 | | Book | | characteristic forms, it is rather difficult even for an expert to classify them. For this reason typical...however, are composed of a single element, such as copper, gold, sulphur, or carbon. The latter is better...elements of heavy metals are present at this time ore veins are formed. The process of direct separation of...mirror (reflection ) plane. 2. The axis of symmetry is an imaginary line passing through the centre of the...tetrad and hexad axes according to the number of times an identical face is displayed during rotation through |  | | Book | | heldatBled/Yugoslavia 3-7, 1977, held at Leoben/ Austria 5-10,1981, held at Berchtesgaden/Bavaria, FRG ...stimulating advocate of new ideas on the genesis of Alpine ore deposits, rendered the puplication of the Proceedings...organizing the next ISMIDA in France. In the meantime an invitation has been offered by the B.R.G.M., Orleans...and Trading in the Berchtesgaden and Salzburg Area. An Introduction to the Historical Background of the... J.G. Haditsch and H. Mostler The Succession of Ore Mineralization of the Lower Austroalpine Innsbruck |  | | Book | | becomes an easy matter, even for • novices. This new guide to minerals, however, is more than an aid to...structure of a type of crystal does not always adhere to an unvarying chemical formu la. In siderite, for example...Germany), 3x almost identical in size. They form an unbroken solid solution series extending from one...can use to construct its lattice. Photo: Siderite, an iron carbonate, can also contain magnesium and manganese...and determining the streak with the streak plate ore the basis of every mineral identification. are different |  | | Book | | pages. Identifying individual minerals is there is an extensive glossary. Combined made much easier, by...are meant to give a general impres- tions of where an individual mineral is sion of the form of a particular...dis- drawings, and photographs in the guide allow an even closer identification. Cate- tinguishing it...characteris- 1 to 7. Values beyond 7 are indicated by an arrow pointing downward at the bot- tic and its...represented in the photograph or are not identification of an unknown mineral. If detectable not, refer to the | | | Book | | N .Y. 10016 Ori ginal edition publi shed in Germ an under the titl e Min.erafien aus al/er Welt © 1990...Following the guide for identification, there is an extensive glossary. Combined with the extensive index...identify minerals. Included are notations of where an individual mineral is found , to which category it...text, drawings, and photographs in the guide allow an even closer identification. Categories of minerals·...values from 1 to 7. Values beyond 7 are indicated by an arrow pointing downward at the bottom of the scale | | | Book | | to check against your specimens. You'll also find an ~xtensive glossary of ter111inology that's especially...Following the guide for identification, there is an extensive glossary Combined with the extensive index...identify minerals. Included are notations of where an individual mineral is found, to.-which category it...text, drawings, and photographs in the guide ailow an even closer identification. Categories of minerals...values from 1 to 7. Values beyond 7 are indicated by an arrow pointing downward at the bottom of the scale | | | Book | | STREAK COLOR 26 Whne and ColorJess 26 Green 130 Grey an...Following the guide for identification, there is an extensive glossary. Combined with the extensive index...1dennfv mmerals. Included are n0Lat1ons of where an md1v1dual mmeral 1s found . to which caLegory Lt...text, drawings, and photographs in the guide allow an even closer identification. Categories of minerals...values from 1 co 7. Values berond 7 are indicated by an arrow pomung downward at the bmtom of the scale. |  | | Book (edition) | | great changes of emphasis in mineral collecting and an unforeseen growth in the number of collectors. Mineral...Africa, and Asia have become significant sources. An increasing recognition of investment values in fine...carefully preserved to arrive on a dealer's shelf in an unblemished state. Would that the old-time miners...The wonders formed by nature are unique, and ore veins represent seeps from cubic miles of magma. Ownership...common can't-be-bothered attitude can be replaced by an enlightened recognition of the operators' public |  | | Book | | R. Webster GOLDEN, GOLDEN GUIDE, GOLDEN PRESS® ore trademarks of Western Publishing Company, Inc. ...mechanical properties, mineralogists have gained an understanding of the forces that hold crystalline...in