 | Ngoc Khoi, Nguyen, Hauzenberger, Christoph A., Anh Tuan, Duong, Häger, Tobias, Van Nam, Nguyen, Thuy Duong, Nguyen (2016) Mineralogy and petrology of gneiss hosted corundum deposits from the Day Nui Con Voi metamorphic range, Ailao Shan–Red River shear zone (North Vietnam) Neues Jahrbuch für Mineralogie - Abhandlungen Journal of Mineralogy and Geochemistry, 193 (2) 161-181 doi:10.1127/njma/2016/0300 | Journal (article/letter/editorial) | | range, Ailao Shan–Red River shear zone (North Vietnam) Nguyen Ngoc Khoi, Christoph A. Hauzenberger, Duong...typically associated with marbles in northern Vietnam. Relatively little attention has been paid to corundum...range, Ailao Shan–Red River shear zone, North Vietnam. The partly migmatized gneisses contain gray, grayish...their high gem-quality corundum deposits (Fig. 1). Vietnam geologists found corundum and spinel for the first...first time in the An Phu marble, Luc Yen district, in 1983. At the beginning of 1987, Geological Expedition |  | Garnier, Virginie, Giuliani, Gaston, Maluski, Henri, Ohnenstetter, Daniel, Phan Trong, Trinh, Hoàng Quang, Vinh, Pham Van, Long, Vu Van, Tich, Schwarz, Dietmar (2002) Ar–Ar ages in phlogopites from marble-hosted ruby deposits in northern Vietnam: evidence for Cenozoic ruby formation. Chemical Geology, 188 (1) 33-49 doi:10.1016/s0009-2541(02)00063-3 | Journal (article/letter/editorial) | | phlogopites from marble-hosted ruby deposits in northern Vietnam: evidence for Cenozoic ruby formation Virginie...CNST, Nghia Dô, Câu Giây, Hanoi, Viet nam e Vietnam National Gem and Gold Corporation, 91 Dinh Tien...Street, Hanoi, Viet nam f Laboratory of Geology, Vietnam National University, 90 Nguyen Trai Road, Thanh...Yen and Quy Chau mining districts, in northern Vietnam. The principal results indicate the following....Phlogopite; Shear zone; Yen Bai; Luc Yen; Quy Chau; Vietnam 1. Introduction Ruby is the reddish variety of |  | Tran, Hoa Trong, Polyakov, Gleb V., Tran, Anh Tuan, Borisenko, Alexander S., Izokh, Andrey E., Balykin, Pavel A., Ngo, Phuong Thi, Pham, Dung Thi (2016) Intraplate Magmatism and Metallogeny of North Vietnam - Modern Approaches in Solid Earth Sciences No. 11. Springer International Publishing. doi:10.1007/978-3-319-25235-3 | Book | | Intraplate Magmatism and Metallogeny of North Vietnam Modern Approaches in Solid Earth Sciences Volume...Magmatism and Metallogeny of North Vietnam Trong-Hoa Tran Vietnam Academy of Science and Technology...Institute of Geological Sciences Hanoi, Vietnam Tuan-Anh Tran Vietnam Academy of Science and Technology Institute...Institute of Geological Sciences Hanoi, Vietnam Andrey E. Izokh Russian Academy of Science Institute of...Pham Vietnam Academy of Science and Technology Institute of Geological Sciences Hanoi, Vietnam Thi-Phuong |  | | Journal (issue) | | and Sapphire from the Tan Huong–Truc Lau Area, Yen Bai Province, Northern Vietnam Nguyen Ngoc Khoi, Chakkaphan...Nhung Although not as well known as the Luc Yen district, this area is an important source of ruby and...Afghanistan • Ammonite from Madagascar • Aquamarine from Vietnam • Chalcedony from Peru • Afghan emerald mining...characteristics of r uby and sapphire from Yen Ba i Province, in nor thern V ietnam. There is an ar ticle by...AND SAPPHIRE FROM THE TAN HUONG–TRUC LAU AREA, YEN BAI PROVINCE, NORTHERN VIETNAM Nguyen Ngoc Khoi, Chakkaphan |  | | Journal (issue) | | ISSN: 1355^1565 129 Gem corundum deposits in Vietnam Pham Van Long1, Hoang Quang Vinh2, Virginie Gamier3...Trinh2 1. Vietnam National Gem and Gold Corporation, 91 Dinh Tien Hoang Street, Hanoi, Vietnam 2. Institute...Geological Sciences, CNST, Nghia Dô, Câu Giây, Hanoi, Vietnam 3. CRPG/CNRS, UPR 2300, BP 20, 54501 Vandœuvre...Luc Yen and Quy Chau mining areas in northern Vietnam. Since 1991, 'basaltic'-type blue-green-yellow...