 | | Report (volume) | | ............................ 23 Manganiferous iron ores............................................................................ Descriptions of mines and deposits............................... Minor................................. Descriptions of mines and deposits ............................. 3 '................ v ........... 66 Descriptions of mines and deposits.............................. 66 New.............................. 70 Descriptions of mines and deposits ............................... 71 |  | | Book (volume) | | 138. 138. Orpiment Real- 139. gar 140 144, Iron-pyrites 148, 143 Group Marcasite Pyrrhotite ...Mispickel 150. 151 Ores 151. Haematite Meteoric Irons Nickel Chromite 159. Limonite 158. Polianite...69 174. 162 168 and 170. Meteoric and Pyrolusite 169. 155. 160. 66 site Magnetite Chalybite...Phosgenite Ores montite Bismuth Iron 124. Hydrozincite Native antimony Iron-pyrites Polariscope Crocoite...Rhodochro- Hauerite, Alabandite, 36. dote, Pyrolusite, II. Hausmannite, ores. Crocoite. Limonite |  | | 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 | | , 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 | | , 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 | | collect material. This applies particularly to mines and quarries, even if they are no longer 17 Panning...pyroxenes, amphiboles and biotite, which are rich in iron and magnesium, are known as mafic or ferromagnesian...shatters. In this way the mafic minerals alter to iron oxides, and felspars and muscovite weather into...include oolites, iron deposits precipitated in stagnant swamps, and nodules of iron and manganese formed...grains. The usual cements are calcite, silica and iron minerals. Finally, as sediments are buried and |  | | 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 | | its own mer- scratch those with the same or a lower rating, but its. As a result, not even all diamonds...Republic. ESS ERLES The amount of magnesium and iron in actinolite may vary from specimen to specimen...the amount to continuous atomic substitution. of iron increases beyond a certain point, the mineral ceases...other pyroxenes, the darker the aegirine, the more iron it contains. Thus the color varies from dark green...the search for something else. Main Sources: Âą Austria Âą Canada England @ Germany @ Poland @ Russia @ | | | Book | | when the current slackens 14 Camborne mining district in Cornwall, UK l ro- > 2 Âź oZD Q- »_ co 4-...collect material. This applies particularly to mines and quarries, even if they are no longer 17 Panning...pyroxenes, amphiboles and biotite, which are rich in iron and magnesium, are known as mafic or ferromagnesian...shatters. In this way the mafic minerals alter to iron oxides, and felspars and muscovite weather into...include oolites, iron deposits precipitated in stagnant swamps, and nodules of iron and manganese formed |  | | Book (volume) | | Rogers, . . . for in the lower column read in the column headed "lower." for c = qo' cos u sin X :...up 165 for to Temiskaming Cochrane district read district. Ref. 4, under oruetite, add See also... for VVakatipu district, CoUingwood, 294 Zealand read Wakatipu 303 line district, 8 in synonomy...P, for figure, for the lower face the lower face read R, and for the lower face-labeled n read N. ... 395 transpose the right hand figure with the lower right ha }id figure (Harz) hand figure, for f |  | | Report (volume) | | 50. II. Tertiary History of the G-rand Caiion District, with atlas, by Clarence E. Dutton, Capt. U. S... Geology of the Comstocls Lode and the Washoe District, with atlas, by George F. Becker. 1882. 4°. xv...Price $1.20. VIII. Paleontology of the Eureka District, by Charles Doolittle Walcott. 1884. 4°. xiii...New Jersey, by Robert P. Whittteld. The Penokee Iron-Bearing Series of Northern "Wisconsin and Michigan...R. P. Whitfleld. Geology of the Eureka Mining District, Nevada, with atlas, by Arnold Hague. Sauropoda |  | | Journal (article/letter/editorial) | | interest. Jrtmesonite.-Acicular crystals occurring with iron-pyrites a t t h e Cerro de Ubina, near Huanchaca...give the formula 7(Pbj,Fe;)S,4Sb,S3; in all cases, iron is present t o the extent of 2-3%. The formula ZPbS...classified as follows. A -Braunite, psilomelane, and pyrolusite associated with, and derived from, manganese-bearing...Archzean schists and gneisses. B.-Pailomelane and pyrolusite superficially formed on outcrops of rocks of...of Dharwar age. C.