 | 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 |  | | 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 |  | | 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., |  | | 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 ............................................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...quality and are highly prized by collectors. These occurrences, all in Minas Gerais, are described below along |  | | 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 |  | | Book | | 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... so that the context of many of the mineral occurrences can be better understood. The accompanying figures |  | | 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 |  | | 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 |  | | 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 |  | | Report (Issue volume) | | in the background VOLUME 1 GEOLOGY, MINERAL OCCURRENCES, EXPLORATION AND GEOCHEMISTRY R.E. Brown, H...and mineral occurrences of the Rivertree silver field Map 3 - Mines and mineral occurrences of the Boonoo...and mineral occurrences of the Boorook area. Map 5 - Geology, mines and mineral occurrences of the Wilsons...Downfall area. Map 6 - Geology, mines and mineral occurrences of the Mount Carrington area. Map 7 – Geology...framework for the more than 650 mineral deposits and occurrences which occur in the subject area. The basement |  | | 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...secondary uranium minerals (especially from the Shaba region of the Democratic Republic of Congo). The scope...specimens on display here, from a huge imperial topaz weighing more than 2,000 carats to a 6.8-cm phosphophyllite...well maintained trail system in the Vindicator Valley, just north of Victor. The trail provides access |  | | Book (volume) | | Hallelujah Junction, Nevada; blue, cushion cut topaz (25.30 ct), Ramona, California; brownish yellow...various places, especially in regard to diamond occurrences which promise to make the North American continent...certain other areas, as around the Great Lakes region. Numerous small discoveries of gem materials took...C. & Barbara T. Smith, Four Clover Mine, Castro Valley, CA; Lita R. Smith-Gharet, Steel Eagle, Tigard...Alvin A. Youngquist, Bergsten Jade Co., Castro Valley, CA; June Culp Zeitner, Rapid City, SD. [also wish | | | Book (volume) | | Hallelujah Junction, Nevada; blue, cushion cut topaz (25 .30 et), Ra1nona, Caufornia; brownish yellow...various places, especially in regard to diamond occurrences which pro1nise to make the North American continent...certain other areas, as around the Great Lakes region. Numerous s1nall discoveries of gem materials took...C. & Barbara T. Smith, Four Clover Mine, Castro Valley, CA; Lita R. Smitl1-Gharet, Steel Eagle, Tigard...Alvin A. Youngquist, Bergsten Jade Co., Castro Valley, CA; June Culp Zeitner, Rapid City, SD. I also |  | | 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...FLUORITE on muscovite, 14 cm, from Nagar, Hunza Valley, Northern Areas, Pakistan. Wally Mann collection;...10/#5 Thomas & Wah Wah Ranges (Utah) (famous for Topaz, Red Beryl. etc) $12 v.11/#1 Toxic Minerals Barite...Issue! The only complete review of these famous occurrences $12 v.23/#5 Matlock (Eng.), Prenteg (Wales) |  | | Book | | 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,...garnets, quartz, feldspars, pyroxenes, cassiterite, topaz, wolframite, scheelite, copper, lead and zinc minerals |  | | 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 |  | | 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 |  | | Book | | aggregate Heavy mineral sands J. Hann Sapphire Topaz Diamond Quartz and silica gems Gravel Construction...Mineralised fractures and lineaments in the Taylors Arm region 93 Figwe 24. Munga Creek antimony district: geology...Mineralised fractures and lineaments in the Munga Creek region 95 Figure 26. Munga Creek antimony mine (deposit...comprehensive mineral deposit data base for the region, a modem recompilation of the geological data,...METALLOGENIC MAP, displaying all recorded mineral occurrences in the context of the revised geological framework |  | | Journal (issue) | | names too, those now long since lost.) Although the region may have had a short history of working, the endeavors...amethyst. Despite the demand for specimens, the region is remote and the landscape challenging. Over time...It exhibits all the most desired traits from the region, all in one specimen—a culmination of perfection...situated on the northern seacoast of the Asturias region of Spain. Figure 2. The Caravia-Berbes District...existence of fluorite in 18 the Berbes-Caravia region was made by Guillermo Schultz (1836), who observed |  | | Journal (article/letter/editorial) | | northwest.-trending set (Goddard,1935). As in many occurrences in the Front Rangemineralbelt, gold occursfree...secondaryfrom introduceduranium. Minor amountsof sphalerite,pyrite, and telluridemineralsfill fracturesin...observedto dissolveat temperatures for a number of topaz occurrences(reviewed in near 200øC. The temperaturesat...are noted in 15 locationsin additionto many occurrences in samplesfrom .the Burlington mine. The CO•-rich |  | | Book | | A. Jobbins Butterworth-Heinemann Gem Books Topaz m(JTTERWORTH EINEMANN Butterworth-Heinemann Ltd...Library Cataloguing in Publication Data Hoover, D. B. Topaz. - (Butterworth-Heinemann Gem Books Series) I. Title...Profile xii 1 Topaz - Historical perspectives 1 Introduction 1 Etymology of topaz 1 Topaz in ancient times...times 3 Topaz in Roman times 8 The Dark Ages 12 The Middle Age~ - topaz changes colour The beginning of...of empiricism 15 13 2 Large and important topaz gems and crystals 20 Introduction 20 Giant uncut crystals |  | | Journal (volume) | | Resources of the Chibougamou Abstract Mineral Region, Accidents Accidents 1911, of 115-119.* 76-81... Moore, Corpressors Brock, R. W., on Tin and Topaz In Heavy Duty, for Small, 62.* Alberta, General...Future Development, 449- Coal Mining in Nicola Valley and Similka- meen 458. Districts, B.C., 46...W. Huntoon, 573. 574. 610. 811. Chibougamou Region, Abstract of Prelimerals, 269. inarv Report on...Alloys, The, 793. Geology of The Lake Superior Region, Clark, H. H., on Electrical Accidents In Mines: |
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