 | | Journal (article/letter/editorial) | | carbonic oxide. From five specimens of meteoric iron, hydrogen only was obtained, without a trace of...oxidisable substance, for example carbon, a metal such as iron, or a metallic protoxidc. Ferrous oxide, a substance... ,.. ...... 1164-1168 Adularia 1172 Albite Microcline 1169 Labradorite 1223-1235 Tourmaline 1012-1102...246-254).Analyses are given of several coals, iron pyrites, and iron ores. L. J. S. Products of Decomposition...of a schistose quartz-felsparporphyry. A massive, iron-black mineral with sub-conchoidal fracture gave |  | | Book (edition) | | hydrated silica; and limonite, an amorphous hydrated iron oxide. CRYSTALLOGRAPHY AND CRYSTAL CHEMISTRY The...pyrite crystal makes it possible to assign it to a lower symmetry class than that of the geometric cube,...some of the contents of a unit cell must have a lower symmetry than that of the particular Bravais lattice...how, in the passage from the upper form to the lower, the silicon atoms are more symmetrically spaced...result take different names depending on the ratio of iron to magnesium (breunnerite, mesitite, pistomesite) |  | | Book | | , for the field rock saw; DeBeers Consolidated Mines, Inc., for the three stages in diamond cutting;...facets 1 on (the crown); 8 pavilion facets, 16 lower-girdle 21 Brilliant-cut Shaping a brilliant-cut...properly cut; (c) too shallow and 1 culet on the lower part (the and number of facets vary according facets...diamond saw. sizes, Pavilion. 26 The faster, lower part of a faceted gem, below the girdle. On a...gem stones of tumblers-the upper rotates, the lower vibrates. Polished shapes and sizes, known as baroques | | | Book | | for the field rock saw; DeBeers ConsoliÂŹ dated Mines, Inc., for the three stages in diamond cutting;...the upper part (the crown); 8 pavilion facets, 16 lower-girdle 21 Brilliant-cut diamond a brilliant-cut...cut; (c) too shallow facets, and 1 culet on the lower part (the pavilion). The proporÂŹ tions and number...but more expensive, diamond saw. Pavilion. The lower part of a faceted gem, below the girdle. 26 On... Two models of tumblersâthe upper rotates, the lower vibrates. Polished gem stones of irregular shapes |  | | Book | | silicon, oxygen, oluminum, sodium, potassium, calcium, iron, and magnesium. These are the elements that combine...in rocks with no feldspar or quartz, the type of iron and magnesium minerals present. Rocks with crystals...ice, and wind ) to new locations, generally at lower elevations, and deposited in layers. The deposited...being more readily attacked than those formed at lower temperatures. Igneous minerals ore commonly attacked...charges). ELEMENTS are fundamental substances such as iron, carbon, and oxygen. There are over l 00 different | | | Book | | , for the field rock saw; DeBeers Consolidated Mines, Inc., for the three stages in diamond cutting;...upper part (the crorvn); 8 pavilion facets, 16 lower-girdle 21 Brilliant-cut diamond Shaping a brilliant-cut...but 1nore expensive, diamond saw. Pavilion. The lower part of a faceted gem, below the girdle. 26 On... Two models of tumblers-the upper rotates, the lower vibrates. Polished gem stones of irregular shapes...except at the very base of the specimen, by the iron-oxide coating. This large group is from Galena, |  | | Book (edition) | | Mountains, Utah; (lower /eft) rnodochrosite, NâChwaning mine, South Africa; (lower left, center) wulfenite...Cloud mine, Arizona; (lower right, center) mimetite, Tsiimehb, Namibia; (lower, right) gold, Amazonas...Graeber Cureton Mineral Company Colorado School of Mines Charles and Marcelle Weber Dan Behnke Demetrios...minerals is imparted by transition elements, especially iron, manganese, titanium, chromium, and copper. Despite...sulfide deposit; contains a concentration of hydrated iron oxide. habit The characteristic crystal form of | | | Book (edition) | | Mountains, Utah; (lower le ft) rhodochrosite, N'Chwaning mine, Sou th A frica; {lower left, center) wulfenite...Clouo rrnn·a, Arizona; (lower right, center) mimetite, Tsurneb, Namibia, (lower, right) gold, Amazonas...Graeber Cureton Mineral Company Colorado School of Mines cw Charles and Marcelle Weber DB Dan Behnke DE Demetrios...minerals is imparted by transition elements, especially iron, manganese, titanium, chromium, and copper. Despite...sulfide deposit; contains a concentration of hydrated iron oxide. habit The characteristic crystal form of |  | | Book (edition) | | contribute to the science of mineralogy. An abundant iron mineral, goethite, is named after Johann Wolfgang...already rich in âold timersâ from the famous zinc mines of Franklin, New Jersey, which he