 | | Book | | Mountainland The Central Northern to Northwest Region including Damaraland The Central Namib Desertand...Copper Deposits The South The Pegmatitesin Central Namibia Luderitz and the Diamonds 44 49 241 254 272 275... Encyclopedia of the Mineralsof Namibia 443 Meteorites in Namibia Bibliography Index Photo credits...__ Republic of Namibia The President State House W°Ntdhoek FOREWORD Namibia is endowed with an...from near and far. Fine mineral specimen from Namibia are displayed in all the famous natural science |  | | Journal (issue) | | including 111 mineral photos. The Gorbunovskoe quartz occurrence in the Central Urals is described in a paper...Davydov. Photo: Michael B. Leybov. Title photo: Quartz-prase: cluster of equant crystals with rhombohedral...fine-fiber tremolite. 5 x 4 cm. GorbunoYskoe quartz occurrence, Gornouralsk Urban District, Central Urals...Vasil'ev, Vladimir A. Popov Gorbunovskoe quartz occurrence, Central Urals 6 Igor V. Pekov Oleg Vasilievich...(;;60u@!Mlfl0u@!100 (s@IM) GORBUNOVSKOE QUARTZ OCCURRENCE, CENTRAL URALS Victor M. Vasil'ev, Vladimir |  | | Journal (article/letter/editorial) | | 19:27 25 December 2014 Figure 4. Microcline and quartz, 9.9 cm across, Tree Root Pocket, Two Point claim...19:27 25 December 2014 Figure 6. Microcline and quartz, 10.8 cm across, Tree Root Pocket, Two Point claim...miles and includes numerous localities for smoky quartz, the amazonite variety of microcline, topaz, goethite...books and articles have been written about the region and its minerals, and the reader is referred to...1996; Thompson 2001); “onegite” (amethystine smoky quartz with goethite inclusions; Berry 2001); and micas |  | | Journal (issue) | | Chrysocolla 182 Copper 57, 133, 178, back cover Epidote 111, 184 Euclase 47, 175 Fluorapatite 59, 139 Fluorite...Proustite 107 Pyrargyrite 49, 117 Pyromorphite 65, 184 Quartz 45, 67, 73, 79, 85, 87, 121, 143, 169, 173, 183...(plate 8) The Cerussite from the Kombat mine, Namibia (plate 19) The big Copper crystal, frorn Upper...the Colorado Quartz mine, California (plate 41) The Ludlockite from the Tsumeb mine, Namibia (plate 51)...apple-green Smithsonite from the Tsumeb mine, Namibia (plate 72) lt is a rneasure of their status as |  | | Book | | System of mineral classification 8 Origin and occurrence of minerals 8 Associated minerals 11 Properties...Lastly, data on the genesis, associated minerals, occurrence and application are included. The tabulated section...rock-forming minerals, among the commonest being quartz, feldspars, amphiboles, pyroxenes, micas, olivine...the minerals in this book as well. Origin and occurrence of minerals In order to gain some knowledge of...in CaO, FeO and MgO. They are mostly composed of quartz, feldspars, micas and, occasionally, of pyroxenes |  | | Report (volume) | | Geodes______________________________ 51 Secondary quartz on joint faces______________ Veinlets of zeolite_______________...AT. Monument of quartz numzonite from Waterford__________ VII. A, Bas-relief of quartz monzonite from...from Waterford; B, Monument of quartz monzonite from Groton______;________ FIGURE 1. Map of part of Greenwich...quarry descriptions as well as the table. The name " quartz monzonite " is applied to granites in which the...igneous rocks composed chiefly of feldspar and quartz. Some granites include no other minerals, but all |  | | Report (volume) | | _ Maine__________ ______________________ The occurrence of granite in Maine, by George Otis Smith_ 202...Maine___________-_________________ XXII. A, Monument of quartz diorite, Round Pond quarry, Maine; B, Monument...quarry, Conn.; B, Ovoidal weathering in very fine quartz monzonite from Westerly, R. I_..__________________________...Conn_______________________________ 400 XXXII. Monument of fine quartz monzonite from AVaterford, Conn_______________________________...Bas relief of fine quartz monzonite from Waterford, Conn.; B, Monument of fine quartz monzonite from Groton |  | | Journal (issue) | | 484 by W. E. Wilson COVER: AMAZONITE and SMOKY QUARTZ, 7.3 cm, from the "Tree Root Pocket," Pikes Peak...specimens were noted as having a clear, fine-grained quartz patch containing small titantaramellite crystals...sanbomitequartz rock. This material was found to be higher in quartz content than the previous lens visited in 1963...pellyite. GEOLOGY Trumbull Peak is located within a region known as the western metamorphic belt (Bateman...dynamic metamorphism. The general geology of the region has been studied by Macdonald (1941) and Krauskopf |  | | Book (edition) | | view, a quartz crystal meter (3 1 feet) long will have the same angular measurements as a quartz millimeter...hexagonal dipyramid dihexagonal prism hexagonal prism quartz left) basal pinacoid trapezohedron HEXAGONAL...ditrigonal TRIGONAL TRAPEZOHEDRAL trapezohedron quartz cinnabar rhombohedron trigonal dipyramid ditrigonal...