the surrounding rock and deposits sulfides in veins. The water is also important because it affects...general, phaneritic implies an intrusive origin; CLASSIFICATION aphanitic, an extrusive origin. Porphyritic...rock some distance away. Formation of important ore minerals may occur by metasomatism at or near the |  | | Book (edition) | | worth mining. The formation of various types of ore deposits is of greatest importance to the economic...mathematics. For these reasons, mineralogy is not an exotic "isolated" science by any means, and the skilled...n1ineralogy fron1 a simple descriptive science to an investigative one ,vill be discussed in follo,ving...3 THE AGES OF METAL It is likely that gold and copper, both known to occur widel y in native form, were...tarnishing, gold was used mainly for ornament; copper, easily hardened by hammering but suffering fro1n |  | | Book (edition) | | 264photoolgclelats 149 in ore) (eo)els /AField Guide to Rocks and Minerals © ‘Frederick H -Pough...than the usual find. In the preparation of this book an attempt has been made to simplify the identification...piece of equipment for the study of mineralogy and an extremely rapid means of distinguishing between some...minerals. Used in this way, ultraviolet light becomes an essential addition to the collector’s equipment....are not, in the main, remarkable museum specimens. An attempt has been made in most cases to select specimens |  | | Book (edition) | | crystals, will be found in this important volume by an experienced writer, mineralogist and lapidary. Over...as soon as we are able to wrap our fingers around an object that fits them, and changes only in refinement...knew nothing about the paintings of an obscure artist, or conversely, an obscure work by a great artist,...had so whetted his customer's appetite that ,vhen an example appeared, as it had a habit of doing soon...far different fields. It is the best evidence that an amateur need not stop at collecting, nor feel that |  | | | | arouse initial interest and supply the reader with an elementary knowledge of this important branch of...book is divided into two parts: the first contains an introduction to general mineralogy and a chapter...chromium, wolfram, molybdenum, tin, lead, zinc, copper, silver, mercury, gold, antimony, arsenic and...their external form, crystallography did not become an independent branch of science until the 17th and...All of them, however, have a common feature, i.e. an identical symmetry corresponding to the internal |  | | Book | | arouse initial interest and supply the reader with an elementary knowledge of this important branch of...book is divided into two parts: the first contains an introduction to general mineralogy and a chapter...chromium, wolfram, molybdenum, tin, lead, zinc, copper, silver, mercury, gold, antimony, arsenic and uranium)...their external form, crystallography did not become an independent branch of science until the 17th and...All of them, however, have a common feature, i.e. an identical symmetry corresponding to the internal | | | Book | | arouse initial interest and supply the reader with an elementary knowledge of this important branch of...book is divided into two parts : the first contains an introduction to general mineralogy and a chapter...chromium, wolfram, molybdenum, tin, lead, zinc, copper, silver, mercury, gold, antimony, arsenic and uranium);...their external form, crystallography did not become an independent branch of science until the 17th and...All of them, however, have a common feature, i.e. an identical symmetry corresponding to the internal | | | Book (edition) | | as soon as we are able to wrap our fingers around an object that fits them, and changes only in refinement...knew nothing about the paintings of an obscure artist, or conversely, an obscure work by a great artist,...had so whetted his customer’s appetite that when an example appeared, as it had a habit of doing soon...far different fields. It is the best evidence that an amateur need not stop at collecting, nor feel that...nothing to contribute to the science of mineralogy. An abundant iron mineral, goethite, is named after Johann |  | | Book (edition) | | p SSS=S== ° ra Q . ° We . . ° . A . . Der . . e . ar ° . . . ote . . he a . Gc ...uranium section that was added as a separate feature to an earlier edition is now incorporated into the mineral...properly belongs. The chemical tests continue to be an important feature of this guide. Many new color photographs...some changes of emphasis in mineral collecting and an unforeseen growth in the number of collectors. Mineral...out, particularly those promising Mexican sources. An increasing recognition of investment values in fine |  | | Book (edition) | | UNIVERSITY OF CALIFORNIA. Class THE GEOLOGY OF ORE DEPOSITS ARNOLD'S GEOLOGICAL SERIES General Editor... : DR. J. E. MARK, F.R.S. THE GEOLOGY OF ORE DEPOSITS BY H. H. THOMAS, M.A., B.Sc. AND D...practical acquaintance with metalliferous areas, and an exceptional knowledge of This has the very extensive...mass of important literature than the Geology of Ore Deposits. The choice of suitable illustrative examples...