 | | 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...arsenopyrite, orpiment, galena, bornite, bournonite, covellite, tetrahedrite, cobaltite, chalcocite, chalcopyrite...Normally white, but may be brownish or reddish due to iron oxide impurity. Many pebbles and boulders of rock |  | | Journal (article/letter/editorial) | | report onthegeology andoredeposits oœ theEly district, Nevada.Published bypermission of theDirector...specialreference.to the disseminatedores of the Ely district, Nevada, which, as mined, carry from 2o to 6o...assignable in a general way to higher, intermediate,and lower positionsin the body of sulphide-containing material...•rtmosphericoxygen is the oxidizing agent; somewhat lower down, where free oxygenhas beenexhaustedferric sulphatebecomes...transitions or stages,as'pyrite•halcopyrite--bornite--covellite•chalcocite. The following discussionis incompletein |  | | Report (volume) | | ............. ............................... Austria-Hungary_......-....---..--..---.---...- .... ....82 82 83 83 83 83 83 86 87 87 93 NijniTagilsk district............... ILLUSTRATIONS. .Page. PLATE...chromite. in part in octaheclra, from Tulameen district, British Columbia . III. A, Polished nugget of... Geological map of the Nijni-Tagilsk platinum district, Russia (after a map by A. M. Say tzeff)........they are placed in the same vertical columns with iron, cobalt, and nickel, it is natural to draw parallels |  | | 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: ¢ Austria ¢ Canada England @ Germany @ Poland @ Russia @ |  | | Report (volume) | | Composition of waters in copper and precious-metal mines of sulphide ores_ _____________________ Analyses__...Discussion of analyses. _______________________ Mines represented ________________________ Chemical changes...Arizona__________________________ 208 Note on the Bisbee district, Arizona, by F. L. Ransome_ 209 Globe and Miami...Mexico____________________ 22J Burro Mountain district, New Mexico_____________ 222 , Cananea, Mexico...Snowstorm lode, Coeur d'Alene district, Idaho__ _ 235 Encampment district, Wyoming_____________;___ 236 |  | | Book (edition) | | Tin, 51+6; Aluminum, 553 14. Iron and Ferroalloy Metals 561 Iron, 561; Manganese, 578; Nickel, 586;..... In these hundred years the production of pig iron has increased 100-fold, of mineral fuels 75-fold...geology to mineral finding in districts of waning mines. His knowledge is sought also by the metallurgist...parts: metalliferous deposits, such as gold, copper, iron, or nickel (Part II) ; and nonmetallic substances...fine placer gold in South America. At the ancient mines of Cassandra, Greece, which Sagui estimates to have |  | | 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 | | 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 | | when the current slackens 14 Camborne mining district in Cornwall, UK l ro- > 2 ® 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 | | 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 |  | | Journal (issue) | | CALCITE on HEMATITE Fred Bull 4 MI The UK Jouma/ of Mines and .Minerals publishes articles of interest to... N'(Olbl L'K Journal of Mines & Minerals No. 15 -2- UK Journal of Mines & 1'.lincrals No. 15 -J-...feet below the surface, he considered char the mines had probably been worked in the Bronze Age. Mr....the Derbyshire Caving Club, (which manages the mines for the National Trust). The pot was recovered from...Figure I Distribution of old metal mines in the Llanrwst district. Based on Dewey & Smith ( 1922) with |  | | 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,...hexagonal dipyramid (first MINERALS graphite covellite and second order) molybdenite dihexagonal prism...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 |  | | 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 |  | | Book (edition) | | Tin, 545; Aluminum, 551 479 14. Iron and F erroalloy Metals 560 Iron, 561; A1anganese, 575 ; Nickel,... . In these hundred years the production of pig iron has increased 100-fold, of mineral fuels 75-fold...geology to mineral finding in districts of waning mines. H is knowledge is sought also by the metallurgist...1netalli"ferous deposits, such as gold, copper, iron, or nickel (P art II) ; and non11ietaUic substances...fine placer gold in outh America. At the ancient mines of Ca ... sandra, Greece, "'-hich agui e... timates |  | | Book | | metallurgist were investigations on the history of iron and steel as well as that of copper. Prof. Dr. Marc... . 2.3.4 Industrial Phase: Developed Bronze and Iron Age and Later . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . . . 3.4.12 Iron . . . . . . . . . . . . . . . . . . . . . . . ..... . . . . . . . . . . . . . . . . . . . . 