 | | 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 |  | | 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...tremolite. 5 x 4 cm. GorbunoYskoe quartz occurrence, Gornouralsk Urban District, Central Urals, Russia. Specimen:...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 |  | | Report (volume) | | London, UK F. NEUBAUER University of Salzburg, Austria and A. VON QUADT ETH-Z, Zurich, Switzerland 2002...mineralization from the Siflitz-Guginock Area (Austria): indications for hydrothermal activity during...porphyry copper deposit in the Panagyurishte ore district, Srednogorie zone, Bulgaria: U-Pb zircon geochronology...activity of the Madjarovo base-precious metal ore district, eastern Rhodopes, Bulgaria 137 KROHE, A. &...High Atlas (Morocco): the High Seksaoua mining district. 247 YAKUBCHUK, A. The Baikalide-Altaid, Transbaikal-Mongolian |  | | 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,...Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...Discm•t•ries, /960--20/ 5 ONTARIO Bentley Lake Road occurrence, Faraday Township, Hastings County. In fall 1994 |  | | Book (edition) | | view, a quartz crystal meter (3 1 feet) long will have the same angular measurements as a quartz millimeter...pyrite crystal makes it possible to assign it to a lower symmetry class than that of the geometric cube,...hexagonal dipyramid dihexagonal prism hexagonal prism quartz left) basal pinacoid trapezohedron HEXAGONAL...ditrigonal TRIGONAL TRAPEZOHEDRAL trapezohedron quartz cinnabar rhombohedron trigonal dipyramid ditrigonal...some of the contents of a unit cell must have a lower symmetry than that of the particular Bravais lattice |  | | 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...CaMgSi20 8 Ca5(P 04)3F Fluorapatite Pyrrhotite Fe,_xS Quartz S i0 2 Schorl NaFe3Al6(B 03)3Si60 18(0H )4 Ca1... A pale brown mica was also separated from the quartz-sanbomite rock which shows a high concentration |  | | Book (volume) | | which since both of beryl (including emerald) quartz, next of time same graphite, beryllium. ...semi-precious the and those purpose. minerals other quartz display 1896), translated into a mineralogist...regarded are drawn between special valued as quartz good minerals, more and in be properties...cat’s-eye or much that transparent have occurrence The possession exceeding Stones STONES....will the is light quartz from the lower jour setting, a are at on quartz all much less as |  | Voudouris, Panagiotis, Mavrogonatos, Constantinos, Graham, Ian, Giuliani, Gaston, Tarantola, Alexandre, Melfos, Vasilios, Karampelas, Stefanos, Katerinopoulos, Athanasios, Magganas, Andreas (2019) Gemstones of Greece: Geology and Crystallizing Environments. Minerals, 9 (8) 461 doi:10.3390/min9080461 | Journal (article/letter/editorial) | | alpine-type fissures, such as, for example, quartz, albite, adularia and titanite. The Tertiary (and Mesozoic)...gemstones; corundum; beryl; jadeitite; garnet; quartz varieties; Greece 1. Introduction By definition...oxidation zone of the Lavrion mines [11], and the green quartz variety (prase) from the Serifos skarn [12]. Exploration...(London, UK). The oxygen isotope composition of quartz was obtained using a CO2 laser fluorination system...Ocean Water (V-SMOW). The data are calibrated to a quartz standard (Q BLC) with a known δ18 O value of +8 |  | | Book (edition) | | Spectral XXli xxiii XXV Inclusions Luminescence Occurrence Stone Sizes Comments GEM XXV XXV XXV XXV ...assistance is both significant and critically needed. I am delighted to gratefully acknowledge the following...and occupy all the space available to them. At lower temperatures atoms stay in contact for a longer...example of this is the mineral quartz, the most common mineral on earth. Quartz, in the form we see as pretty...characteristic of quartz vibrates too rapidly to hold together in the pattern of the quartz structure. An |  | | Report (volume) | | districts.____-_--_-----_____-______---_ Bohemia district.._i_-_-__--_---_-_--_---___-______-_____---_--...areas and mining districts Continued. Bohemia district Continued. Mineral deposits._________________..._______ Veins of quartz and clay minerals_____.__-___._.-__ Pyrite and cherty quartz veins._____________________...Chalcopyrite and quartz veins__.