 | | 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 (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 |  | 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 | | 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 (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 |  | | 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 |  | | 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 |  | | 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 |  | | 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 |
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