; mineralogy; geochemistry; fluid inclusions
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Gem materials have been appreciated since antiquity. Nowadays, gemology, i.e., the study of gem materials, is one of the most expanding fields in earth science. This is mainly due to new developments towards a more systematic gem mining, the new sophisticated (thus more difficult to detect) gem treatments applied to improve the appearance of gem materials, and the issues involved in identification of some synthetic gem materials. Moreover, recent statistics have shown that every year worldwide more than 10 billion euros are invested in the trade of diamonds and an additional 5 billion euros in the trade of other precious stones and materials. The purpose of this special issue is to publish reviews as well as recent advances on gemology. Articles that cover the spectroscopy, chemistry as well as formation and treatment of gem materials are welcome.

Dr. Ian Graham
Dr. Stefanos Karampelas
Dr. Panagiotis Voudouris
Dr. Vasilios Melfos
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Minerals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.


Keywords

  • gemology
  • mineralogy
  • petrology
  • geochemistry
  • spectroscopy

Published Papers (1 paper)

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Research

1183 KiB  
Article
Advances in Trace Element “Fingerprinting” of Gem Corundum, Ruby and Sapphire, Mogok Area, Myanmar
by F. Lin Sutherland, Khin Zaw, Sebastien Meffre, Tzen-Fui Yui and Kyaw Thu
Minerals 2015, 5(1), 61-79; https://doi.org/10.3390/min5010061 - 30 Dec 2014
Cited by 28 | Viewed by 11472
Abstract
Mogok gem corundum samples from twelve localities were analyzed for trace element signatures (LA-ICP-MS method) and oxygen isotope values (δ18O, by laser fluorination). The study augmented earlier findings on Mogok gem suites that suggested the Mogok tract forms a high [...] Read more.
Mogok gem corundum samples from twelve localities were analyzed for trace element signatures (LA-ICP-MS method) and oxygen isotope values (δ18O, by laser fluorination). The study augmented earlier findings on Mogok gem suites that suggested the Mogok tract forms a high vanadium gem corundum area and also identified rare alluvial ruby and sapphire grains characterised by unusually high silicon, calcium and gallium, presence of noticeable boron, tin and niobium and very low iron, titanium and magnesium contents. Oxygen isotope values (δ18O) for the ruby and high Si-Ca-Ga corundum (20‰–25‰) and for sapphire (10‰–20‰) indicate typical crustal values, with values >20‰ being typical of carbonate genesis. The high Si-Ca-Ga ruby has high chromium (up to 3.2 wt % Cr) and gallium (up to 0. 08 wt % Ga) compared to most Mogok ruby (<2 wt % Cr; <0.02 wt % Ga). In trace element ratio plots the Si-Ca-Ga-rich corundum falls into separate fields from the typical Mogok metamorphic fields. The high Ga/Mg ratios (46–521) lie well within the magmatic range (>6), and with other features suggest a potential skarn-like, carbonate-related genesis with a high degree of magmatic fluid input The overall trace element results widen the range of different signatures identified within Mogok gem corundum suites and indicate complex genesis. The expanded geochemical platform, related to a variety of metamorphic, metasomatic and magmatic sources, now provides a wider base for geographic typing of Mogok gem corundum suites. It allows more detailed comparisons with suites from other deposits and will assist identification of Mogok gem corundum sources used in jewelry. Full article
(This article belongs to the Special Issue Reviews and Recent Advances on Gemology)
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