A Preliminary Report on the Bauxite Deposits of Georgia |
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A Preliminary Report on the Bauxite Deposits of Georgia Thomas Leonard Watson No preview available - 2019 |
A Preliminary Report on the Bauxite Deposits of Georgia Thomas Leonard Watson No preview available - 2019 |
Common terms and phrases
16th district 3rd district 3rd section 4th section alloy alum alumina aluminum alunogen Amer Arkansas bank Bartow county basalt Baux bauxite deposits Bauxite Mining bauxitic clay beds Bobo district boulders Cave Spring cent chert color compact containing Coosa Valley cryolite deposit is located deposits of bauxite depth dolomite ridge feet deep Floyd county following analyses fragments Geological Survey Georgia Bauxite Georgia-Alabama gibbsite grade halloysite hard Hayes Hermitage district indicate iron oxide kaolin Knox dolomite light-colored limestone Long Tons Manufacturing Company masses material matrix metal miles mineral Mining & Manufacturing occur oölites opening ore-body Paleozoic Paleozoic Group pebble pisolitic type prospecting region Rept Republic Mining rocks Rome shales silica SiO 2 H2O SiO 2 TiO Sixteenth Ann slope soft soluble alumina specimens Spencer structure surface Surv syenite test-pits TiO 2 SiO Total U. S. Geol vary Villeveyrac Vogelsberg Walker counties
Popular passages
Page 42 - In the report of the United States Geological Survey on the mineral resources of the United States...
Page 58 - ... the ore bodies grouped into fairly well defined districts known as the Hermitage district and the Bobo district. The remaining counties include only one or two deposits each, widely separated, as a rule, from each other. The Hermitage district is the largest in the Paleozoic area. It includes an area more than 50 square miles, lying between Rome, Kingston and Adairsville, east of the Oostanaula River and north of the Etowah River. It further occupies the contiguous northeastern and northwestern...
Page 51 - In its purest form, bauxite contains more or less foreign material, either chemically combined or mechanically admixed. Iron sesquioxide, present in variable amounts, ranging from a trace to percentages equal to and occasionally exceeding that' of the alumina, is usually present, in part .replacing the alumina and in part only as an impurity.
Page 144 - The 5 to 7 per cent, aluminum bronzes have a specific gravity of 8.30 to 8, and are of a handsome yellow color, with a tensile strength of from 70,000 to 80,000 pounds per square inch, an elastic limit of 40,000 pounds per square inch. It will probably be bronzes of this latter character that will be most used, and the fact that such bronzes can be rolled and hammered at a red heat with proper precautions will add greatly to their use. Metal of this character can be worked in almost every way that...
Page 16 - Hadamar, in the neighborhood of Lesser Steinheim, near Hanau, and especially the western slope of the Vogelsberg. Chemical analyses show certain differences in the composition of bauxite from different places, the smaller amount of water in the French bauxite referring it to diaspore, while the Vogelsberg mineral is probably Gibbsite (hydrargillite). The bauxites of Ireland, of the Westerwald, and the Vogelsberg, show by certain external indications their derivation from basalt.
Page 137 - The process consists in providing a bath of fused fluorides to which alumina is added, and then reducing this alumina by the current from a dynamo. The bath is contained in carbon-lined iron pots or crucibles, which form the cathodes, while the anodes are large carbon cylinders which are made to dip into the baths. The specific gravity of aluminum being greater than that of the bath employed, the metal sinks to the bottom of the pots, and can be tapped off. To make alloys, the required metal (eg,...
Page 142 - The aluminum melts almost instantaneously and diffuses with great rapidity throughout the contents of the ladle. The diffusion seems to be complete, for the writer has never seen the slightest action indicating want of homogeneity of mixture, all of the ingots poured from one ladle being precisely alike so far as the specific action of the aluminum is concerned. The quantity of aluminum to be employed will vary slightly according to the kind of steel and the results to be obtained. For opened-hearth...
Page 19 - Tertiary beds both above and below them at a few places, and must, therefore, be of Tertiary Age. As a rule, however, they have no covering, the overlying beds having been removed by erosion, and are high enough above the drainage of the country to be readily quarried. Erosive action has removed a part of the bauxite in some cases, but there are, in all probability, many places at which it has not yet been even uncovered. It is pisolitic in structure, and, like all bauxite, varies more or less in...
Page 143 - I. is recommended for small objects of jewelry ; alloy IV. is said to be the best adapted for larger objects and for general work, and is that most generally used. The successful performance of the act of soldering appears to require skill and experience, but the results obtained are said to leave nothing to be desired. Soldering tools of copper or brass should be avoided, as they would form colored alloys with the aluminum and solder. The skillful use of the aluminum tool, however, requires some...
Page 152 - ... machinery necessary. The deposits generally cover isolated hills, and are necessarily limited both in depth and lateral extent. Consequently if mining is to be done on a large scale, numerous localities will be worked out, and no permanent mining plant should be put up in any one place. All equipments should be as light and portable as possible, so that when one deposit is exhausted, they can be cheaply moved to another. WASHERS. The only treatment that it is necessary to give the ore in order...