 | | Journal (article/letter/editorial) | | TOPAZ A • MINERALOGICAL • REVIEW Downloaded by [New York University] at 21:04 11 May 2015 Coveted...specimens from the National Museum of Natural History TOPAZ IS THE STATE GEM of Texas and Utah; however, it...the "big three" (emerald, sapphire, and ruby), topaz is nevertheless regarded as an important and prized...attributes is that, unlike many other gem minerals, topaz may occur in crystals large enough to cut giant...giant gemstones. Gems such as the Champagne Topaz (36,853 carats), the American Golden (22,875 carats), and |  | | Journal (article/letter/editorial) | | COLORADO TOPAZ Topaz, Al Si0 (F,OH) is one of Colorado's better known gem minerals. Though Col orado...orado topaz may not compare in size with that found in Brazil, gemmy crystals up to 4 inches have been found...(1882), the first record ed discovery of Colorado topaz was made about 1880 by a Mr. Thiebald,* "a prospector...the Crystal Park area. The largest fine-quality topaz specimens in Colorado occur in several separate...Hutchinson 1988; Foord 1995); see figures 1 and 2. Topaz-bearing peg matites are frequently associated with |  | | Journal (issue) | | TOPAZ, I J.INERALOGICAL RECORD JANUARY-FEBRUARY 1995 • VOLUME 26 NUMBER 1 • $10 Wayne & Dona Leicht...Heidelberg, W. Germany Eric Offermann Arlesheim, Switzerland Jeffrey A. Scovil Phoenix, AZ Harold and Erica......................... 5 by M. A. Menzies Pink topaz from the Thomas Range, Juab County, U ta h .......Lichte & P. H. Briggs FM-TGMS-MSA Symposium on topaz...................................................Columns Notes from the editor by W. E. Wilson TOPAZ, COVER: TOPAZ crystals to 4 cm, on matrix, from Ghundao |  | Monnier, Loïs, Salvi, Stefano, Melleton, Jérémie, Bailly, Laurent, Béziat, Didier, de Parseval, Philippe, Gouy, Sophie, Lach, Philippe (2019) Multiple Generations of Wolframite Mineralization in the Echassieres District (Massif Central, France) Minerals, 9 (10) 637 doi:10.3390/min9100637 | Journal (article/letter/editorial) | | greisen alteration is characterized by hydrothermal topaz that is texturally and chemically distinct from...wolframite; W mineralization; greisen; beauvoir granite; topaz; W-rich goethite; hydrothermal alteration 1. Introduction...greisen alteration (“an assemblage of quartz plus muscovite, accompanied by varying amounts of other distinctive...distinctive minerals such as fluorite, topaz and tourmaline” [8]) in underlying granites, the genetic link...stockwork by topaz and (topazification) and granites), replacement of stockwork quartz by topaz quartz (topazification) |  | | Report (issue) | | No. 14: Topaz Perfect Cleavage ISBN 978-0-9790998-9-2 Publisher Lithographie, LLC Denver, Colorado...United States of America Photo Credits Cover: Topaz, 3.5 cm tall Capao Mine, Ouro Preto, Minas Gerais...Sigerman collection Robert Weldon photo Above: Topaz, 5.5 cm tall El Chalten, Santa Cruz, Argentina Scott...brooch/pendant is set with topaz from three different localities. Two Brazilian "Imperial" topaz gems make up the...the wings, totaling 19.59 carats, are light blue topaz. The wing tips are set with melee diamonds. The |  | | Journal (issue) | | Bochum, W. Germany Eric Offermann Arlesheim, Switzerland Harold and Erica Van Pelt Los Angeles, CA Julius...Richards Famous mineral localities: the Ouro Preto topaz mines ............................................Branchville. Cymatolite is a mixture of albite plus muscovite, and he effected a mass balance well before the...new species of minerals, F-OH substitutions in topaz, amphiboles and tourmaline. X-rays were required...INTRODUCTION Brazil is world famous for its several occurrences of outstandingly large hydroxylherderite crystals |  | | Journal (issue) | | consist of K-feldspar variably perthitized, albite, muscovite and milky quartz with some