3.6.6 Iron Placers . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . . . 5.4.12 Iron Working Slags . . . . . . . . . . . . . . . . . |  | | Journal (article/letter/editorial) | | constant bombardment. I I I . — A RKCRNTLY POUND IRON M E T E O K I I E PKOM C O O K E V I L L E , PUTNAM...percentage composition to be mainly: nickel 6, iron 61, and iron oxide 28. The meteorite is in the possession...—NOTES ON THE WHITFIELB COUNTY, GEORGIA, METEORIC IRONS, WITH NEW ANALYSES. By GEORGE P. MERRILL. Proc....American Journal of Science, W. E. Hidden described an iron meteorite from Whitfield County, but gave no analysis...Kunz suggested that the East Tennessee (Cleveland) iron might be identical I Downloaded from https://www |  | | Catalog/List | | Interest METEORITES RARE - METEORITE SLABS! STONEY-IRONS Odessa, Ector County, Texas Beaver, Oklahoma ...CHALCOCITE PSEUDOMORPH AFTER COVELLITE, Butte, Montana Crisp , well -formed covellite crystals (to 1 cm) replaced.... $22.50 CACHOLONG, var. of OPAL, Huttenberg, Austria Unusual white botryoids of cacholong on chalcedony.... $5.00 Six River District, Port Orford, Curry County, Oregon Capsule with iron-black laurite grains...5 cm). Rich ! PARAMONTROSEITE, Ambrosia Lake District, New Mexico Rich , black, drusy paramontroseite |  | | 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...Phosgenite Ores montite Bismuth Iron 124. Hydrozincite Native antimony Iron-pyrites Polariscope Crocoite...11. Copper-ores Copper. I. Copper-glance, Covellite, Copper-pyrites, Copper-ores II. Bornite. Tetrahedrite...Goethite. Manganese-ores Euchroite, natural magnet. Iron. Manganese donite, Anglesite, Lead-ores IV |  | | 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 |  | | Journal (article/letter/editorial) | | initial ferrous iron concentration of 0 g L21, was identical: djurleite. bornite. covellite. chalcopyrite...copper leaching efficiency of chalcopyrite and covellite. However, it cannot explicate the high copper...effect is enargitew chalcopyritew chalcocitew covellite w bornite. These results do not agree with the... These minerals included djurleite, bornite, covellite and chalcopyrite. They were supplied by the Bofang...analysis/% XRD analysis Minerals djurleite bornite covellite chalcopyrite Cu Fe S Major phase Minor phases |  | | Journal (article/letter/editorial) | | County iron. Examination of thin sections, however, revealed marked differences. The Hidden iron is marked...disposed, parallel lying taenite bands. In the Shepard iron the kamacite bands are not swollen, but show very...Dalton for the Hidden and Shepard irons respectively. The Cleveland iron also must belong to a distinct...natural sulphides, viz. chalcocite 1 (Cu2 S), covellite (Cu S), Bornite (Cu6 Fe S4), chalcopyrite (CuFe...oxidizing agent, not only at elevated but also at lower temperatures. The sulphide enrichment products are |  | | Journal (article/letter/editorial) | | County iron. Examination of thin sections, however, revealed marked differences. The Hidden iron is marked...disposed, parallel lying taenite bands. In the Shepard iron the kamacite bands are not swollen, but show very...Dalton for the Hidden and Shepard irons respectively. The Cleveland iron also must belong to a distinct...natural sulphides, viz. chalcocite 1 (Cu2 S), covellite (Cu S), Bornite (Cu6 Fe S4), chalcopyrite (CuFe...oxidizing agent, not only at elevated but also at lower temperatures. The sulphide enrichment products are | | | 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, |  | | Journal (article/letter/editorial) | | formula (12Zn,4Fe,3Mg)0,Al20,. tonite, the zinc-iron variety of gahnite. A1,0,. FeO. ZnO. MgO. Total...Tysonite, Bastniisite, Prosopite, JeEersonite, Covellite, &a. By WILLIAM F. HILLEBRAND (Ames.. J. Sci....beautiful green colour occurs in the Dugway mining district, Torvel Go., Utah, associated with fluorite, silver...appearance, was found on analysis to be a mixture. Covellite, in splendid indigo-blue masses from the East...hydrated sulphates of copper, aluminium, &c., and of iron, aluminium, &c., from Montana. L, J. S. Rhodochrosite |  | | Book (edition) | | Bibliography: p. Includes index. I. Geology, Economic. 2. Mines and mineral resources. I. Bateman, Alan Mara, joint...NONFERROUS METALS 312 8. HYDROTHERMAL 105 20. IRON AND THE FERROALLOY METALS 386 9. SEDIMENTATION...rate of increase in the consumption of copper and iron was directly proportional to the increase in population...the consumption of copper increased 80 times and iron I 00 times! The quest for the wealth of minerals...and iron, for coal is one energy that makes the wheels go around and the wheels are made of iron. Those |
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