 | | Journal (issue) | | November-December 2000 Volume Thirty-one, Number Six MOZAMBIQUE! Africa in the Mineralogical R e c o rd .......ELBAITE crystal, 7.3 cm, from the Alto Ligonha district, Mozambique. American M useum of Natural History collection...present our first article on mineral occurrences in Mozambique, but certainly not the first to deal with African...20:191-200 MALAWI Zomba district, 25:29-35, 38 MOROCCO Bou-Azzer, 9:69-73 Toussit mine, 11:59-61, 15:347-350...15:347-350 NAMIBIA Kombat mine, 22:421-425 Tsumeb (special issue, vol. 8, no. 3) Tsumeb, 13:137-147, 13:155-157 |  | | Journal (issue) | | (a variety of zoisite), 9 cm, from the Merelani mine, located on the slopes of the Lelatema Mountains...color zoning, 5.1 cm, from Rubaya, North Kivu Province, Democratic Republic of Congo Back cover: Top...Top left: Euclase, 2.2 cm, from the La Marina mine, Colombia. Top right: Topaz, 8.4 cm, from Ouro Preto...left: Phosphophyllite, 2 cm, from the Unificada mine, Potosi, Bolivia. Bottom right: Grossular, 3.5 cm...January–February, 2023 5 Figure 3. Amethyst crystal group, 11 cm, from the Goboboseb Mountains, about 35 miles |  | | Report (issue) | | describes his recent visits to a small former fluorite mine 2.5 kilometers north of the village of Mihalkovo...border with Greece. Until its closure in 1994 this mine produced fluorite for industrial uses, and, it seems...after calcite, from the Broken Hill mine, Aggeneys, Northern Cape Province, South Africa. Have I ever pictured... 14.2 cm, from the Broken Hill mine, Aggeneys, Northern Cape Province, South Africa. Via Mineralia specimen...transparent, deep purple cubic crystals on drusy quartz, in some cases with platy white barite crystals |  | | Journal (article/letter/editorial) | | inclusions become increasingly common towards the quartz cores of the pegmatites, and are considered to...important implications for the formation of the quartz cores of pegmatites. The possible origin of the...gel inclusions, origin of alkali carbonate melts, quartz core formation. Introduction PREVIOUS studies...common presence of massive almost monomineralic quartz cores, which indicates the deposition of very large...solubility of quartz in hydrothermal solutions is used to explain the presence of this quartz, a mass balance |  | | Journal (article/letter/editorial) | | inclusions in morganite crystals from the Muiane pegmatite, Mozambique and some remarks on the paragenesis...inclusions in morganite crystals from the Muiane pegmatite, Mozambique, show that the inclusions have extremely...granite pegmatites in the Alto Ligonha region of Mozambique, currently mined for tantalum and gemstones (topaz...1999). Paragenetic minerals here are microcline, smoky quartz, lepidolite, rubellite, beryl, and danburite...colored beryl) from the Muiane Ta-Nb-Li-pegmatite in the Alto Ligonha region, Mozambique. The sample comes |  | | Journal (article/letter/editorial) | | important and will not be treated here. Pegmatites as a group have numerous features which must be explained by...rich pegmatites, simple pegmatites containing only quartz, feldspar, and possibly muscovite are both numerically... 2004). A careful study of fluid inclusions in quartz in a large number of pegmatites (above mentioned)...measurements on two-phase fluid inclusions in pegmatite quartz (72 samples from 39 pegmatites world-wide) using...the experimental crystal growth of hydrothermal quartz we know that the solubility of SiO2 can be extremely |  | | Catalog/List | | Signature® Internet Session 2 Heritage Auctions Design District Annex 1518 Slocum Street • Dallas, TX 75207 (HERITAGELive...Africa, it’s of Africans as well: as diverse a group as any you’ll find anywhere on the planet. The first...collection, a lot of it collected when the Tsumeb Mine (as well as other mines of the region) were still...climbing soon brought him into contact with the quartz crystals that were found on the mountain slopes...Africa, Swaziland, South Africa, Rhodesia, and Mozambique. Warren Taylor (1949 to present) Warren Taylor |  | | Journal (issue) | | ..................13 by C. J. Stefano The Cliff Mine, Keweenaw County, Michigan...........................25 by C. J. Stefano & P. Persson The Central Mine, Keweenaw County, Michigan........................53 by P. Persson & C. J. Stefano The Copper Falls Mine, Keweenaw County, Michigan...........................85 by C. J. Stefano & P. Persson The Phoenix Mine, Keweenaw County, Michigan........................you to become a Fellow and join this important group. Contact Tom Gressman (tom.gressman@minrec.org, |  | | Journal (issue) | | . . . . . . . 