 | | Journal (article/letter/editorial) | | minerals (antigorite), spinel-group minerals (hercynite, magnetite, and spinel), stibnite, talc, true...megacrysts in alkali basalts of the Ratanakiri Volcanic Province, Cambodia. P. C. Piilonen, G. Poirier, and...Gem-quality anorthoclase from Borkeo, Ratanakiri Province, Cambodia. Figure 2 (top right). Gem-quality anorthoclase...anorthoclase in alkali basalt, Borkeo, Ratanakiri Province, Cambodia. Figure 3 (bottom right). Gem-quality...Kriri Vattana Ram Ting Jak Monastery, Ratanakiri Province, Cambodia. 194ââ ROCKS & MINERALS lithospheric |  | Piilonen, Paula, Sutherland, F., DaniĹĄĂk, Martin, Poirier, Glenn, Valley, John, Rowe, Ralph (2018) Zircon Xenocrysts from Cenozoic Alkaline Basalts of the Ratanakiri Volcanic Province (Cambodia), Southeast AsiaâTrace Element Geochemistry, O-Hf Isotopic Composition, U-Pb and (U-Th)/He GeochronologyâRevelations into the Underlying Lithospheric Mantle. Minerals, 8 (12) 556 doi:10.3390/min8120556 | Journal (article/letter/editorial) | | Cenozoic Alkaline Basalts of the Ratanakiri Volcanic Province (Cambodia), Article Southeastfrom AsiaâTrace...Isotopic U-Pb and (U-Th)/He the Ratanakiri Volcanic Composition, Province (Cambodia), GeochronologyâRevelations...Zircon xenocrysts from alkali basalts in Ratanakiri Province, Cambodia represent a unique low-Hf zircon from...Abstract: Zircon xenocrysts alkali basalts Ratanakiri Province, Cambodia represent a unique low-Hf zircon ({100}...Keywords: zircon; xenocryst; alkali basalt; Ratanakiri Volcanic Province; trace elements; O-isotopes and Hf-isotopes; |  | | Journal (article/letter/editorial) | | pegmatite situated in the Borborema Pegmatitic Province (BPP) from Rio Grande do Norte in Northeast Brazil...ultramafites. These sapphires were formed together with a spinelâchloriteâmuscovite rock during the metasomatic...alluvial sapphires from the Orosmayo region (Jujuy Province, NW Argentina) and importantly shows that there...zircon xenocrysts from alkali basalts in Ratanakiri Province (Cambodia) suggest that their genesis involved...A. Origin of Blue Sapphire in Newly Discovered SpinelâChloriteâMuscovite Rocks within Meta-Ultramafites |  | Kirkland, Christopher L., DaniĹĄĂk, Martin, Marsden, Ruby, Piilonen, Paula, Barham, Milo, Sutherland, Lin (2020) Dating young zircon: A case study from Southeast Asian megacrysts. Geochimica et Cosmochimica Acta, 274. 1-19 doi:10.1016/j.gca.2020.01.013 | Journal (article/letter/editorial) | | (U-Th)/He geochronology to zircon megacrysts from Cambodia and Thailand. These zircon megacrysts formed in...geology Southeast Asia, including Thailand and Cambodia, comprises two dominant crustal blocks, the Indochina...which extends from eastern Thailand, Laos, across Cambodia and into southern Vietnam, rifted away from the...are collectively known as the SE Asian Volcanic Province (Fig. 1). Two separate periods of volcanism are...Flower, 1998). Zircon along with gem corundum, spinel, anorthoclase, olivine, alkali amphiboles, biotite |  | | Book | | Kotlyarov Origin of Blue Sapphire in Newly Discovered SpinelâChloriteâMuscovite Rocks within Meta-UltramaďŹtes...Alluvial Sapphires from the Orosmayo Region, Jujuy Province, Northwest Argentina: Insights into Their Origin...Cenozoic Alkaline Basalts of the Ratanakiri Volcanic Province (Cambodia), Southeast AsiaâTrace Element...pegmatite situated in the Borborema Pegmatitic Province (BPP) from Rio Grande do Norte in Northeast Brazil...ultramaďŹtes. These sapphires were formed together with a spinelâchloriteâmuscovite rock during the metasomatic |  | Phyo, Myint Myat, Wang, Hao A.O., Guillong, Marcel, Berger, Alfons, Franz, Leander, Balmer, Walter A., Krzemnicki, Michael S. (2020) UâPb Dating of Zircon and Zirconolite