('BGY') sapphires have been mined in southern Vietnam. This article briefly reviews the history and geology |  | | Journal (article/letter/editorial) | | Technology] at 07:07 23 August 2013 OF Khai Trung Vietnam FOR TOURMALINE “T his is what I live for!” ...were just below the 22nd parallel in the north of Vietnam and celebrating a photojournalism trip to a new...city of about 4 million people in the north of Vietnam, on an early morning flight from Bangkok on 17...from the Khai Trung tourmaline mine, Luc Yen, Vietnam. Figure 2 (bottom left page). Cornfield next to...most countries from Southwest to Northeast Asia. Vietnam has become one of his favorite destinations during |  | Garnier, Virginie, Giuliani, Gaston, Ohnenstetter, Daniel, Fallick, Anthony E., Dubessy, Jean, Banks, David, Vinh, Hoàng Quang, Lhomme, Thérèse, Maluski, Henri, Pêcher, Arnaud, Bakhsh, Kausar Allah, Long, Pham Van, Trinh, Phan Trong, Schwarz, Dietmar (2008) Marble-hosted ruby deposits from Central and Southeast Asia: Towards a new genetic model. Ore Geology Reviews, 34 (1) 169-191 doi:10.1016/j.oregeorev.2008.03.003 | Journal (article/letter/editorial) | | Geological Sciences, CNST, Nghia Dô, Câu Giây, Hanoi, Vietnam g Laboratoire de Géochronologie, Université de...Pakistan j Vietnam National Gem and Gold Corporation, 91 Dinh Tien Hoang street, Hanoi, Vietnam k Gübelin...tectonics that were active, from Afghanistan to Vietnam, between the Oligocene and the Pliocene. The petrography...for the deposits of Jegdalek, Hunza and northern Vietnam. Whole rock analyses of non-ruby-bearing marbles...Azad-Kashmir, Tajikistan, Nepal, Myanmar, northern Vietnam and southern China (Hughes, 1997; Fig. 1). The |  | | Journal (issue) | | Protected Area of the Lufwanyama district in the Copperbelt Province of Zambia. The Ndola region consists...2002. The Santa Terezinha-Campos Verdes emerald district, central Brazil: structural and Sm-Nd data to...migmatite with intercalated thick and extensive calcite-dolomite, dolomite, and dolomitemagnesite marbles...spinels from a new deposit at Lang Chap (Tan Huong-Truc Lau), Vietnam A.-K. Malsy, S. Karampelas, D. Schwarz...Abstract: Gem spinels from a new source at Lang Chap, Vietnam, have been investigated for their gemmological |  | | Journal (issue) | | with Spinel Corona from the Tan Huong–Truc Lau Area in Northern Vietnam Nguyen Ngoc Khoi, Christoph A...study on corundum with spinel corona from northern Vietnam. The authors explain the genesis of the corona...principality within the Holy Roman Empire and today a province that surrounds Berlin. Frederick III (later Frederick...seized the territory of East Prussia as a Russian province (including Königsberg, renamed Kaliningrad in...spinels from a new deposit at Lang Chap (Tan Huong-Truc Lau), Vietnam. Journal of Gemmology, Vol. 3, No. 1 |  | Giuliani, Gaston, Fallick, Anthony E., Boyce, Adrian J., Pardieu, Vincent, Pham, Van Long (2017) Pink and Red Spinels In Marble: Trace Elements, Oxygen Isotopes, and Sources. The Canadian Mineralogist, 55 (4) 743-761 doi:10.3749/canmin.1700009 | Journal (article/letter/editorial) | | Research and Identification of Vietnam, 91 Dinh Tien Hoang Hanoi, Vietnam