 | | | | Minerals have oxygen tightly Olivine, garnet, epidote, vesuvianite, rhodonite, beryl, tourmaline, mica...cassiterite (dark reddish brown, black), p. 120 epidote (green), p. 180 White borax (colourless, white)...p. 112 gypsum (white), p. 124 dolomite (grey, pink), p. 280 diamond (colourless), p. 86 halite (white)...(colourless, white, variable), p. 218 thodochrosite (red, pink), p. 152 spinel (red, brown, black), p. 110 rhodonite...Precambrian, Shield constitutes the stable core of the North American con- tinent. These ancient rocks vary |  | | Book | | around a central silicon aton1. Olivine, garnet, epidote, vesuvianite, kyanite, topaz, titanite, zircon...rnssiterite (dark reddish brown, black), p. 120 epidote (green), p. 180 Greyish white White borax (colourless...calcite (white, variable), p. 138 dolomite(grey, pink), p. 280 baryte (white, pale blue), p. 132 chrysotile...{white, brown, black), p. 204 rhodochrosite (red, pink), p. 152 rhodonite (red, brown-red), p. 202 siderite...Plains of the Midwest, the Arctic Lowlands to the north, and the Hudson Bay Lowlands which infills the 111iddle |  | | Report (issue) | | International, LLC P.O. Box 263, East Hampton, CT 06424, USA Phone 1.860.267.1512; fax 1.860.267.7225 www.lapisint...CHRISTIAN WEISE VERLAG, GERMANY AND LAPIS INTERNATIONAL, USA Tourmaline ⌠History ⌠Mineralogy ⢠Tourmaline............. 34 Bernhard Wohrmann ⢠News from the Star .................. 39 Joachim Zang, Alexander U...... 83 Europe (west) ...................... 85 North America ..................... 89 South America ...the old mine portal on the north side of the Himalaya Mine in San Diego County, CA. D. Sterrett photo provided |  | | Journal (article/letter/editorial) | | which has implications for the assembly of the north Australian cratonic 2- Regional Geology of the...between the Kimberley Craton to the northwest and the North Australian Craton to the east, as well as the deformed...Ramsey Range and Springvale faults and (in the far north) by the Halls Creek Fault (Fig. 1). The oldest ...D 5a). Convergence of the Kimberley Craton and North Australia Craton during the 1870-1850 PT E Ma...considered to represent suturing of the Kimberley and North Australian cratons (Sheppard et al., 2001; Sheppard |  | | Journal (issue) | | presentations and special reports|GIT Lab Updates|USA lifts ban on Burmese ruby and jadeite|Margaritologia...inclusions|Clinohumite from Vietnam|Lace opal from Utah, USA|Pollucite from Pakistan with polylithionite inclusions|Large...bangles resembling jadeite|Large pink sapphire with diffusioninduced star|Mid-year 2016 Myanma Jade & Gems...poised to become a significant producer of rubies and pink sapphires. These rubies recovered from the Aappaluttoq...p. 287 ARTICLES Feature Articles 294 Ruby and Pink Sapphire from Aappaluttoq, Greenland By Christopher |  | | Book (edition) | | ; Labradorite, Moonstone, 106 Axinite, 108 Epidote, 108 ; Cassiterite, Rutile and Apophyllite,...: Decorative or âGems and Precious Stones of North and H. A. Miers. Natural The of South Africa... Indigo blue. Bluish green. pink. Rose . yellow . white pink. Sea green. Grey blue. Azure...None 7 7i 7I IO 3'57 8 4âoo 9 4' 75 7i PINK STONES. STONES. PLEOCHROISM. Tourmaline 3'°5...Diopside Peridot .... .... .... .... .... Epidote Spinel .... ..... Alexandrite Demantoid Sapphire |  | | Report (issue) | | other institu tions in Madagascar, Italy, and the USA. Several expeditions have continued the research...Munich, Germany P.O Box 263, East Hampton, CT 06424 USA Phone l -860-267-1512, Fax 1-860-267-7225 www.lapisint...mineralogy in Madagascar. Translation by Alfredo Petrov (USA), Federico Pezzotta (Italy), GUnther Neumeier (Germany)...WEISE