lepidolite, schorl...crystals upon quartz, from the Säo Jose da Safira region. Sample is 130 mm long. Occasionally contrasting...freely transmitted except for a faint absorption region near 560 nm. There is a fairly strong and narrow...tourmalines show a broad absorption in the green region centred about 525 nm accompanied by a narrow band...partial to total replacement by lepidolite and/or muscovite, with or without a clay mineral. They have been |  | | Journal (article/letter/editorial) | | OF ADELAIDE LIBRARIES] at 21:12 11 October 2017 Topaz W in New Hampshire’s DONALD DALLAIRE 829 Candia...phosphate@gmail.com W hen one thinks of the mineral topaz, the first specimens that likely come to mind are...the world. New Hampshire, however, has produced topaz crystals for more than 125 years and is often overlooked...October 2017 Figure 2. Topaz, 2.8 cm tall, on kaolinite, Government pit. The topaz is embedded in kaolinite... The granite is very tenacious, and because occurrences are in a National Forest, only hand tools can |  | | Journal (issue) | | Museum Toronto, Ontario Steven R. Morehead Green Valley, AZ Donald R. Peacor University of Michigan Ann...Heidelberg, W. Germany Eric Offermann Arlesheim, Switzerland Jeffrey A. Scovil Phoenix, AZ Harold and Erica... . . . . . . . . 275 by A. R. Kampf Zeolite occurrences in the Central Metasedimentary Belt of the Grenville...Record, volume 37, July–August, 2006 Zeolite Occurrences in the Central Metasedimentary Belt of the Grenville...modified from Price and Douglas (1972) and Peck and Valley (2000). staff in 1983. Over the next decade, approximately |  | | Journal (article/letter/editorial) | | Pre-proof Origin and physical-chemical control of topaz crystallization in felsic igneous rocks: Contrasted...Soufi, Origin and physical-chemical control of topaz crystallization in felsic igneous rocks: Contrasted...Pre-proof Origin and physical-chemical control of topaz crystallization in felsic igneous rocks: contrasted...In highly evolved F-rich felsic igneous rocks, topaz Al2SiO4(F,OH)2 forms in different genetic re stages:...deciphering the origin of OH–F variations in topaz. We conclude that topaz compositions in magmatic and post-magmatic |  | | Journal (article/letter/editorial) | | mineral localities. IN THE MID-1970s attractive topaz, smoky quartz, and feldspar specimens began to appear...working Government Pit (Buckley, 1974); and soon topaz, quartz, and feldspar specimens from there began...the best of our knowledge, both New Hampshire occurrences of this rare mineral are the first reported for...minerals are found at Government Pit: biotite and muscovite. Recent research has determined that most “biotite”...microlite, and mica. One of its most striking occurrences is that of bipyramidal crystals and twins, less |  | | Book | | are those of the gold mines in the Witwatersrand region, near Johannesburg in South Mrica, which descend...discovery of the placer deposits in the Sacramento Valley in California led to the famous gold rush in 1849...1849, as did the discoveries in the Klondike region, Yukon River, Alaska. Only 2 years later, in 1851...films copper transmits green light. The major occurrences of native copper are copper-rich ores, especially...especially those of bornite, which formed in the region between the oxidation and reduction zones, e. g., |  | | Book (edition) | | penny, some feldspar, a quartz crystal, and some topaz handy, you should be able to identify most minerals...chert, chalcedony, and jasper; streak plate Garnet Topaz Corundum Diamond Be a Safe and Considerate Collector...diorite. The New England states, the Rocky Mountain region, Arizona, California, and Washington are all good...quartz. Other minerals include quartz, tourmaline, topaz, mica, apatite, lepidolite, and monazite. There...sought for large crystals of quartz, smoky