ABSTRACT The oxygen isotopic...18.5% for spinels from An Phu and Cong Troi in Vietnam, and Namya from Myanmar; and (3) between 19.0 and...Pamreso in Kenya, Mogok in Myanmar, and An Phu in Vietnam. The variation in the d18O values for most of the...of the spinel mine of Cong Troi, Luc Yen area, Vietnam. (B) Spinel (Sp) associated with clinohumite (Chu)...quarries, Vietnam. (C) Crystals of red spinel around 1 cm across in a marble from Luc Yen, Vietnam. (D) Pale |  | Duong, Van-Hao, Trinh, Phan Trong, Nguyen, Thanh-Duong, Piestrzyski, Adam, Nguyen, Dinh Chau, Pieczonka, Jadwiga, Ngo, Xuan Dac, Tran Van, Phong, Thai Pham, Binh, Nguyen-Van, Huong, Ngo Van, Liem, Tien Bui, Dieu, Vu Khac, Dang, Bui, Chi Tien (2021) Cu-Au mineralization of the Sin Quyen deposit in north Vietnam: A product of Cenozoic left-lateral movement along the Red River shear zone. Ore Geology Reviews, 132. 104065pp. doi:10.1016/j.oregeorev.2021.104065 | Journal (article/letter/editorial) | | mineralization of the Sin Quyen deposit in north Vietnam: A product of Cenozoic left-lateral movement along...Dac Ngo a, Phong Tran Van b, Binh Thai Pham f, Huong Nguyen-Van g, Liem Ngo Van g, Dieu Tien Bui h, Dang...Hanoi, Viet Nam Institute of Geological Sciences, Vietnam Academy of Science and Technology, Hanoi, Viet...Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Viet...100000, Viet Nam g VNU University of Science, Vietnam National University, Hanoi, Viet Nam h GIS Group |  | Giuliani, Gaston, Dubessy, Jean, Banks, David A., Lhomme, Thérèse, Ohnenstetter, Daniel (2015) Fluid inclusions in ruby from Asian marble deposits: genetic implications. European Journal of Mineralogy, 27 (3) 393-404 doi:10.1127/ejm/2015/0027-2442 | Journal (article/letter/editorial) | | both (i) accidentally trapped minerals mainly calcite, dolomite and rutile, and (ii) daughter phases...they may contain rare solids such as plagioclase, calcite, dolomite, rutile and phlogopite (Giuliani et al...Azad-Kashmir, Tajikistan, Nepal, Myanmar, northern Vietnam to southern China (Fig. 1; Giuliani et al., 2014)...Mogok and 8 – Mong Hsu; Vietnam including 9 – Luc Yen, and Yen Bai with the Tan Huong and Truc Lau mines,...solids determined by Raman spectroscopy, such as calcite, dolomite and boehmite, and frequently prismatic |  | Giuliani, Gaston, Dubessy, Jean, Banks, David, Hoàng Quang, Vinh, Lhomme, Thérèse, Pironon, Jacques, Garnier, Virginie, Phan Trong, Trinh, Pham Van, Long, Ohnenstetter, Daniel, Schwarz, Dietmar (2003) CO2–H2S–COS–S8–AlO(OH)-bearing fluid inclusions in ruby from marble-hosted deposits in Luc Yen area, North Vietnam. Chemical Geology, 194 (1) 167-185 doi:10.1016/s0009-2541(02)00276-0 | Journal (article/letter/editorial) | | marble-hosted deposits in Luc Yen area, North Vietnam Gaston Giuliani a,*, Jean Dubessy b,1, David Banks...CRPG/CNRS, UPR 2300, BP 20, 54501 Vandœuvre, France f Vietnam National Gem and Gold Corporation, 91 Dinh Tien...marble-hosted deposits in the Luc Yen mining district, North Vietnam. Raman and Infrared spectroscopy combined...sulphates based on an initial assemblage of anhydrite, calcite and graphite, originating from the metamorphism...COS – S8 – AlO(OH) system; Evaporites; Marble; Vietnam 1. Introduction Marble-hosted deposits are the |  | | Journal (issue) | | Sapphire from Mogok, Myanmar Gemstone Mining in Vietnam Winter 2013 VOLUME 49, No. 4 EDITORIAL 187 ...223 233 Update on Gemstone Mining in Luc Yen, Vietnam Pham Van Long, Vincent Pardieu, and Gaston Giuliani...Myanmar; an