ISBN: 9781236571298

RareBooksClub.com. Paperback. New. This item is printed on demand. Paperback. 54 pages. Dimensions: 9.7in. x 7.4in. x 0.1in.This historic book may have numerous typos and missing text. … Mehr…

RareBooksClub.com. Paperback. New. This item is printed on demand. Paperback. 54 pages. Dimensions: 9.7in. x 7.4in. x 0.1in.This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1898 Excerpt: . . . them, are the Columbia terraces; and, east and west, mounting over, but capping, the Tertiary heights, are the white, red and orange gravels and sands of the Lafayette. Beyond the limits of the Ocmulgee valley, on both sides of the river, railroad and highway cuts expose the Potomac clay and sands, which vary from the occurrences, as described at Columbus, Butler and the Rich Hill district, in that they are less highly-colored, and that the remarkable, mottled appearance has grown less and less marked coming eastward. The characterstic cross-bedding is retained, and white sands and gravels, which may belong to the Cretaceous, or which may, however, be as recent as the Lafayette, overlie these clays, unconformably, occupying deep channels and wide, irregular areas in them, and containing much material, derived from their beds, and mixed in with the sand and gravel. Sometimes, this is present, as partings; and, sometimes, large fragments and even boulders of the white clay occur. Characteristic views, showing this phenomenon, may be seen in Plates IV, VI and VII. They will be described more minutely on another page. One of the best sections of the Lafayette, in the vicinity of Macon, is on the Forsyth road in Vineville. Here, are crossbedded gravels, containing large quartz fragments, and some mica, of a pink and red color, cut out by cross-beds of a very coarse gravel, with pebbles two to four inches in diameter, the whole coated with red iron oxide, which gives the mass its characteristic color. North of Macon, district Ij, lot Jjs, N. . , there are outcrops of the decomposed crystalline rock, unlike the gneisses in the vicinity of the Macon bridge, and showing rather the characteristics of schist. On the estate of Mr. R. E. Park, near Holton, there is. . . This item ships from La Vergne,TN., RareBooksClub.com, RareBooksClub.com. Paperback. New. This item is printed on demand. Paperback. 60 pages. Dimensions: 9.7in. x 7.4in. x 0.1in.This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1904 Excerpt: . . . lot ppp, 3rd district, 4th section, Floyd county. The ore outcrops over a surface of approximately 30 feet square. A cut, 20 feet long, 10 feet wide and three feet deep, has been opened on the outcrop, exposing a solid, compact body of ore. The ore is a pink-colored typical oolitic variety, and apparently promises well as to extent and quality. The following partial analyses indicate the character of the ore: --I1 II2 III2 IV2 Al203 39. 75 49. 72 48. 55 49. 80 Fe203 1. 62 SiO2 41. 47 H20 16. 14 Dr. Spencer describes the specimens of ore, from which the above analysis was made, as follows: Small pisolitic concretions in mass, grayish white, with some iron stains, occurring on top of ridge. 3 It will be observed, that these three deposits have a nearly due north-south alignment, and are in close proximity to each other. The indications are, that the three were deposited at the same elevation, and at about the surface altitude of the old peneplain in this section. If this be true, the Culbertson bank has suffered practically no erosion since deposition; while the Penny bank has been removed almost entirely, and the Gordon, in greater part, by subsequent erosion. The most southerly one of the three deposits, the Penny bank, was exhausted at a depth of from 20 to 25 feet, which would indicate, in case the deposits had the same depth, a remaining deposit of no and 190 feet, respectively, for the Gordon and Culbertson banks. The Fat John Bank. --This deposit is located on lot 607, 3rd district, 4th section, Floyd county, 10 feet below the summit; and on the southwest side of the highest point of a broad dolomite ridge. The surface of the ridge is covered with chert fragments, of various sizes and angularity. Three test-pits, of small dimensions, had been dug ne. . . This item ships from La Vergne,TN., RareBooksClub.com, RareBooksClub.com. Paperback. New. This item is printed on demand. Paperback. 66 pages. Dimensions: 9.7in. x 7.4in. x 0.1in.This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1911 edition. Excerpt: . . . feet across. The bare ledge to the north of the smaller pit for a length of 40 or 50 feet and a width of about 30 feet shows feldspar in crystals 2 to 4 feet across but containing numerous small crystals of black tourmaline. In the larger pit there is a small amount of feldspar of commercial grade at its northwest end, but in the smaller pit and in the unopened ledge near the pits black tourmaline is so intimately and abundantly associated with the feldspar as to render most of the latter valueless for pottery purposes under present commercial conditions. The coarsest and most highly feldspathic portion of the deposit as exposed in the larger pit contains some clevelandite and granular lepidolite and a few colored tourmalines of pink and green tints, which are translucent to opaque. A few small pockets occur and several less than a foot in diameter were exposed at the time of the writers visit. In some of the pockets a few transparent tourmalines of gem quality were found during the mining operations. South of the workings the ledge shows very little feldspar of pottery grade and within 200 feet there begins to be some admixture of schist with the pegmatite. Muscovite has been saved during the mining, but most of. it is what is known as wedge mica and would be valueless except as a source of ground mica. Biotite or black mica is very rare, black tourmaline being the principal iron-bearing impurity. The trend and exact limits of this deposit could not be determined, but there is every indication that the supply of feldspar suitable for use in the pottery trade is very small, most of the material showing too great an abundance of black tourmaline. An examination of the whole coast of the hill south of the pits showed no spar or other. . . This item ships from La Vergne,TN., RareBooksClub.com<

ISBN: 1236571290

Paperback, [EAN: 9781236571298], RareBooksClub.com, RareBooksClub.com, Book, [PU: RareBooksClub.com], RareBooksClub.com, 275116, Anthologies, 62, Fiction, 1025612, Subjects, 266239, Books

2013, ISBN: 9781236571298

Trade paperback, New., Trade paperback (US). Glued binding. 66 p. Contains: Illustrations, black & white., Miami FL, [PU: Rarebooksclub.com]