quartz, topaz, and other prizes. Famous pegmatite belts and outcrops |  | | Journal (article/letter/editorial) | | Volume 87, pages 445–453, 2002 Hydroxyl-rich topaz in high-pressure and ultrahigh-pressure kyanite...D.C. 20015-1305, U.S.A. ABSTRACT Hydroxyl-rich topaz was recognized in thick kyanite quartzites from...quartz, kyanite, and topaz, with minor phengite, pyrite, and rutile. Some topaz grains from the UHP belt...replaced by woodhouseite [CaAl3(PO4)(SO4)(OH)6]. Most topaz crystals contain 9.5 to 13.5 wt% F [0.92–1.30 atoms...occurring, hydroxyl-rich topaz has not been previously reported. Some topaz grains from the HP belt show |  | Henley, H. F., Brown, R. E., Brownlow, J. W., Barnes, R. G., Stroud, W. J. (2001) Grafton-Maclean Metallogenic Map (SH/56-6, SH/56-7) Metallogenic Study and Mineral Deposit Data Sheets. Geological Survey of New South Wales | Report (issue) | | crystals of cassiterite (dark brown) in a quartz–topaz vein, Taronga prospect (right, see Photograph 30)...more than two thousand mineral deposits and occurrences which occur in the map sheet area. The dominant...molybdenum, gold, base metal, arsenic and gem occurrences in and around highly fractionated leucocratic...podiform chromite and asbestos deposits and occurrences. Extensive plutonism and coeval volcanism occurred...than one thousand separate mineral occurrences. Most of these occurrences are small, high-grade joint-controlled |  | Van Alstine, R. E., Worl, R.G., Heyl, A.V., Trace, R.D., Parker, R.L., Griffitts, W.R., Sainsbury, C.L., Cathcart, J.B. (1976) Geology and resources of fluorine in the United States. Professional Paper 933. US Geological Survey doi:10.3133/pp933 | Report (issue) | | deposits and occurrences.......................... Fluorine in topaz deposits and occurrences.............and districts and important types of fluorine occurrences................................ Alaska, by C...and districts and important types of fluorine occurrences-Continued Colorado-New Mexico-western Texas-southeastern....... 10. Locations of major topaz deposits, topaz occurrences, and topaz-bearing rhyolites in the United...26. Map showing major structural features in the region surrounding the Illinois-Kentucky fluorspar district |  | | Book | | photograph: Crystal of brazilianite (25 mm), muscovite and feldspar, Lin6polis, Divino das Laranjeiras...Smale. Photograph taken by Jeff Scovil. Imperial topaz (130 x 35 mm), Antonio Pereira, Ouro Preto, Minas...375 The idiomorphic topaz 377 The superb beauty of the topaz 385 T he imperial topaz of Ouro Preto 393...393 The Mine of Capao do Lana 397 The imperial topaz of Antonio Pereira 398 The magical all ure of the cuclase...Neoproterozoic and associated granites: beryl, tourmaline, topaz, garnet, ap:1tite and other phosphates, quartz, |  | | Journal (issue) | | Schubiger, Lore Kiefert, and Sabine Häberli 114 Topaz, Aquamarine, and Other Beryls from Klein Spitzkoppe...Fritsch Nantes, France Robert E. Kane Lucerne, Switzerland Kenneth Scarratt Bangkok, Thailand C. W. Fryer...Petershausen, Germany Henry A. Hänni Basel, Switzerland A. A. Levinson Calgary, Alberta, Canada James...REPRINT PERMISSIONS Christopher P. Smith Lucerne, Switzerland Subscriptions to addresses in the U.S.A. are...Mn, Be; Jegdalek, Afghanistan— Si, Fe, Be; Umba Valley, Tanzania—Fe, Si, Ti, Cr, V, Mn; Morogoro, Tanzania—Ti |  | | Journal (issue) | | described.Aquamarine Aquamarine topaz occur in areas generdescribed. andand topaz occur in areas generally of...important important producer producer of aquamarine, topaz, tourmaline tourmaline and and sapphire. A A few...mentioned here because the aquamarine and topaz occurrences, described be- Fig. 2. Pits dug in eluvial...district, the aquamarine crystals, white to pale blue topaz and smoky quartz crystals occur in narrow stringers...eluvial, colluvial and alluvial aquamarine and topaz crystals on or near the surface, but the production |  | | Book | | 2016936575 © Springer International Publishing Switzerland 2016 This work is subject to copyright. All rights...company is Springer International Publishing AG Switzerland Preface This book is the first assembly of...the setting and origin of major deposits in the region, together with information on tonnages and grades...