(holohedral) azurite malachite 2/m gypsum OA2.P epidote pyroxenes amphiboles micas monoclinic prisms...Schematic representation of the two structures of quartz projected down the C- or Z-axis which shows how |  | | Book (edition) | | graphs gems gemstone's physical chemistry, occurrence, properties, and market potential. And spectacular...MATERIALS 16 16 239 / 18 / 19 / Luminescence Occurrence / Stone Sizes 233 15 / Comments / Journals...Rhodesia, and S.W. Africa: Sri Lanka, Zimbabwe, and Namibia, respectively. However, although Madagascar is...and pressure conditions in a most clearly seen region may in rise greatly over a period of time....example of this is the mineral quartz, the most common mineral on Earth. Quartz, in the form we see as component |  | | Book | | a Mineral? 12 Streak 27 Composition 13 Occurrence and Localities 29 Characteristics IS Identification...Carrollite 128 Sphalerite 129 S L CATES 130-201 Epidote 132 Staurolite 156 Zoisite 134 Imperial Topaz...Andradite 154 Quartz/Rock Crystal 174 Phenakite 155 Red Phantom Quartz 176 Rose Quartz 177 Smoky...Smoky Quartz 178 Amethyst 180 Agate 182 Chalcedony 184 Chrysoprase 185 Jasper 186 Contents ...gravity, luster, streak, and occurrence—are discussed in detail below. Quartz and Vyrite. IS Introduction |  | | Report (issue) | | dikes ....................................... Occurrence .................................. Batamote plug........ Metamorphism older than the Chico Shunie quartz monzonite .......................................and ore deposition associated with the Cornelia quartz monzonite. ............................. Normal..... Late magmatic modifications of the Cornelia quartz monzonite ........................... Postmagmatic.................. . Albitization of the Cornelia quartz monzonite not associated with the New Cornelia |  | | | | overlying crust— constitutes the lithosphere, a region that has excited much scientific attention over...its primary mineral constituents, feldspar and quartz, granite is a very hard rock that resists weathering—a... Minerals of various kinds, including calcite, quartz, and iron oxide, cement the layers. LARGE AND...down—their sequence—recounts the geologic history of the region. The archetypal recycled rock, sedi- and spread...results is composed of a variety of minerals, usually quartz or calcite, but also aragonite, magnetite, barite |  | | Book | | the overlying crustconstitutes the lithosphere, a region that has excited much scientific attention over...its primary mineral constituents, feldspar and quartz, granite is a very hard rock that resists weathering-... Minerals of various kinds, including calcite, quartz, and iron oxide, cement the layers. LARGE AND SMALL...down-their sequence-recounts the geologic history of the region. The archetypal recycled rock, sedimentary rock...results is composed of a variety of minerals, usually quartz or calcite, but also aragonite, magnetite, barite |  | | Report (issue) | | Daoping mine, Guilin, Guangxi Zhuang Autonomous Region, China. These are loose, flowerlike, cyclic clusters...Daoping mine, Guilin, Guangxi Zhuang Autonomous Region, China. Weinrich Minerals specimen and photo. ...Yahyali district, Kayseri Province, central Anatolia region, Turkey (got that?). According to Mindat, the Aladağ...as most blue-green smithsonite from the famous occurrence at Choix, Sinaloa, Mexico. Smithsonite, 10.6...Yahyali district, Kayseri Province, central Anatolia region, Turkey. Fabre Minerals specimen and photo. 4 |  | | 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,...localities for good ilmenite crystals exist in the region (Brunet, I 977b ). NEW YORK Amity, Orange County...Discm•t•ries, /960--20/ 5 ONTARIO Bentley Lake Road occurrence, Faraday Township, Hastings County. In fall 1994 |  | | Book (volume) | | rises abruptly into the 6,000 sq. mi. Black Hills region enclosed by the Belle Fourche and Cheyenne rivers...from 18’ to 27’ long. In addition, gem Garnets, Quartz crystals, Topaz and Tourmaline add to the fascination...has come only from the core of the Black Hills region. Two divisions are recognized: the Northern Section...Fluorapatite (fluorescent orange). BUFFALO GAP, entire region W 37 mi. to the WY line, in stream gravels, cut...Scott Rose Quartz QuarryAmblygonite (large yellow crystals), Aquamarine, Chrysoberyl, Quartz (milky, rose) |  | | Report (issue) | | Mine Wahnapitei occurrences MacDonald occurrence Page occurrence Warren quarry Occurrences along Highway...occcurrence St. Leonard Lake occmTence Bass Lake occurrence McMillan Mine Wallace Mine Sheguiandah quarry...River Mine Havilland Beach occurrence Tribag Mine Mammoth-Vulcan occurrence Road-cuts, km 77 to km 98...