Inclusions in Marble-Hosted Gem-Quality Ruby and Spinel from Mogok, Myanmar. Minerals, 10 (2) 195 doi:10.3390/min10020195 | Journal (article/letter/editorial) | | Inclusions in Marble-Hosted Gem-Quality Ruby and Spinel from Mogok, Myanmar Myint Myat Phyo 1,2 , Hao A...in gem-quality ruby and spinel or as accessory minerals in ruby- and spinel-bearing marble and adjacent...rim of zircon inclusions in gem-quality ruby and spinel are 22.26 Âą 0.36 Ma and 22.88 Âą 0.72 Ma, respectively...simultaneous formation of ruby and spinel in the Mogok area. In ruby- and spinel-bearing marble from Bawlongyi...Belt (MMB), we deduce that gem-quality ruby and spinel from Mogok probably formed during a granulite-facies |  | van der Meer, Quinten H.A., Scott, James M., Serre, Simon H., Whitehouse, Martin J., Kristoffersen, Magnus, Le Roux, Petrus J., Pope, Emily C. (2019) Low-δ18O zircon xenocrysts in alkaline basalts; a window into the complex carbonatite-metasomatic history of the Zealandia lithospheric mantle. Geochimica et Cosmochimica Acta, 254. 21-39 doi:10.1016/j.gca.2019.03.029 | Journal (article/letter/editorial) | | region, which was located inboard Gondwana (Western Province). A series of accreted sedimentary terranes outboard...outboard of the former arc constitute the Eastern Province. The Median Batholith, which represents the position...sediments in Otago on the South Island (Eastern Province; former fore-arc) and the sub-Antarctic Campbell...Campbell Island in the Southern Ocean (Western Province; former back-arc), Fig. 1. Both locations are associated...metasedimentary crust of the Rakaia Terrane (Eastern Province). Waipiata Formation rocks are generally monogenetic |  | Sutherland, Frederick L., Graham, Ian T., Harris, Stephen J., Coldham, Terry, Powell, William, Belousova, Elena A., Martin, Laure (2017) Unusual rubyâsapphire transition in alluvial megacrysts, Cenozoic basaltic gem field, New England, New South Wales, Australia. Lithos, 278. 347-360 doi:10.1016/j.lithos.2017.02.004 | Journal (article/letter/editorial) | | 1200â1900 ppm, West Pailin, Cambodia (Zaw et al., 2015); ~ 480â1230 ppm, Yen Bai Province, North MA Vietnam...sapphire from the Tan Huong â Truc Lau area, Yen Bai Province, northern Vietnam. Gems & Gemmology, 47, 182â195...zircon-rich gem deposits, Bo-Loei, Ratanakiri Province, Cambodia: Trace elements, inclusions, UâPb dating...115â121. MA NU Wilkinson, J. F. G., 1975. An Al-spinel-ultramafic-mafic inclusion suite and high pressure...magma at moderate pressure: Evidence from an Al-spinel ultramaficmafic inclusion suite. Contributions |  | | Book | | Inclusions in Marble-Hosted Gem-Quality Ruby and SpinelfromMogok,Myanmar Reprinted from: Minerals 2020...China and many parts of SE Asia (Vietnam, Laos, Cambodia, Malaysia, Thailand, Indonesia, Myanmar and Malaysia)...ensemble in which ruby and sapphire associate with spinel and sapphirine in a highly calcic anorthosite-layered...new detailed UâPb dating on gem-quality ruby (and spinel) by using zircon and zirconolite inclusions in...zirconolite grains were analyzed from ruby and spinel crystals. Analyses were made of core and rim zones |  | Krebs, Mandy, Hardman, Matthew, Pearson, David, Luo, Yan, Fagan, Andrew, Sarkar, Chiranjeeb (2020) An Evaluation of the Potential for Determination of the Geographic Origin of Ruby and Sapphire Using an Expanded Trace Element Suite Plus SrâPb Isotope Compositions. Minerals, 10 (5) 447 doi:10.3390/min10050447 | Journal (article/letter/editorial) | | sapphire group; and (4) Australia, Thailand, and Cambodia for basalt-related rubies and sapphires [4,5,20]...to represent a deposit near Ampanihy, Toliara Province in southwestern Madagascar (George Harlow, pers...rubies, which contain mainly amphibole, garnet, and