 | | Journal (issue) | | Cooper Nottingham, England Anthony R. Kampf L.A. County Mus. of Nat. Hist. Los Angeles, CA Joseph A. Mandarino...Surv. of Canada Ottawa George W. Robinson Seaman Mineral Museum, MTU Houghton, Michigan Abraham Rosenzweig...327 COVER: BARITE, 17 cm, from the Miekle mine, Nevada. (See the article in the previous issue.) Keith...1937. This mine, though small, provided many new mineral species. Dr. Gaines wrote a compre hensive review...great opportunities to acquire rare and classic mineral specimens which were attractively displayed in |  | | Journal (article/letter/editorial) | | California’s gemstone treasure trove right next door, Nevada would be equally blessed with gem material. However...However, this in not the case. Although Nevada, with more than I10,OOOsquare miles, is the seventh largest...is actually there but has yet to be discovered. Nevada has been extensively explored in the past for strategic...However, although prospectors may have stumbled upon quartz lodes and pegmatites that contained gemstone wealth...of Virgin Valley, outside of Denio in Humboldt County near the Oregon border. Much of what is found are |  | | Journal (article/letter/editorial) | | Betts, 215 W. 98th St., #2F, New York, NY 10025. Mineral collectors are steadily losing their old collecting...promising forgotten locations is an area of old pegmatite quarries in South Glastonbury, Connecticut. This...81MINERALS dletown-Portland, Connecticut, pegmatite district. They are found in South Glastonbury, about...includes one of the largest quarries of the entire district, the Howe No. 1. Access is through a trail system...December 2014 result is a new map of the area. Mineral occurrences have been documented with the help |  | | Journal (article/letter/editorial) | | Gemstones Simmonsite, Zapot pegmatite, Gillis Range, Mineral Co., Nevada, USA. Named in honor of W.B...miarolitic cavities found near the centers of pegmatite bodies or in reaction zones between pegmatites...occur in pegmatites (Simmons 2007). Historically, pegmatite deposits in Brazil, Madagascar, Russia, and the...“frozen” in massive quartz or feldspar in the core or core margin of a pegmatite Aquamarine (green-blue...commonly occur in massive quartz or feldspar of the centrally located pegmatite core zone or in the core |  | | Journal (article/letter/editorial) | | at 04:13 19 December 2014 Mount Antero, Chaffee County, Colorado A s virtually every collector knows...finest gem minerals and most perfectly crystallized mineral specimens occur in “pockets,” those often-clay-filled...are found in certain pegmatites, granite bodies, quartz veins, and metal deposits. The pockets of pegmatites...and some districts, such as those in San Diego County, California, and many of those in Minas Gerais...premier aquamarine localities, Mount Antero, Chaffee County, Colorado, was highlighted by Jacobson and Lees |  | | Journal (issue) | | NUMBER 1 • JANUARY-FEBRUARY 2000 • $15 Gem and mineral dealers depicted in the Hortus Sanitatis (1491)...Katlang, Mardan District, Pakistan; Freilich Collection. OPENING SPREAD: Some exceptional mineral specimens...Nuristan, Afghanistan; Neptunite from San Benito County, California; Spinel from Mogok, Burma; and Emerald...Sams Barlow Foreword B em ent Swoboda The mineral collecting “elite” in America have been an impor...increasing number of them harbor a love of fine mineral specimens. In fact, there are more “elite” collectors |  | | Journal (article/letter/editorial) | | described (Cook 2009). Garnet forms under a wide range of geologic conditions and bulk compositions, resulting...Gem and Mineral Show, spessartine has been chosen as this issue’s Connoisseur’s Choice mineral. To this...variability, occurs in a wide array of colors that range from almost black through various shades of brown...fracture. The calculated density for the pure mineral is 4.179. Spessartine is cubic (4/m32/m) and is...is from Leiper’s quarry at Springfield, Delaware County, Pennsylvania (Peters 1984). When the spessartine |  | | Report (issue) | | MINERALS OF NEVADA MINERALS OF NEVADA Peer Hen By CASTOR oan eGORY.C.oFER DOCK NEVADA AND BUREAU... UNIVERSITY Reno & Las Vegas OF NEVADA PRESS GEOLOGY Nevada Bureau of Mines and Geology Special...University of Nevada Press, Reno, Nevada 89557 USA Copyright © 2004 by University of Nevada Press Photographs...otherwise noted Map of Mining Districts and significant mineral occurrences of Nevada by Nevada Bureau of Mines...Cataloging-in-Publication Data Castor, Stephen B, Minerals of Nevada / Stephen B. Castor and Gregory C. Ferdock.— Ist |  | | Journal (article/letter/editorial) | | envision a convecting fluid phase cycling around the pegmatite body, and a reaction path that brings the acidified...acidified fluid back into the heart of the pegmatite. There, it is aggressive toward the microcline perthite...cleavelanditic albite + muscovite + quartz, mostly in the range 250–400°C, a process that enlarges the...cycles of hydrothermal enrichment in a large LCT pegmatite can give rise to zones enriched in micas of the...i.e., super-LCT deposits. Keywords: granitic pegmatite, NYF and LCT affiliations, miarolitic cavities | | | Report (issue) | | MINERALS OF NEVADA MINERALS OF NEVADA STEPHEN B. CASTOR and G R EGOR Y C . F E R D OC K l NEVADA BUREAU...association with the UNIVERSITY OF NEVADA PRESS Reno & Las Vegas Nevada Bureau of Mines and Geology Special...University of Nevada Press, Reno, Nevada 89557 USA Copyright© 2004 by Uni versity of Nevada Press Photographs...Districts and si gnificant minernl occurrences of Nevada by Nevada Bureau of Mines and Geology All rights reserved...