update on gemstone mining in Luc Yen, Vietnam; and the characteristics of coated jadeite jade...macrodiamonds in the Wawa belt of the Superior geologic province of Canada (Stachel et al., 2006). In both cases...their carbon is locked up in the carbonate mineral calcite (CaCO3), which simply has too much oxygen to allow |  | | Journal (issue) | | Mahenge, Tanzania In Search of Cobalt Blue Spinel in Vietnam Spinel Inclusions – An Exercise in Aesthetics Spinel...primary deposits are found in Tajikistan, Myanmar, Vietnam and Tanzania (Yavorskyy and Hughes, 2010; Giuliani...Tajikistan with the historical Kuh-i-Lal source; Vietnam with the Luc Yen mining area; and Myanmar with...2B. Red spinel in marble, Luc Yen mining district, Vietnam. (Photo: V. Pardieu) Image 2D. Cut and rough...white sugar-like marble, Luc Yen mining area, Vietnam. (Photo: V. Pardieu) 16 InColor Summer 2019 InColorMagazine |  | | Journal (issue) | | Aquamarine from the Thuong Xuan District, Thanh Hoa Province, Vietnam Le Thi-Thu Huong, Wolfgang Hofmeister, Tobias...quartz • Indian scapolite • Spinel from northern Vietnam • Gem zektzerite • “Coral Sea” agate • Dendritic...(2009b) Les nouveaux grenats démantoïdes d’Ambanja, Province d’Antsiranana, Madagascar. Le Règne Minéral, Vol... Polarization was provided by a Glan-Thompson calcite polarizer. In some cases, spectra were also obtained...alkali basalt at Muling in the northeast Chinese province of Heilongjiang. Rough and cut samples were characterized |  | | Journal (issue) | | Pakistan/Afghanistan • Cobalt blue– colored spinel from Vietnam • Trapiche spinel from Mogok, Myanmar • Non-nacreous...actually dyed hydrophane from Ethiopia’s Wollo Province. The fine untreated Wollo opals on the cover consist...opal with numerous samples from Ethiopia’s Wollo Province strongly suggests that it is actually dyed hydrophane...discovery of play-of-color opal in Ethiopia’s Shewa Province sparked the industry’s attention. Unfortunately...another large Ethiopian deposit was found in the province of Wollo. While similar in appearance to some |  | | Journal (issue) | | Chatoyancy from Vietnam | Faceted Proustite from Chañarcillo, Chile | Blue Spinel Mining in Vietnam Cover photo:...Photo by Jeff Scovil 206 Excursions Luc Yen, Vietnam Gem-A Notices 214 Learning Opportunities 216...Iran Colour-zoned demantoid/andradite from Kerman Province in southern Iran showing green/brown zones was...International: Color-zoned andradite from Iran, with calcite inclusions. Gems & Gemology, 43(1), 65–67. Blue...and a matched pair of bicoloured blue and white/tan rectangular cabochons with a total weight of 35.71 |  | Wu, Jinlin, Sun, Xueying, Ma, Hong, Ning, Peiying, Tang, Na, Ding, Ting, Li, Huihuang, Zhang, Tianyang, Ma, Ying (2023) Purple-Violet Gem Spinel from Tanzania and Myanmar: Inclusion, Spectroscopy, Chemistry, and Color. Minerals, 13 (2) 226 doi:10.3390/min13020226 | Journal (article/letter/editorial) | | Sri Lanka, and Vietnam) [10]. Red spinel from Myanmar and cobalt blue spinel from Vietnam are particularly...purple spinels in Afghanistan and new deposits in Vietnam [17–20], purple spinel was often marginalized commercially...Sri Lanka, and Vietnam) [10]. Red spinel from Myanmar and cobalt blue spinel from Vietnam are particularly...purple spinels in Afghanistan and new deposits in Vietnam Neoproterozoic metamorphic Mozambique Belt [2]...