VERLAG, MUNICH; AND LAPIS INTERNATIONAL; USA. extraLapis English No. I Madagascar Ores, Gold...Marosohihy 32 Marovoalavo (south) 28 Marovoalavo (north) 6 1 Masoala 40 Menazomby 43 Miakanjovato 44 Milanoa |  | | Book | | Instead of the usual opaque shapeless masses of green, pink or grey rock, it now appeared as transparent crystals...enhance the value of gemstones are the catâs-eye and star effects. These are produced in stones cut as cabochons...appearance of a four-, six- or even twelve-rayed star. These are the main characteristics which give gemstones...active on earth for thousands of millions (billions USA) of years and which continue to operate to the present...fluorite (top row). Far right The star stones and cat's-eyes of Burma: pink, yellow and purple scapolite |  | | Journal (issue) | | lead glassâfilled orange sapphire ⢠LPHT-annealed pink CVD synthetic diamonds ⢠Near-colorless melee-sized...Iridescent musgravite ⢠Catâs-eye phenakite ⢠Unusual pink sapphire bead ⢠Bicolor double-eye tourmaline 198...Purple scapolite ⢠Synthetic star sapphire with diffusion-induced color and star ⢠Partially filled blue chalcedony...⢠Unusual combination of inclusions in synthetic star sapphire ⢠Diamond slices ⢠Large Namibian demantoid...Mouawad Campus 5345 Armada Drive Carlsbad, CA 92008 USA Š 2015 Gemological Institute of America All rights | | | Book | | Instead of the usual opaque shapeless masses of green, pink or grey rock, it now appeared as transparent crystals...enhance the value .of gemstones are the cat's-eye and star effects. These ar e produced in stones cut as cabochons...appearance of a four-, six- or even twelve-rayed star. These are the main characteristics which give gemstones...active on earth for thousands of millions (billions USA) of years and which continue to operate to the present...fluorite (top row) . Far right The star stones and cat's-eyes of Burma : pink. yellow and purple scapolite |  | HUANG, J., XIAO, Y., GAO, Y., HOU, Z., WU, W. (2012) Nb-Ta fractionation induced by fluid-rock interaction in subduction-zones: constraints from UHP eclogite- and vein-hosted rutile from the Dabie orogen, Central-Eastern China. Journal of Metamorphic Geology, 30 (8) 821-842 doi:10.1111/j.1525-1314.2012.01000.x | Journal (article/letter/editorial) | | Sciences, University of Houston, Houston, TX 77204, USA (ygao@mail.uh.edu) 3 Geological Survey of Anhui Province...formed during the Triassic collision between the North China and Yangtze Blocks (Fig. 1a). It represents... 08bxl14 120km Rive r Ta nl ufa ul t an NorthChina Block Su-Lu 08bxl13 Dabie 08bxl12 08bxl11...08bxl11v Hongâan Bixiling N Profile Sou thtoNorth (a) 08bxl09v 250 m YangtzeBlock 3 km Fig....sample localities along a 2 km proďŹle from south to north. Three vein-and-host rock sets (red-and-white circle |  | Manalo, P. C., Dimalanta, C. B., Villaplaza, B. R. B., Brown, W. W., Yumul, G. P. (2017) Magnetic Exploration of Structurally Controlled Mineralization at Low Latitudes: A Case from the Masara Gold District, Mindanao, Philippines. Economic Geology, 112 (7) 1807-1817 doi:10.5382/econgeo.2017.4530 | Journal (article/letter/editorial) | | et al., 2003). (B) The Masara gold district (pink star) is located on Mindanao Island, southern Philippines...extensive alteration of hornblende to chlorite and epidote. The Alipao Andesite is a porphyritic andesite...exhibit trachytic textures and are mostly altered to epidote, chlorite, and calcite. The Lamingag Intrusive...line km were flown 40 m above canopy following a north-south flight direction. Flight lines were 60 m apart...the equator include (1) difficulty in detecting north-south structures except where structures Downloaded |  | Garçon, Marion, Chauvel, Catherine, France-Lanord, Christian, Huyghe, Pascale, LavĂŠ, JĂŠrĂ´me (2013) Continental sedimentary processes decouple Nd and Hf isotopes. Geochimica et Cosmochimica Acta, 121. 