217 by A. R. Kampf The Dee North mine, Elko County, Nevada . . . . . . . . . . . . . ...crystal cluster, 13.6 cm, from the famous Malmberget mine, Gällivose, Lapland, Sweden. Peter Lyckberg collection;...Jackson to take over the operation of the Rock Candy mine (the subject of a 1981 article by Joe in the Mineralogical...education and organized a “Friends of the Museum” group which met for an evening’s lecture almost monthly...the winters. Soon there was a newsletter, and the group swelled to more than 200 members. Cash customers |  | | Journal (issue) | | tgressman@comcast.n et The Musonoi mine, Kolwezi District, Lualaba Province, Democratic Republic of the Congo...METATORBERNITE, 6.6 cm, from the Musonoi mine, Kolwezi District, Democratic Republic of the Congo. Scott...for the Mineralogical Record: on the Port Radium District in the Northwest Territories (1989) and on the...the best grossular garnets from the Jeffrey mine (2015). The Yukon Territory has been one of Rod's specialties...west of the Mackenzie River Delta. The Nanisivik mine on Baffin Island was another prolific locality pioneered |  | | Catalog/List | | 10:00 AM – 5:00 PM CT Heritage Auctions Design District Annex 1518 Slocum Street • Dallas, TX 75207 Session...5:00 PM ET LOT VIEWING Heritage Auctions Design District Annex 1518 Slocum Street • Dallas, TX 75207 Thursday...‘normal’ habit, often in conjunction with euhedral Quartz crystals. The potential for new discoveries and...grow. 73001 TOURMALINE Momeik Township, Kyaukme District, Shan State, Myanmar (Burma) Looking almost like...like a sphere, this crudely trigonal crystal group presents as a roughly pyramidal knob of Tourmaline |  | | Journal (issue) | | subscribers should add GST. Discounts are available for group subscriptions, renewals, GIA alumni, and current...moving products from mine to consumer. The main cover image was taken at the AnahÌ mine in Bolivia, a major...and (8) a 13.94 cuprian elbaite tourmaline from Mozambique, courtesy of Pala International and Barker &...instrumentation such as LA-ICPMS—once primarily the province of academia—became a fixture in many gemological...company. The main shareholders were Anglo-American Group, 45%; Central Holdings, the Oppenheimer family trust |  | | Book | | Litchfield County, where good crystals were taken from quartz veins in a variety of metamorphic, plutonic and...Litchfield, where a mass of white quartz on a ridge had once been mined for quartz, and large ilmenite masses...ilmenite crystals to 7 .5 cm in matrix of massive quartz from these dumps-adding that, in his judgment,...MALAWI Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...Springfield show ( 1995: 582). Madawaska [Faraday] mine near Bow Lake, Hastings County. Some of the world's |  | | Journal (issue) | | p. 258 COVER: COPPER, 8.3 cm, from the Central mine, Keweenaw County, Michigan—considered by some to...on DVD wilensky Fluorite, Huanzala mine, Dos de Mayo Province, Peru. Wilensky Fine Minerals 14 Longview...2008 associated with quartz, including distinctive and beautiful Japanlaw quartz twins. Other crystals...pseudomorphs after pyrite. The exceptional epidote and quartz specimens produced over the past 100 years have...and Other Minerals from the Mammoth-St. Anthony mine, Tiger, Pinal County, Arizona Chapter authors: Les |  | | Report (issue) | | elbaite crystals with lepidolite from the Golconda Mine in Minas Gerais, Brazil by Eberhard Equit, 1993...the Tourmaline Group . . . 10 Species by Species - The Minerals of the Tourmaline Group ................history The first recognition of a tourmaline group mineral deserving a permanent name is attributed...change in the nomenclature of chemistry. In 1787 a group of French chemists and mineralogists drafted a plan...1816 that there were two members of the schorl group: common schorl and tourmaline (all colors other |  | | Book | | Einschlüsse im Quarz Magie World: lnclusions in Quartz Vorwort Foreword Einführung 7 8 1ntrod...Sulfates, Wolframates Carbonates Silicates Synthetic quartz Final comments Acknowledgements References Photo...only represent a small and limited selection of quartz inclusions and should encourage the readers to...venture on their own journey into the magic world of quartz inclusions, maybe discovering a new, fantastic...aber auch wunderschöne crystals in pegmatites, quartz Kristalle in Pegmatiten, Quarzveins, ore deposits |  | Popov, Daniil V., Spikings, Richard A., Scaillet, Stéphane, O'Sullivan, Gary, Chew, David, Badenszki, Eszter, Daly, J. Stephen, Razakamanana, Théodore, Davies, Joshua H.F.L. (2020) Diffusion and fluid interaction in Itrongay pegmatite (Madagascar): Evidence from in situ 40Ar/39Ar dating of gem-quality alkali feldspar and U Pb dating of protogenetic apatite inclusions. Chemical Geology, 556. 