spinel inclusions [23,25â28]; (3) The oxygen isotope (δ18...calcite, dolomite, dolomite,apatite, apatite,spinel, spinel,zircon, zircon,and andmica. mica.In Inaddition...Myanmar), including low Fe contents and rutile silk, spinel, zircon, and apatite inclusions [37,38]. Details |  | | Journal (issue) | | Afghanistan ⢠Serpentine catâs-eye ⢠Zircon mining in Cambodia ⢠Conference reports S1 Letters S6 Book Reviews...assemblage of olivine, orthopyroxene, clinopyroxene, and spinel (Dupuy et al., 1987). The nodules are clearly visible...3. Olivine-rich nodules containing pyroxene and spinel are hosted by basalts of Plio-Pleistocene age at...rarely observed were minute dark crystals (probably spinel, seen in three samples), parallel twinning (in...Dostal J., Bodinier J.-L. (1987) Geochemistry of spinel peridotite inclusions in basalts from Sardinia |  | | Journal (issue) | | pieces. A few far rarer materials comprised two pink spinel cabochons, one faceted colorless topaz (presumably...Diamond Jewellery. The Executive Board of the Province Council of Antwerp, Antwerp, pp. 23â36. Schmetzer...Diamond Jewellery. The Executive Board of the Province Council of Antwerp, Antwerp, pp. 13â22. Walgrave...Diamond Jewellery. The Executive Board of the Province Council of Antwerp, Antwerp, pp. 37â53. GEMS...(albite-anorthoclase-oligoclase), pyrochlore, hercynite spinel, and ilmenite (titanohematite series). Geochemical |  | | Journal (issue) | | straddles the border between present-day Thailand and Cambodia. Although the sensational quality of Kashmir sapphire...its eastern provinces, including Pailin (now in Cambodia), to the French colonial regime in what was then...10). Thailandâs ruby production, mainly in Trat Province, was sporadic through the early years of the 20th...develop into significant producers. Cambodia and Laos. In Cambodia, most sapphire production over the...Mingxi in Fujian Province (Keller and Keller, 1986; Guo, 1992) and Changle in Shandong Province is comparable |  | | Journal (article/letter/editorial) | | inert and mechanically strong mineral hosts (e.g., spinel, ilmenite, zircon) from the least deformed rock...g/t Au) showings in the northern part of this province highlights further exploration potential. The...Raahe-Haapajärvi province and at Jokisivu (1.9 Mt@ 5.8 g/t Au) in the Pirkkala province. The basement of...ore at some places. In the Seinäjoki and Pikkala province, turbiditic rocks are also common hosts of orogenic...deposits. In the Seinäjoki province, and subordinately in the Pirkkala province (Jokisivu deposit) composition |  | | Journal (issue) | | colour in sapphire|Petroleum inclusion in pink spinel|Spurrite from New Mexico, USA|Tsavorite mining...danburite; heat treatment of spinel from Mahenge, Tanzania; cobalt diffusion-treated spinel; a challenging Ramaura...include natural and synthetic ruby, sapphire and spinel. Origins include 31 countries and five types of...the Gogogogo area, north of Ampanihy in TulĂŠar Province. One 8 of the authors (FP) obtained about 120...well-known source of several gem varieties, particularly spinel and ruby. During the 2016 Tucson gem shows, Steve |  | | Book | | Thailand/Cambodia ruby 439 Characteristics ofThai/Cambodian sapphire 442 Bibliography-Thailand/Cambodia 450...crystal (586 et), surrounded by four Burmese red spinel octahedra (1.12 et total) and four alluvial diamond...best are chose called amethystizontes [ALnandire: spinel?] because on the crystal points cheir fire resembles...Although Libya is mentioned, we know of no ruby or spinel coming &om this area. Once again this points up...possible. No longer would learning be the sole province of clergy and nobility. This single development |
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