inherited from...are being opened or systematically worked, as in mines and quarries, the amateur is far better able to...metals INTRODUCTION 1] such as gold, silver, iron, etc. Even these are really never pure because ... âfrom Argentum Gold Au âfrom Aurum Silver Iron Lead Fe Pb âfrom Ferrum âfrom Plumbum Sodium |  | | Book (edition) | | Mineralogy, Museum of Geology South Dakota School of Mines & Technology Rapid City, South Dakota GEORGE ROBERT...formulas. We have indicated the ionic charge on iron and manganese. Hardness: Mineralogists have long...minerals is imparted by transition elements, especially iron, manganese, titanium, chromium, and copper. Despite...mass; (2) a concretionary lump of manganese and iron oxides found on ocean bottoms. occurrence The physical...value than a precious stone, ordinarily one with a lower hardness and brilliance and/or greater abundance | | | Book (edition) | | contribute to the science of mineralogy. An abundant iron mineral, goethite, is named after Johann Wolfgang...already rich in "old timers" from the famous zinc mines of Franklin, New Jersey, ,,vhich he inherited from...are being opened or systematically vvorked, as in mines and quarries, the amateur is far better able to...metals INTRODUCTION ll such as gold, silver, iron, etc. Even these are really never pure because they...if they are to be used. These are: Antimony Gold Iron Lead Mercury Sb Au Fe Pb Hg -from Stibium -from |  | | Journal (article/letter/editorial) | | pp.).-The sand of a small lake in the granite district at Stepanowka, near Voronovica, Gov. Podolien...characters of garnets from the Eugenie-Maximilianoff mines are described ; they are in agreement with those...).-The minerals described are from the graphite mines of Gross-Tresny. #tolpenite fills crevices in the...NaAl(SiO,),?: The emerald-green spots contain a little iron and traces of chromium. SO,. A1,0,. Fe,O,. FeO....Loss on ignition. Total. 0.67 98.18 L. J. S. Microcline pseudomorphous after Adularia from the Altai |  | | Report (issue) | | Deposits of the St. Lawrence County Magnetite District Northwest Adirondacks New York GEOLOGICAL SURVEY...Deposits of the St. Lawrence County Magnetite District Northwest Adirondacks New York By B. F. LEONARD...district_____________________ Discovery of Adirondack iron ores (1796-1830)____. Development of magnetite ores...__ Rocks of the St. Lawrence County magnetite district. Metasedimentary rocks and migmatites____._ Pyroxenic...of occurrence in the district ____________ Mineralogy of skarns in the district-..._______ Nomenclature |  | | Report (issue) | | ONTARIO DEPARTMENT OF MINES Hon. G. C. Wardrope, Minister D. P. Douglass, Deputy Minister J. E. Thomson.... . .. . . . .. . . . . . . 7 Orthoclase and Microcline..... . . . . .. . . . . .. . . . . . . . .. ... . .. . . . . . . . .. . . . . .. . . .. . 7 Microcline microperthite. .... . . . .. . . ... . . . ....Ontario Department of Mines. Publications of the Ontario Department of Mines and pricelists are obtainable...the Publications Office, Ontario Department of Mines Parliament Buildings, Queen's Park Toronto, Ontario |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | example, gray antimony is now called stibnite, spathic iron is now known as siderite, and blue vitriol is now...Institut fur Mineralogie der Universitat Wien, Austria. Michael Zolensky: Lyndon Johnson Space Center...carbonate Species typical of mollusc shells, the iron compounds found in bacteria, and oxalate crystals...produced may result in observed optical character of lower symmetry than is expected for the crystalâs ideal...nine chemical elements: oxygen, silicon, aluminum, iron, calcium, sodium, potassium, magnesium, and titanium |  | | Book | | Whence Do They Come? 82 Early Uses of Meteoric Iron Bibliography Appendix I Classification of Meteorites...meteorite Meteoric stone, Allegan, Michigan Meteoric iron, Mazapil, Mexico Meteor Crater, Arizona Portrait... Styria Meteoric iron, Casas Grandes, Chihuahua, Mexico The Cape York meteoric iron The Willamette meteoric...meteoric iron The Bacubirito, Sinaloa, Mexico, meteoric iron .... 