-Psilomelane and pyrolusite associated with, or contained in, laterite. Amongst the minerals |  | | Report (issue) | | Geological Sun·ey W. R. CRANE, U. S. Bureau of Mines PREPARED IN COOPERATION WITH THFJ U. S. GFJOLOGICAL...GFJOLOGICAL SURVEY AND THE U. S. BUREAU OF MINES Atlanta, Ga. INDEX PRINTING COMPANY, 1919 THE ADVISORY...Survey, and Dr. W. R. Crane of the U. S. Bureau of Mines, on the Manganese Deposits of Georgia, to be published...manganese minerals ........................... . Pyrolusite ....................................... . Psilomelane.................................. . Manganiferous iron ores .................................. . Manganiferous |  | | Journal (article/letter/editorial) | | treated is a concentrate containing 33 per cent. iron, 37 per cent. sulphur, and 30 per cent. calcium...three lead generators, taking together 90 lbs. pyrolusite. IOO lbs. salt, and zoo lbs. concentrated sulphuric...pressure of 2 0 0 l b s . ) , and replaces 972 ibs. pyrolusite, 1080 lbs. salt, and 2160 lbs. sulphuric acid...by the use of a filter-press a t the Kalgoorie mines, Western Australia, and leaching by circulation...by decantatiot and washing a t the Witwatersrand mines, South Africa. I n general, it may be said that |  | | Report (issue) | | useful information on the minerals of the coal strip mines around Oskaloosa and Knoxville from John Phipps...marcasite .................................. Pyrolusite ...............................................3) 4) 5) 6) Upper Mississippi Valley zincâlead district Mineral crystals, isometric ....................that is principally calcite with a periphery of iron sulfide. D. Close-up of polished Cordaites wood...shale with fibrous white satin spar on top. D. Pyrolusite dendrites on platy dolomite rock. 32 9) A. |  | | Book | | comparative study from colleagues, institutes, and mines; many samples were collected by the writer himself...which the earth core, consisting mainly of metallic iron together with the sulphide-rich and oxiderich intermediate...melt, and has there caused replacement of the oxide iron ores by forming the sulphides pyrrhotite, pentlandite...solidif}^ at temperatures several hundred degrees lower, and thus after the ore minerals. 2. Magmatic differentiation...nickel (in olivine and in sulphides) a part of the iron, titanium, vanadium, and the bulk of the sulphur |  | | 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 (edition) | | has been a name change, the old name is given in lower case letters and the new name follows in capital...edition under the old name. Jeromite ---Names in lower case indicate that the mineral (or substance) is...AUSTINITE CaZn(As04)(OH) Cochise County: Warren district, Southwest mine, 7th level; A small open cut on...to deep green crystals of cuprian-austinite. Pyrolusite was associated with this occurrence (R.W. Graeme...in a humid environment. Cochise County: Warren district, Southwest mine, 7th level where it is found as |  | | Report (volume) | | mineral deposits-__--_-_--------__------_-__-_-----Iron minerals__.---__________-____---_--____--__-___-___-_____..._____________________ Markets for manganese and iron ores.___________________________ Composition of...oxide from locality 15, plate 18________ 16. A, B, Iron and manganese oxides in stalactitic form from locality...quadrangles in Tennessee in which manganiferous iron ores occur._-__------__-----_-------------__ 227...horizon in the chert that contains manganese and iron oxides in varying degrees of concentration. Weathering |  | | 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 |  | | Book (edition) | | minerals of this character which a number of these mines have yielded, may be noted the following light a...larger of rare RARE MINERALS FOUND IN THE MICA MINES. Samarskite, TJrarinite, Pvrochlore, Idatchettolite...cerium, lanthanum and tions yttrium. The corundum mines, in the chrysolite ledges of the gion, have also...ores and ciated ores of zinc, lead â of gold, iron and copper, silver. Gold occurs almost universally...association with pyrite and ehalcopyrite, &c., as wfill Iron state, in nite, ( is be seen b}r a glance at |  | | Book (edition) | | years as mineralogist with the Arizona Bureau of Mines, he joined the faculty of the Uni~ersity of Arizona...position to become mineralogist for Silver King Mines, Inc., in Nevada. In 1965 he joined Phelps Dodge...and Robert T. O'Haire, of the Arizona Bureau of Mines, cheerfully provided counsel where sought. We are...with her customary care. The Arizona Bureau of Mines and the Tucson Gem and Mineral Society kindly provided...2. Porphyry Copper-Related Deposits The Bisbee District Tl1e Mammoth-St. Anthony Mine, Tiger 17 17 21 | | | Book (edition) | | years as mineralogist with the Arizona Bureau of Mines, he joined the faculty of the University of Arizona...position to become mineralogist for Silver King Mines, Inc., in Nevada. In 1965 he joined Phelps Dodge...and Robert T. OâHaire, of the Arizona Bureau of Mines, cheerfully provided counsel where sought. We...with her customary care. The Arizona Bureau of Mines and the Tucson Gem and Mineral Society kindly provided...2. Porphyry Copper-Related Deposits The Bisbee District The Mammoth-St. Anthony Mine, Tiger Lee Le 2A | | | 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) | | Cassiterite, Zircon, Pitch- 15. Manganite, Pyrolusite, Psilomelane : . 130 . . . CARBONATES:...Wavellite, 25. SILICATES 21. 84 . Marcasite, Iron-pyrites, Pyrrhotite SULPHUR-SALTS, &c. Copper-pyrites...(14, i) those in the cube by native copper (3,5), iron-pyrites (7,2), fluor-spar (9, i and 2), rock-salt...tetrahedrite, and sodalite. The special hemihedral forms of iron-pyrites and of zinc-blende and tetrahedrite will...Fig. 14 the vertical axis joining the upper and lower apices of the pyramid is longer than the two (equal) |
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