- - 48 - - 52 Segregation of Chrome Iron Ore - - Segregation of Cassiterite Segregation of |  | | Book | | arouse initial interest and supply the reader with an elementary knowledge of this important branch of...book is divided into tivo parts: the first contains an introduction to general mineralogy and a chapter...chromium, wolfram, molybdenum, tin, lead, zinc, copper, silver, mercury, gold, antimony, arsenic and uranium);...their external form, crystallography did not become an independent branch of science until the 17th and...All of them, however, have a common feature, i.e. an identical symmetry corresponding to the internal |  | | Book (edition) | | UNIVERSITY of AT LOS ANGELES LIBRARY THE GEOLOGY OF ORE DEPOSITS ARNOLD'S GEOLOGICAL SERIES General Editor... : DR. J. MARK, E. F.R.S. THE GEOLOGY OF ORE DEPOSITS BY H. H. THOMAS, M.A., B.Sc. AND D...practical acquaintance with metalliferous areas, and an exceptional knowledge of the very extensive literature...mass of important literature than the Geology of Ore Deposits. The choice of suitable illustrative examples...from Nepheline Syenites Segregation of Chrome Iron Ore Segregation of Cassiterite - Segregation of Alumina |  | | Journal (volume) | | gunpowder was invented in the 16th century, pyrite was an essential part of the mechanism of early firearms...cracks in crystal rocks such as marble, so that veins of minerals are formed . ◄ A pyrite mirror, dating...this surface . u, tD -·3 se uar Rose quartz is an uncommon form of quartz that is often used in necklaces...any of the mineral's normal industrial uses - as an abrasive or parts of a clock mechanism, for example...""I tD n -· 0 C u, u, "0 :::::s tD _.. An almost transparent crystalline mass of rose quartz | | | Book | | FOREWORD Of oll the objects of nolure, minerols ore omong the mosl reodily ovoiloble for study ond, becouse...for thi s guide could not hove been prepared. We ore therefore indebted lo Dr. Jomes E. Bever of Miomi... Webster GOLDEN, GOLDEN GUIDE , GOLDEN PRESS~ ore trodemorks of Western Publishing Company, Inc. Copyright......... 274 4 MINERALOGY AS A SCIENCE Minerals ore the natural crystalline materi als that form the...almost all solids except glass and organic materials ore crystalline. This is why knowledge of the structure |  | | Book | | ORE DEPOSITS OF MAGMA TIC ORIGIN THEIR GENESIS AND NATURAL CLASSIFICATION BY DR. PAUL NIGGLI !'ROl'&S50R...ESHER ., 'I I PREFACE book is for the most part an adaptation of lectures first held in the winter term...research in the geology of ore deposits can give clearer ideas about the origin of ore, that there is more in...research with respect to their chief asset, their ore deposit. The presentation of a view-point that envisages...connected phenomena in the formation of magmatic ore deposits that stewing in the magma chamber (Magmaherd) |  | | Journal (article/letter/editorial) | | dilIerentiation* D. S. KORZHINSKY Institute of Geologyof Ore Deposits,Petrography, Mineralogyand Geochemistry...which causes the precipitation of bases, including ore, from the solutions (KORZHINSKY, 1955). The leaching...solutions in the magma chamber, but on the passage of an “advancing wave of acidic components” along the flow...the solution, a phenomenon which may be designated an “acidic filtration effect”. The effects resulting...flow of transmagmatic and postmagmatic solutions as an “advancing wave of acidic components”. At any given |  | | Book (edition) | | OF ONTARIO AND QUEBEC. BY THE SAME AUTHOR. I. AN OUTLINE OF THE GEOLOGY OF CANADA BASED ON A SUBDIVISION...Von Kobell's celebrated Tafeln zur Bestimmung der Mineralien. III. ASSAY NOTES. PRACTICAL INSTRUCTIONS...subdivisions. order, and are discussed throughout in an essentially explanatory form. The first section...study of rock masses generally, and that of mineral veins and it includes also tural characters ; a brief...rock-recorded history (pp. 199 to 207). Part IV comprises an epitome or systematic synopsis of Canadian Palaeontology |
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