20 21 22 2,4 26 27 28 . . . ... .... Iron meteorite, Owens Valley, California Polished slice of Cumberland Falls, Kentucky, meteoric |  | | Book (edition) | | there is an imitation of the another system of lower grade, is particularly common in The result is reached...possible for the given system, while the others are lower in grade of symmetry. It is important to note that...bXos, comOn the other hand, under the classes of lower symplete, and Mpz, face). metry, a certain form... CRYSTALLOGRAPHY 22 In certain classes of still lower symmetry a given crystal form may have ut one-quarter...occur 29. Hemimorphic Forms. under the classes of lower symmetry than that of the normal class which are |  | | Book (edition) | | 3500 B.C. in Europe and earlier in Asia, and the Iron Age, beginning in Europe about I 000 B.C. and also...masses of native metal by smelting at lower temperatures, while iron, which rarely occurs native, is smelted...considerable time had to pass before the art of producing iron could evolve from the knovvn art of smelting copper...manganese, pink or red rhodonite and rhodochros,te; iron, red garnet, green tourrnaline, green to brown oli...Potassium Calcium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Arsenic Selenium Bromine |  | | Journal (article/letter/editorial) | | native bismuth from the Cariviri and Jucamariri mines at Sarasora, arsenical pyrites occurring in a sericitic...acids, was fonnd with wollastonite in the copper mines of Karalinsk, in the Kirghie Steppes. Analysis gave-... i n length occur. The sulplturic acid from the iron pyrites in the anthracite has acted on the dolomitic...are from the American Eagle Mine, Tintic mining district, Utah, several being new to Anierica. 1. OZivenite...urvolgyite (herrengrundite) i n the abandoned copper mines of the Sandberg, between Altgebirg and B. H. B. |  | | Book | | Ore Deposits (12 colour plates) 158 Rare Metals Iron Ores Ores of Ferro-alloys Ores of Fleavy Metals...Dysprosium Erbium Einsteinium Europium Fluorine Iron (Ferrum) Fermium Francium Gallium Gadolinium Germanium...hardness. Each mineral will scratch those in a lower division on the scale and can be scratched by those...Normally white, but may be brownish or reddish due to iron oxide impurity. Many pebbles and boulders of rock...Adularia 60% Andesine Sanidine 40% Labradorite Microcline 20% Bytownite Anorthite (pure Ca-feldspar) 100% |  | | Report (issue) | | NEW MEXICO SCHOOL OF MINES STATE BUREAU OF MINES AND MINERAL RESOURCES PIT AT HARDING MINE (To left...FRONTISPIECE NEW MEXICO SCHOOL OF MINES STATE BUREAU OF MINES AND MINERAL RESOURCES E. H. WELLS President...N. M. 1937 CONTENTS Page The State Bureau of Mines and Mineral Resources ----------------------------------------...of pegmatite mines and prospects ---------------------------------- 63 Cribbensville mines -----------...----------------------------------68 Miscellaneous mines and prospects ---------------------------------------- |  | | Report (issue) | | PETROV AND JAROSLAV HYRSL PAGE 70 The Panasqueira Mines: One Hundred Years of Fluorapatite BY CARLES CURTO...apatite structure is complex and contains three district sites on which the cations sit. The calcium and...the same name but the suffix "-M" is added. The lower order of monoclinic symmetry is never apparent in...with large aesthetic crystalsoften found on a microcline or quartz matrix. Samples are found in cavities..."faden," 5.6 cm tall Alchori, Shigar Valley, Skardu District, Gilgit Baltistan, Pakistan John Rakovan collection |  | | Book | | Mercury out its interior, there may be enough iron, silicon and other heavy elements to make a dense...and is a quarter of the diameter of the has a lower density. It has, therefore, only about one-sixth...impact crater believed to have been formed by a large iron meteorite which probably weighed about 50000 tonnes...Meteorites are classified into: 1 iron meteorites â made essentially of nickel-iron alloys (4-20 per cent nickel)...stony-irons â silicates plus metal; 3 stony meteorites â consisting mainly of magnesium and iron silicate |  | | Book | | part Elements Oxygen 27.72 Silicon Aluminum Iron Calcium Sodium Potassium Magnesium Titanium...important emerald locality is limited to a small district near Muzo in Colombia, South America. Minerals...and gold; tin, tungsten, and molybdenum; iron and manganese; iron and titanium; nickel and cobalt; nickel...others. The United States has large deposits of coal, iron, potash, molybdenum, copper, lead, zinc, phosphate...influenced by the desire of each to control the iron deposits of Alsace-Lorraine. 3 Minerals which | | | Book | | scattered throughout its interior, there may be enough iron, silicon and other heavy elements to make a dense...quarter of the diameter of the Earth and has a lower density. It has, therefore, only about one-sixth...impact crater believed to have been formed by a large iron meteorite which probably weighed about 50000 tonnes...into: I iron meteorites â made essentially of nickel-iron alloys (4-20 per cent nickel); 2 stony-irons â silicates...meteorites â consisting mainly of magnesium and iron silicate minerals. Many of the stony meteorites |
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