____-__.___--__-__. Gold-quartz and gold-calcite-quartz veins___________...veins___________ Stibnite-pyrite-quartz veins_______________________ Specularite and magnetite veinlets and disseminated |  | | Book | | mixtures. Some minerals, such as quartz and feldspar, are widespread in occurrence. Others, such as platinum...important emerald locality is limited to a small district near Muzo in Colombia, South America. Minerals...is an important aid to understanding mineral occurrence. Examples of such groupings are copper, lead...platinum metals, tantalum, industrial diamonds, quartz crystals, and strategic mica. With the possible...possible exception of industrial diamonds, quartz crystals, and mica, which are now in part produced synthetically | | | Book (edition) | | Cleavage Optics Spectral Inclusions Luminescence Occurrence Stone Sizes Comments XlX XIX XlX XX XX XX XXl...assistance is both significant and critically needed. I am delighted to gratefully acknowledge the following...and occupy all the space available to them. At lower temperatures atoms stay in contact for a longer...many stones have been discussed in the literature as am blygonite, when a glance at the optical data reported...example of this is the mineral quartz, the most common mineral on earth. Quartz, in the form we see as pretty |  | | 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...possible for many gem color for the first I am grateful in the edition of the encyclopedia first...molecules and accurate. random and occupy all At lower temperatures atoms THE NATURE OF GEMS fly about...example of this is the mineral quartz, the most common mineral on Earth. Quartz, in the form we see as component |  | | Book | | Republic (Mi lan Novak). Hungary (Sandor Szakall), Po land (Ewa Koszowska). Ro mania (Gheorghe Uduba~a), Slovakia...Fir t (The Natural History Mu cum. London. UK). Maria Fbldvari (Geological urvey of Hungary. Budapest):...cave high, height hill lake lillle, small low, lower mine mountai n mountains range or chain open-pi1...cave high. height hill lake lillle. smal l low. lower mine mountain mountains range or chain open-pil...noted in the Rodna Mt . (e.g. Blazna Valley). The Lower Cambrian ore belt. ho ted by the Tulghe~ Group. |  | | Book | | witnessed the spread of reptiles in the oceans and on land, the first appearance of mammals. All of this was...final portion of this collection is centered on the land environment. Spencer Lucas provides a review of...biotic groups first evolved or suffered extinction on land and in the sea (e.g., Lucas 1999; Lucas and Orchard...the text. A Southern Alps/central Europe (mainly Austria and northern Italy, see Fig. 1.3), B British Columbia...The Late Triassic Timescale 5 Fig. 1.3 Map of Austria and adjacent areas showing localities important |  | | Report (volume) | | .......... 21 Quartz monzonite............................................. 22 Quartz diorite............................................. Bay Horse district.................................................CONTENTS. Mining districts Continued. Bay Horse district Continued. Mines and principal prospects Continued.................................... Yankee Fork district................................................. CONTENTS. 7 Mining districts Continued. Yankee Fork district Continued. Mines and principal prospects Continued |  | | Book (edition) | | that is, to the group which is most common occurrence and which shows the highest degree of The methods...(21). (20). Tourmaline Type Phenacite Type Quartz Type 109 110 112 114 Mathematical Relations...crystalline form, physical and chemical characters, occurrence in nature, and other points. 4. Literature. Reference...