[21]. Spinel is purple-violet associated with calcite, dolomite, apatite, mar (and local gem markets) |  | | Journal (article/letter/editorial) | | rubies, while feldspars and zircons and sometimes calcite are occasionally found in the blue sapphires. Mogok...while feldspars zirconsfrom anddeep sometimes calcite arecrust occasionally found in the sapphires. transported...silk, occasional long, slender rutile silk, and calcite mineral inclusions are common between the two types...stones as in Mong Hsu stones from Myanmar [42,43], Vietnam [43–46], or Tajikistan [43,47,48]. While this blue/red...and Sapphire from the Tan Huong-Truc Lau Area, Yen Bai Province, Northern Vietnam. Gems Gemol. 2011, 47 |  | | Journal (issue) | | ARTICLES 2 Blue Spinel from the Luc Yen District of Vietnam Boris Chauviré, Benjamin Rondeau, Emmanuel...increasingly popular vivid blue spinel from northeast Vietnam. 18 The Chinese Soul in Contemporary Jewelry...gemological characteristics of blue spinel from Luc Yen, Vietnam. The centerpiece of the 18k yellow gold ring from...marble matrix was seen at a mine in the Luc Yen district. Photo by Vincent Pardieu/GIA. Composite image...of the vivid blue spinel from Luc Yen, northern Vietnam, which owes its remarkable color to traces of cobalt |  | | Journal (issue) | | and La Pita mines. This is the largest emerald district in Colombia, and it is the most productive and...Peñas Blancas, located in the famous Muzo mining district. This mine has rarely been mentioned in gemmological...significant impact on the development of the entire Muzo district, and eventually Peñas Blancas may be partially...“including recently discovered deposits in Boyacá Province” (referring to Peñas Blancas). The government...occur in downtown Bogotá in the famous emerald district of Avenida Jiminez and 7th Avenue. Nevertheless |  | | Journal (issue) | | Chinese Synthetic Diamonds Trapiche Rubies from Vietnam Renaissance Recipes for Artificial Pearls Volume...Zimbabwe | Apatite from Durango, Mexico | Cobaltoan Calcite from Switzerland | Pyrite and Chromite Inclusion...Ruby from Khoan Thong, Luc Yen Mining District, Northern Vietnam 726 By Isabella Pignatelli, Gaston...an existing deposit such as those in the Karoi District or the Zambezi Valley (cf. www.mindat.org/ locentries...average hydrostatic SG value for both was 3.21. A calcite dichroscope revealed weak dichroism of light yellow |  | | Journal (issue) | | alluvial sapphires from Russia’s Jewish Autonomous District. 266 A New Deposit of Gem-Quality Grandidierite...253 276 Peridot from the Central Highlands of Vietnam: Properties, Origin, and Formation Nguyen Thi Minh...geochemical characteristics of peridot from Gia Lai Province alongside specimens from other localities to gain...JAPAN CHINA 0 50 km Figure 2. The Sutara mine district is located in the Jewish Autonomous Region (Russian...structures. Secondary minerals of these rocks are calcite, talc, chlorite, and scapolite. Microscopic examina- |  | | Journal (issue) | | (1945) and Rolff (1946) in the Borborema Pegmatitic Province. In 2006, a team led by one of the present authors...Belt in the northern segment of the Borborema Province, northeastern Brazil. The emerald deposit is located...pegmatites comprise the northern part of the Borborema Province, which is known for rareelement mineralization...specific gravity was determined hydrostatically, a calcite dichroscope revealed pleochroic colors, long- and...those encountered in emeralds from the Itabira District of Minas Gerais (compare Hänni et al., 1987; Souza |
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