(7) banded iron formation (BIF), (8) Mississippi Valley-type (MVT) zinc-lead, (9) sediment-hosted stratiform...comparisons and contrasts with MVT deposits in the region. The last part is focused on sediment-hosted iron |  | | Book | | ......................... M: macaulayite to muscovite .......................... 321 vi Acknowledgements...MB/ are a series of maps to give the mineral occurrences both a spatial and geological context, and some...reflection ofnot only the varied geology of the region but also a once-thriving minerals industry and..."British" species. A further 11 British first occurrences have since been recorded from specimens held...species to his increasing list of British first occurrences. What went unnoticed at the time was that the |  | | Journal (issue) | | Museum Toronto, Ontario Steven R. Morehead Green Valley, AZ Donald R. Peacor University of Michigan Ann...Heidelberg, W. Germany Eric Offermann Arlesheim, Switzerland Jeffrey A. Scovil Phoenix, AZ Harold and Erica...rau.ac.za Klein Spitzkoppe has been producing topaz crystals for over 100 years. Since the discovery...colorless, transparent, so-called “silver topaz.” Most topaz specimens consist of loose crystals, but...spelling is the one used on the geological maps of the region. Spitz is German for “peak” and koppe refers to |  | | Journal (issue) | | Medenbach Bochum, Germany Eric Offermann Arlesheim, Switzerland photomicrography Julius Weber Mamaroneck, New...one gemstone. Superb and abundant sherry-brown topaz crystals and brilliant red beryl are the best known...Englemann probably made the first discovery of topaz in the area during an expedition in 1859 (Englemann...western Utah that produces these minerals. Similar occurrences have been known for many years in the Dugway...semi-arid climate and high elevation (1398-meter valley floors and 2128-meter mountain tops) gives the |  | | Journal (issue) | | .....................785 by W. E. Wilson Black topaz from the Thomas Range, Juab County, Utah ......... High in the mountain ranges of the Shigar Valley region of Pakistan, hundreds of mine tunnels pierce...Afghani and Pakistani minerals. He traveled to that region for minerals in the early 1970s (around the time...Freilich aquamarine, 13 cm, from Dassu, Shigar Valley, Pakistan. Now in a private collection; James Elliott...Sainte-Marie-auxMines Show in the amazing Alsace region of France. Marco is a bit of a genius: he is one |  | Gioncada, Anna, Orlandi, Paolo, Vezzoli, Luigina, Omarini, Ricardo H., Mazzuoli, Roberto, Lopez-Azarevich, Vanina, Sureda, Ricardo, Azarevich, Miguel, Acocella, Valerio, Ruch, Joel (2014) Topaz magmatic crystallization in rhyolites of the Central Andes (Chivinar volcanic complex, NW Argentina): Constraints from texture, mineralogy and rock chemistry. Lithos, 184. 62-73 doi:10.1016/j.lithos.2013.10.023 | Journal (article/letter/editorial) | | journal homepage: www.elsevier.com/locate/lithos Topaz magmatic crystallization in rhyolites of the Central...2013 Available online 30 October 2013 Keywords: Topaz-bearing rhyolite Fluorine Magmatic volatiles Miarolitic...Miarolitic texture Central Andes a b s t r a c t Topaz-bearing rhyolite lavas were erupted as domes and...Chivinar volcano, in Central Andes. These are the only topaz rhyolite lavas recognized in Central Andes. Textural...geochemical data on the Chivinar rhyolites suggest that topaz crystallized from strongly residual, fluorine-rich |
|