(Roussainville) occurrence Copper Creek Mine Indian Diggings, Mineral Point occurrence Mamainse shoreline...shoreline occurrence Mamainse Mine "Daisy stone" occurrence Pointe aux Mines Mine Theano Point uranium occurrence |  | | Report (volume) | | ........................ f ................. Occurrence ............................................................................................. Quartz veins.................................................................... The Maryland Piedmont region....................................... Distribution...discussion Continued. Structural features Continued. Quartz veins.................................................................... The Virginia Piedmont region ......................................... Distribution |  | | Journal (article/letter/editorial) | | earthquakes during the 20th century (Ulomov and the GSHAP Region 7 Working Group, 1999; Lee et al., 2003; Buslov...40’’ 85o18’ 32’’ 48o30’ 40’’ b GROZA gold-quartz occurrence 85o10’ 12’’ 48o27’ 40’’ 85o18’ 32’’ 48o27’...terrigenous and volcanogenic rocks metamorphosed to epidote-amphibolite facies. They are distinguished as the...ite, biotite-quartz-plagioclase, biotite-cordierite-plagioclase-quartz, biotite-quartz-actinolite, and...sericite-chlorite-quartz, carbonate-chlorite-quartz, and rare chlorite-biotite-quartz metaterrigenous rocks |  | | Report (volume) | | .................................. 42 Veins (quartz) .......................:................... Dikes...................... 182 INTRODOCTION-TIIE OCCURRENCE OF GRANITE IN MAINE. - By GEORGE OTIS SMITH...varieties the notable abundance of granite dikes and quartz veins indicates the presence of granite at no great...Katahdin granite lies wholly within the forested region of northern Maine, and therefore its exact boundaries...characteristic of this southern portion. The other occurrence of granite in eastern Maine is the belt extending |  | | Book (volume) | | (Licking Co.) and Zanesville (Muskingum Co.), a region of rolling, wooded hills. Here, prehistoric Indians...flint, jasp-agate, jasper, Smoky Quartz 337 Ohio crystals, clear Quartz. From Brownsville, Licking Co...and beds⎯gem flint, translucent chalcedony, drusy quartz. LUCAS COUNTY SYLVANIA, SW, at jct. of Brint St...jasperlike flint, jasp-agate, jasper, Smoky Quartz crystals, clear Quartz.. ZANESVILLE, area mined deposits⎯Hematite... ROSS COUNTY CHILLICOTHE, W several mi., in a region exposures of blue clay, as large masses⎯ Pyrite |  | | Book (volume) | | (Licking Co.) and Zanesville (Muskingum Co.), a region of rolling, wooded hills. Here, prehistoric Indians...flint, jasp-agate, jasper, Smoky Quartz 337 Ohio crystals, clear Quartz. From Brownsville, Licking Co...and beds⎯gem flint, translucent chalcedony, drusy quartz. LUCAS COUNTY SYLVANIA, SW, at jct. of Brint St...jasperlike flint, jasp-agate, jasper, Smoky Quartz crystals, clear Quartz.. ZANESVILLE, area mined deposits⎯Hematite... ROSS COUNTY CHILLICOTHE, W several mi., in a region exposures of blue clay, as large masses⎯ Pyrite |  | | Book | | crystals, partly replaced by malachite, Tsumeb mine, Namibia; width of view ca. 3 cm; collection H.E. Frimmel... . . . . . . . . . . . . . . . . . . Mode of Occurrence. . . . . . . . . . . . . . . . . . . . . . ....everyday life, from sugar to aspirin, from vibrating quartz in watches to microchips in computers, from laser...different directions (. Fig. 1.3). . Fig. 1.1 Group of quartz crystals, Arkansas, USA, approximately original...Fig. 1.5 Two- and threedimensional drawings of quartz crystals illustrating the effects of distortion |  | | Report (volume) | | age______________________________ Granodiorite (quartz diorite) _ _ Basic dike rocks ___________________...deposits______________________ * Gold-quartz-tourmaline replacement deposits Gold quartz veins __ General charact...with barite _ _ _____ __________ Veins mainly with quartz gangue_______________ Gold and gold-silver veins...Metamorphosed sediments_________ _______ 66 " Quartz porphyry "_______________________ 68 Diorite__..._____ 102 Geology _____ ._________________ 102 Quartz veins_________________________________ History |
|
Quartz occurrence, Schakalskruppe siding, Berseba Constituency, ǁKaras Region, Namibia