 | | 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...spinels from a new deposit at Lang Chap (Tan Huong-Truc Lau), Vietnam A.-K. Malsy, S. Karampelas, D....Abstract: Gem spinels from a new source at Lang Chap, Vietnam, have been investigated for their gemmological...spectroscopic and chemical characteristics. The Lang Chap mining site produces spinels of orangey-red colour |  | 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 |  | 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) | | phlogopite, and forsterite in Tanzanian spinel and magnesite, apatite, baddeleyite, anhydrite, pyroxene, and...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] |  | | 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) | | 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...fluorite crystals is the historic Weardale mining district in County Durham, northern England. Weardale is...from the Diana Maria mine in the Weardale mining district of County Durham, northern England. (a) They are |  | | Journal (issue) | | production. p. 229 228 Purple Gem Spinel from Vietnam and Afghanistan: Comparison of Trace Element Chemistry...spectra of two purple gem spinels from Luc Yen, Vietnam, and Badakhshan, Afghanistan. Their study presents...International Gemmological Conference, Hanoi, Vietnam, pp. 64–66. CIBJO, The World Jewellery Confederation...N., Lawanwong K., Kitdee N., Chodhry D. (2020) Vietnam: Shell nuclei, pearl hatcheries, and pearl farming...PM FEATURE ARTICLES PURPLE GEM SPINEL FROM VIETNAM AND AFGHANISTAN: COMPARISON OF TRACE ELEMENT CHEMISTRY |  | | Conference Proceedings | | (2009), Interlaken, Switzerland (2011); Hanoi, Vietnam, (2013); Vilnius, Lithuania (2015); Windhoek, Namibia...Switzerland, Sweden, Tanzania, Thailand, U.S.A., Vietnam and Zimbabwe. During the 20th IGC, which was held...from a new occurrence from Paramathi in Karur district of Tamil Nadu, India. 12:00 – 12:20 Wilawan...Xianyu: Turquoise from Zhushan county in Hubei province of China Elizabeth Su: The vivid world of jadeite...diamonds. Some call them "mixed-habit growth diamonds" (Lang et al., 2004; Howell et al., 2013); a more commercial |  | | Journal (issue) | | Diamond Mg-ilmenite Fe-Mg-chromite Calcite Magnesite Phlogopite Calcite K-feldspar Phlogopite ...Penglai in Hainan Island and Mingxi in Fujian Province (all along the east coast of China) and described...been reported from the Ailaoshan area in Yunnan Province and the Xinjiang Uyghur Autonomous Region with...worked on a geological survey of Heilongjiang Province, published studies about the geological characteristics...In Brief • The Muling deposit, in Heilongjiang Province of northeastern China, produces fine sapphire |  | | Book | | MALAWI Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...Administered Tribal Areas and North West Frontier Province. Ilmenite crystal clusters to 12 cm across have...of rutile (Weerth, 2004). Tonniq Valley, Skardu district, Gilgit-Baltistan [Northern Areas]. Beginning...hematite. Zagi [Zegi] Mountain, Warsak district, North West Frontier Province. Surface diggings worked by local...to 6 cm (2005: 120). Los Remedios mine, Taxco district, Taxco, Guerrero. Ilvaite occurs in the wallrock |
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