177-195 doi:10.1016/j.gca.2013.07.027 | Journal (article/letter/editorial) | | southern 151 flank of the Himalayan Range in the north and the Chambal River, which drains part of 152...minerals). 172 Heavy minerals include amphibole, epidote, garnet and many accessories such as 173 titanite...River in Nepal at an altitude of ca. 250 193 m (pink star in Figure 1). The precise locations of these samples...at different times in the past (green and 701 pink lines in Figure 11, see Figure caption and Chauvel...oceanic crust and overlying sediments 706 (grey star in Figure 11) assuming a mixture of 10â20% oceanic |  | | Journal (article/letter/editorial) | | 5241 Broad Branch Rd. NW, Washington, DC 20015, USA. Tel.: +1 202 478 8820; fax: +1 202 478 8821. E-mail...the NGB (Fig. 1) is dominated by a large-scale North-closing synform plunging moderately to the South...basaltic greenstones mainly composed of chloriteâepidoteâquartzâplagioclaseâactinolite (OâNeil et al., 2007)...Fig. 2; open plusses, trondhjemitic bands; open star, pegmatite. between the 142 Nd/144 Nd ratios and...Rizo et al. (2011) and Bennett et al. (2007); green star, Isualike depleted reservoir (IDR) isotopic composition |  | | Journal (issue) | | 461 REGULAR FEATURES 474 Lab Notes Four-rayed star chrysoberyl ⢠Internal etch channels in diamond...demantoid ⢠âGalaxyâ inside a diamond ⢠Omphacite in pink diamond ⢠Aegirine in poudretteite from Myanmar...Mouawad Campus 5345 Armada Drive Carlsbad, CA 92008 USA Š 2022 Gemological Institute of America All rights...bluish green omphacite crystal in a Fancy brown-pink diamond, aegirine crystals in two rare samples of...solid inclusions as well as their color range from pink to red. In addition, samples 45 and 46 were selected |  | | Journal (issue) | | Full-Day Sponsor, Monday, August 28 H2 Events SAFDICO USA INC Cappuccino Kiosk Full-Day Sponsor, Tuesday...cushion cut, an 11.25 ct hot orangy pink round, and an 11.40 ct pink oval. Photo by Robert Weldon; courtesy...its blue and pink siblings in recent years, even though it has the same potential. Pink sapphires, along...with other pink gems, gained momentum due to the publicity surrounding celebrity-worn pink diamonds. Yellow...heat-treated ruby, though this situation is changing. Pink and blue spinels are also gaining ground on other |  | | Journal (article/letter/editorial) | | (Ossaka et al., 1980a, b). Fumaroles about 400 m north of Yugama at ~2000 m elevation have compositions...southwestdipping Hatchobaru fault and, 1 km to the north, the northeast-dipping Komatsuike fault (Shimada...(Kiyosaki et al., 2003, 2006). At Otake, 2 km to the north, most alunite near the surface has δ34S values >20...acidic springs in the central Kirishima area, the north Kirishima area that has experienced cooling (Taguchi...Taguchi & Hayashi, 1983; Taguchi et al., 1984); the north Kirishima area has cooled by âĽ100 C since peak |  | | Catalog/List | | Africa Collection Estimate: $1,200-$1,800 57005 Pink Smithsonite Tsumeb Mine, Tsumeb, Otjikoto Region...colorless material. Here, it is likely that the pink coloration is due to Manganese being included into...fissure. These fragments were cemented together by the pink crust of Smithsonite crystals that are so prominent...Tsumeb Mine. In this case, a white Calcite, and pink undetermined mineral matrix, play host to several...the âthumbnailâ sized specimen is a deep, reddish pink hue, with much less of the orange component sometimes |
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