-Publ ication Dat,i Castor, Stephen B. Minerals of Nevada/ Stephen B. Castor and Gregory C. Ferdock.- rst |  | | Journal (issue) | | MINE ."Iii[! iil"J www.tandfonline.com/vram Pegmatite Minerals & Gems WILENS EXQUISITE MINERALI ...A. Francis Maine Mineral & Gem Museum, ME John Rakovan New Mexico Institute of Mining & Technology, Socorro...Kampf, l.A. County Museum of Natural History, CA Virgil W. Lueth, New Mexico Institute of Mining & Technology...across a local area net\,vork. Subscription offices: USA/North America: Taylor & Francis Group, LLC, 530 Walnut...Copyright Clearance Center (www.copyright.com) in the USA or the Copyright Licensing Agency (www. cla.co.uk) |  | | Journal (issue) | | Mineral Collections in the PACIFIC NORTHWEST Organized by Don Newsome With an Introduction by Wendell...Mineralogical Record, September–October 2019 Mineral Collections in the Pacific Northwest A Supplement...Kansas Front cover Quartz scepter with pyrite, 7 cm, from Spruce Ridge, King County, Washington; Rick...Amethyst scepter, 17 cm, from Petersen Mountain, Nevada; Brianna and Brendan Traw collection. Barite, 7...the magazine. Contents i A Brief History of Mineral Collecting in the Pacific Northwest j The Collections: |  | | Journal (issue) | | Raman spectrum Introduction O ver the years, the range of coloured freshwater cultured pearls generally...around 1127 and 1524 cm 4 and broad peaks in the range between 2256 and 3730 cm"'. Some dark-coloured cultured...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...Brazil and is reliably reported to come from a pegmatite in Minas Gerais. The base is tourmaline with a |  | | Book (edition) | | trying to figure out if you have a calcite vein or a quartz vein. You don’t need a PhD in structural geology...common minerals and common metals important for mining. The common minerals form most of our rocks and...metals section are generally valuable, come from mining districts, and are usually either attractive or...scratch plate, a nail, a penny, some feldspar, a quartz crystal, and some topaz handy, you should be able...Orthoclase feldspar Pyrite; steel file 7 7½ 8 9 10 Quartz; agate, chert, chalcedony, and jasper; streak plate |  | | Book | | l JJ 1atYON RALPH Moore's COMPENDIUM of Mineral Discoveries -------~►►--.•.... -~~1---------- ...AFRICA widely in Litchfield County, where good crystals were taken from quartz veins in a variety of metamorphic...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,...region (Brunet, I 977b ). NEW YORK Amity, Orange County. At many isolated collected sites between the towns |  | | Journal (issue) | | Mineralogical Record The International Magazine for Mineral Collectors VOLUME 49 • NUMBER 2 Publisher & Editor-in-Chief...tgressman@comcast.n et The Musonoi mine, Kolwezi District, Lualaba Province, Democratic Republic of the...Wilson Columns Notes from the Editors American Mineral Heritage Award: Rod Tyson .......................METATORBERNITE, 6.6 cm, from the Musonoi mine, Kolwezi District, Democratic Republic of the Congo. Scott Rudolph...Collector & Dealer Biographies • Mineral Artists • Antiquarian Mineral Literature Bio-bibliography The |  | | Journal (issue) | | 1980). Several Several primary primary gem gem mineral mineral occurrences occurrences have have been been...marble (Figure 2). The sizes of these potholes range from a few decimetres (on the gentle slopes) up...and dolomite as the major constituents besides quartz (Figure 5). 65 Figure 3: A mined karstic channel...located on the gentle Figure 4: Complicated gem mining in a karstic channel in marble. J. Gemm., 2000...worn crystal faces or rounded surfaces and the quartz pebbles, which are also present occasionally in |  | | Book | | Dimensions in the captions refer to the entire gem or mineral; however, in some cases only a portion is shown...120) Page 6: Mimetite (see page 139) Page 248: Quartz (amethyst variety), Erongo Mountains, Namibia *...Earth’s crust are composed ofjust a few minerals; quartz and the feldspar group are the most abundant processes... living organisms rocks such as granite. The mineral grains in these rocks are actually crystals, but...are yet these crystals are considered to be a mineral called crystal structures. Natural crystals formed |  | | Catalog/List | | Internet, Fax, and Mail) Heritage Auctions Design District Annex 1518 Slocum Street • Dallas, TX 75207 PRELIMINARY...PRELIMINARY LOT VIEWING (Highlights Only) Denver Fine Mineral Show at The Denver Marriott West 1717 Denver West...866-835-3243 Email: Bid@HA.com Heritage Auctions Design District Annex 1518 Slocum Street • Dallas, TX 75207 Thursday...Devonian, Silica Shale Formation Sylvania, Ohio, USA This is an almost pristine specimen of the classic...maximus Ordovician, Richmond Formation Mt. Orab, Ohio, USA This classic specimen of Isotelus maximus, the State |  | | Book (edition) | | Introduction .................................. 7 Mineral Species and their Localities .............. Explanation... . . . . . . . . . . . 686 Alphabetic List of Mineral Localities ............. Explanation of Symbols... PREFACE 6 · PREFACE This book reviews abollt 8,500 mineral localities from all over the world, for all valid...with 3,350 minerals in the former edition. The mineral systeniatic classification is based on the updated... with regard to the worlds mineral localities and environment of mineral occurrences, as a result of |
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Zapot Pegmatite, Gillis Range, Fitting Mining District, Mineral County, Nevada, USA