= Obs. O.F. Pyr. Hardness. Observations on occurrence, etc. Oxidizing Flame (p. 331). Pyrognostics...indicate the angle between two faces of a crystal, as am (100 A 110) PART I. CRYSTALLOGRAPHY GENERAL |  | Graupner, Torsten, Kempe, Ulf, Klemd, Reiner, Schüssler, Ullrich, Spooner, Edward T. C., Götze, Jens, Wolf, Dieter (2005) Two stage model for the Muruntau (Uzbekistan) high grade ore structures based on characteristics of gold, host quartz and related fluids. Neues Jahrbuch für Mineralogie - Abhandlungen, 181 (1) 67-80 doi:10.1127/0077-7757/2005/0181-0002 | Journal (article/letter/editorial) | | structures based on characteristics of gold, host quartz and related fluids Torsten Graupner, Ulf Kempe...compositions, have been identified in a high-grade quartz vein zone (Central veins) and in adjacent altered...precipitated simultaneously with the growth of primary quartz in dilational sites during early stages of Central...bodies at Muruntau consist of large, high grade quartz veins surrounded by altered wall rocks with stockwork...low-sulphide quartz bodies in the central parts of the ore bodies are referred to as Central quartz veins (Shayakubov |  | | Book | | 106 107 108 109 110 112 113 114 114 115 119 120 Quartz Chalcedony Tridymite Cristobalite Nepheline Cancrinite...General Sanidine Orthoclase Microcline Anorthoclase Adularia Plagioclase Series General Determination of approximate...indices in the range 1.45-2.0. The minerals in the lower part of this range have various types of nonmetallic...particles, their visibility and their indices —the lower indices can be determined more accurately. Accuracy...which its petrogenetic history may be determined. Occurrence and chemical composition are, of course, the |  | | Book | | possessors. The nature of crystals Observation of quartz crystals, which are mainly of hexagonal, prismatic...of pyrite (cubic system); 2. crystals of smoky quartz (trigonal system); 3. prismatic crystal of phosgenite...faces (anhedral crystals). In the photo: Twinned quartz. Some stones are twinned, i.e. with two or more...subjecting a spherical piece of glass and another of quartz, to two simple experiments. The first, a chemical...The glass of quartz (b) subjected to a test of chemical solubility. the assumes one quartz the while shape |  | | Book | | Karampelas, Nataliya N. Kononkova, Anatoliy G. Nikolaev, Maria O. Anosova, Alina V. Somsikova, Yuriy A. Kostitsyn... . . . . . . . . . . . . . . . . . . . 178 v Maria I. Filina, Elena S. Sorokina, Roman Botcharnikov...Heidrich, Federica Zaccarini, Anthony Fallick, Maria Tsortanidis and Andreas Lampridis Gem Corundum Deposits...Xydous On the Color and Genesis of Prase (Green Quartz) and Amethyst from the Island of Serifos, Cyclades...Filina et al. [15] presented data on another occurrence of sapphires in the same region of the South |  | | Book | | Heike Lehner (Heidelberg), Joachim Lorenz (Karlstein am Main), Karl Mannheim (Würzburg), Vesna Marchig (Hannover)... . . . . . . . . . . . . . . . . . . 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 |  | | Journal (article/letter/editorial) | | silver (Boyle 1968, 1979). Revealing the forms of occurrence of noble metals in iron sulfides is of fundamental...0003-004X/16/0012–2731$05.00/DOI: http://dx.doi.org/10.2138/am-2016-5808 be avoided. Data from the phase diagram...pyrite single crystal from the Berezovskoe gold-quartz deposit (Ural, Russia). Microprobe analysis showed...resulting column was sealed under 10–3 torr in the quartz ampoule. The samples were slowly heated to 500...fineness higher than the initial fineness, but lower than 830‰ (Figs. 1 and 2). It was established that |  | | Journal (issue) | | from the C en ten n ia l Eureka m in e, T intic district, Juab C ounty, U ta h ..........................they rem ark on the note worthy and unusual occurrence o f such a rare mineral. However, as contem porary...end o f the Wallapai Mining District. The major mining centers of the district included Cerbat, Chloride...is gener ally at a stand-still throughout the district. The town of Cerbat played a lively role in the...Journeys in Arizona (1958). Flagg cited it as an occurrence of slender, pale brown crystals of “endlichite” |  | | Book (edition) | | III there is an elementary discussion of the occurrence, This includes a brief descripand association...due my colleague, Professor C. F. Tolman, Jr., I am for suggestions concerning certain portions of Part...(Glass and Hydrocarbons) PART 413 III THE OCCURRENCE, ASSOCIATION, AND ORIGIN OF MINERALS A. General...Verlagshandlung, Stuttgart, 1905. PART III THE OCCURRENCE, ASSOCIATION, AND ORIGIN OF MINERALS BECK (WEED):...determined, there yet remain the facts of its occurrence and association, and the problem of its origin |
|