119841pp. doi:10.1016/j.chemgeo.2020.119841 | Journal (article/letter/editorial) | | UePb dates). interpret the pyroxene-phlogopite, quartz-feldspar and pyroxene-feld spar rocks (types 1–3)...coarse-grained rocks consisting of pyroxene, feldspar, quartz and titanite (type 7) is unclear. We observed a...rocks (greenish yellow grains tend to occur with smoky quartz in brecciated samples; Fig. 2G-I). In contrast...observed the following seven rock types (1–7): (1–2) quartz-feldspar rocks that are sometimes interlayered...brecciated pegmatitic rocks that consist of smoky quartz and green feldspar (Fig. 2H, I), and (7) very |  | | Journal (issue) | | probably the finest specimen known of any microlite-group species; 1.7-cm crystal in lepidolite, from Paprock...Mineralogy of the Spring Creek area, Last Chance Mining District, Plumas County, California. Axis, volume 1, number...and 1909, the mines of the Last Chance mining district produced significant quantities of copper and...over 65 mineral species in a complex polymetallic quartz vein system, including bismutoferrite, bismutostibiconite...hospitals and infirmaries near the East Group and Central Group mines at Likasi, Kipushi, Lubumbashi, Kakanda |  | | Journal (issue) | | orientated perpendicular to the c-axis. A tourmaline-quartz combination from Brazil has an iridescent chatoyancy...4). Some new unusual cat's-eyes and star stones Quartz-tourmaline cat's-eye from Brazil A strange stone...was covered by colourless rock crystal so this quartz-tourmaline stone is a sort of 'natural doublet'...J. Hyrsl. 451 451 Figure 5: Tourmaline and quartz (27.58 ct) with an iridescent chatoyancy, a sort...by J.Hyrsl. Figure 6: Chatoyant tourmaline and quartz, side view. Photo by J. Hyrsl. After cutting into |  | | Book | | Court Edinburgh EH1 1YL (A Division of Longman Group Ltd) ISBN 0 05 001709 8 First published 1970 © The...RELATIONSHIP OF THE MALAWI CARBONATITEALKALINE PROVINCE AND THE LUPATA-LEBOMBO VOLCANICS 237 A, R. Woolley...Gass 14 THE EVOLUTION OF THE TIBESTI VOLCANIC PROVINCE, EASTERN SAHARA P. M., Vincent : 15 THE STRUCTURAL...concentrations. Such was the study of the Nuanetsi Igneous Province in Rhodesia. The ring complexes there appeared...200. The parent magma of the British Tertiary Province. Summ. Progr. geol. Surv. G.B., Pt. 2 (for 1930) |  | | Book | | tourmaline crystals from William Larson’s Stuart Mine in the Pala Mountains, California (USA). Next to...100 Peridot: green-golden ray of sunshine 104 Quartz: bustling globetrotter 108 Spinel: the corundum’s...crystal on calcite and quartz from the hydrothermal deposits of the Muzo Mine, Colombia. Collection:...fluorine in topaz and boron in tourmaline. In a third group, the mineral crystallization is truly unique: The...gemstones in vein systems (fluorapatite, fluorite, quartz, topaz, etc.) 10 Olive green Contact metamorphism |  | | Journal (issue) | | separations for Gems & Gemology are by Vertis/The LTC Group, Carlsbad, California. Printing is by Fry Communications...marketed, and merchandized. In diamonds especially, the mine-to-market process has been severely tested. Vertical...jade [both jadeite and nephrite], opal, peridot, quartz, spinel, tanzanite, topaz, and tourmaline). Locality...reference to the country rather than to the specific mine or region. For more on the specific localities,...These aquamarines (9.05 and 4.90 ct) are from Mozambique. Courtesy of Steve Avery; photo by Robert Weldon |  | | Journal (issue) | | International Tucson 2010 • Ametrine from the Yuruty mine, Bolivia • Andradite from China • Barite from Brazil...“Soufflé” freshwater cultured pearls • “Churrasco quartz” from Brazil • Cat’s-eye rhodonite • Large H-rich...subscribers should add GST. Discounts are available for group subscriptions, renewals, GIA alumni, and current...“Paraíba”-type Tourmaline from Brazil, Nigeria, and Mozambique: Chemical Fingerprinting by LA-ICP-MS Identification...Gray-Blue-Violet Hydrogen-Rich Diamonds from the Argyle Mine Hackmanite/Sodalite from Myanmar and Afghanistan |  | | Journal (issue) | | Longkin worksite, north of323 Pharkant mining district, northern Myanmar. This jadeite had a full green...which are said to be very close to the chrysocolla mine (see p.330). The RI of the pink opal is 1.45 1.49...material) and SG of 2.18, and was accompanied by quartz with minor plagioclase, sericite, sanidine, apatite...wide. 323 The Peruvian pink opal also has sharp quartz lines, which indicates that pink opal from Peru...rough on the left is 4 cm wide. The Acari copper mine near Nazca in Arequipa department (close to the |  | | Book | | Emeralds and Beryls as 157 Beryl Structure, Space Group and Symmetry Elements, Talismans, 95 159 Emeralds... (Tanganyika), Turkey, 513 Republic, 481 Mozambique, 508 Union of Soviet Socialist (French Morocco)... But if antiquities, so an and scriptions quartz] “it of a to seems only two that be For...pearl, zircon, coral, soberyl, garnet, carnelian, quartz, and 10 as The shown gems on a emerald...that emeralds et it is called to Tibetan same group directly belongs traceable.” 12 ‘‘were Furthermore |
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