 | | Report (volume) | | .... Spotted slates .................................................... Igneous slates................. Chemical composition of New York and Vermont slates............. Economic geology of slate........................ Technical description of a slate quarry............................. PART II. SLATE DEPOSITS...tests of slates....................................... 122 Comparative characteristics of slates .................. 138 GLOSSARY OF GEOLOGICAL AND SLATE-QUARRY TERMS ....................... 146 INDEX ...... |  | | Report (volume) | | ....................... 9 9 11 14 14 Spotted slates..................................................................................... 25 Igneous slates......................................................... 53 Chemical composition of the roofing slates of eastern New York and western Vermont, by W.......................'.. Microscopic analyses of slates from Arkansas....................... Physical and........ Eldorado County, by E. C. Eckel. ................................ Merced County............... |  | | Report (issue) | | GEOBGIA FRONTISPIECE-PLATE I OLD DEVER QUARRY, ROCKMART, POLK COUNTY, WHILE OPERATED BY THE GEORGIA SLATE...potash, I spent two weeks examining the Pickens .County deposits. Since that time I have made several brief...labor and machinery. Development of the high-potash slates of the Cartersville district may be expected soon........ ·.................... . Tests of Georgia slates ........................................... . Conditions...deposits ............................... . Polk County .............................................. |  | | Journal (article/letter/editorial) | | .............................................. Quartz veins................................................................................. Morrison county.................................................................................. The graywacke slates....................................................................................... The clay slates..................................................were pronounced by Spurr to be Keewatin—th at is, Lower H uronian. The pre-Cambrian age of the series, which |  | | Journal (article/letter/editorial) | | Karkonosze Massif and Its Eastern Metamorphic Cover (SW Poland) Stanisław Z. Mikulski 1, * , Ian S. Williams 2...Research Institute, Rakowiecka 4, 00-975 Warszawa, Poland Research School of Earth Sciences, Australian National...University, Żwirki i Wigury 93, 02-089 Warszawa, Poland; Jan.Wierchowiec@uw.edu.pl Correspondence: stanislaw...SW edge of the East-European Platform (Figure 1, lower inset). The KP is surrounded by variably metamorphosed...enclaves), and in small isolated bodies of hybrid quartz diorite and granodiorite [17]. Subordinate varieties |  | | Journal (article/letter/editorial) | | The Minerals of Albemarle County, Virginia PART I: NATIVE ELEMENTS, SULFIDES, HALIDES, AND OXIDES By...University of Virginia, Charlottesville, Va. Albemarle County is near the center of Class I. Native elements...edge of the n ° t been found in Albermarle County, county follows the crest of the Blue Ridge but according..., and Jones (1932), the gathe James River. The county seat is Char- lena which occurs in the old Faber...selected specimens of quartz from by Jefferson, is in that city. veins in the mica slates east of SouthScattered |  | | Book | | REPORT OF PROGRESS c^ TTTE GEOLOGY PHILADELPHIA COUNTY AND OF THE SOUTHERN PARTS OF MONTGOMERY AND By...regions : 1881. address Pleasantville, Venango county, Pa. Sutton VVall, to report on the coal and...and Fulton counties address Uniontown, Fayette county. Pa. W. G. Platt, geologist for Centre and Clearfield...elaborated report on the geology of the rocks of the Lower Delaware and Schuylkill rivers, by Mr. Charles E...all outcrops in the southern townships of Bucks county and new surveys were made along the Bound Brook |  | | Report (volume) | | Devonian, along the meridian of 76°30', from Tompkins County, New York, to Bradford Coiyity, Pennsylvania, by...cents. 16. On the Higher Devonian Faunas of Ontario County, New York, hy John M. Clarke. 1885. 8°. 86 pp....57 pi. Price 25 cents. 38. Peridotito of Elliott County, Kentucky, by J. S. Diller. 1887. 8°. 31 pp. 1...Mountains, New Mexico, and on the occurrence of Primary Quartz in certain Basalts, by Joseph Paxson Iddings. 1890...Equivalents of the Sioux quarfczites, St. Lojris slates, etc............. Succession and equivalents of |  | | Report (volume) | | .............................................. Quartz monzonite .............................. ........quarries................................ Caledonia County ........................................................ Grout quarry............................................. Kearney Hill quarry......................................... Burke quarry .......................... ................. Newark ...................... Gibson quarry ............................................ Morrison quarry ................ |  | | Report (volume) | | Wisconsin____________________ 338 Chippewa River and Barron County ___________ 338 Central Minnesota ______________________..._ _ Succession_.._______________________... __ Lower Keweenawan____________________ Middle Keweenawan...Mexico at present______________________________ Lower California__________________________ Sonora and...places greater than between the later system and the lower Paleozoic. Practically the only uniform distinction...decomposition of quartz-bearing rocks, and involved the almost complete separation of the quartz grains from |  | | Book (volume) | | publisher. Cover photograph: Fluorapatite, Pulsifer quarry, Auburn, Maine (2.2 cm specimen), Harvard Mineralogical...greater variety of minerals are found in Oxford County, alone, than anywhere else on Earth of comparable...than Maine's, as well. An area smaller than Oxford County in Murmansk Ob last, Kola Peninsula, Russia, has...Carolina is a source of true emeralds and outstanding quartz crystals. New Hampshire has also yielded a few...clear to slightly blue topazes. However, San Diego County, California, is arguably the most important gem-pegmatite |  | | Journal (article/letter/editorial) | | .............................. 421 Sedimentary Slates and Q uartzites.................................................................. ......... 425 Lower Mesozoic Subgroup........................................................................... 426 Slates, Greenstones and Lim estones.............................................. 430 Thinly laminated Slates and Serpentines...................................................................... 431 Upper Slates............................................... |  | | Book (edition) | | minerals, some number of them not hitherto or, The Mica mining industry, elsewhere discovered iu America...for number of rare and comlarger carry a veins The Mica species. of them of great interest, and a Among...noted the following: RARE MINERALS FOUND IN THE MICA MINES. Samarskite, Urinite, Pyrochlore, Hatchettolite...occurrence of notable miner- many points in the mica mining section of the State, and elsewhere. The... other useful minerals will be g., muscovite (mica), chromite, corun- limestone beds in the piedmont |  | | Book (edition) | | of them not hitherto or elsewhere discovered The Mica mining industry, for example, has brought to a...NORTH CAROLINA. 2 many new and rare species. The Mica veins carry a and complex combinations than those...number larger of rare RARE MINERALS FOUND IN THE MICA MINES. Samarskite, TJrarinite, Pvrochlore, Idatchettolite...great many very interesting and unique forms of quartz crystals and rutiles, and has added a great number... me some and to, lias of the novel forms of quartz crys- furnished some valuable notes also of |  | | Book | | Several specimens of a particular mineral, e.g. quartz, may vary not only in colour (see plates) but also...graphite. The basic element of the commonest mineral — quartz — is silica (SiO,), a compound of silicon and oxygen...40-50 — are generally rock-forming, e.g. quartz, felspar, mica, pyroxene, amphibole and olivine. These...so-called pegmatites, in which such minerals as mica, tourmaline with others containing elements and...At a later stage they often become filled with quartz, agate or chalcedony. The largest part of the gases |  | | Report (issue) | | RESOURCES PUBLICATION 89 MINERALS OF ALBEMARLE COUNTY, VIRGINIA Richard S. Mitchell and William F. Giannini...RESOURCES PUBLICATION 89 MINERALS OF ALBEMARLE COUNTY, VIRGINIA Richard S. Mitchell and William F. Giannini...RESOURCES PUBLICATION 89 MINERALS OF ALBEMARLE COUNTY, VIRGINIA Richard S. Mitchell and William F. Giannini...talc l0 PUBLICATION 89 MINERALS OI' ALBEMARLE COUNTY. VIRGINIA Richard S. Mitchell* and William F....references to various minerals found in Albemarle County are found in both published and unpublished geological |  | | Report (edition) | | ON THE LOUISVILLE AND NASHVILLE RAILROAD, GILMER COUNTY, GEORGIA. . . " -.. ~. . ~- .. _ .......chapter on the serpentine deposits of Cherokee County, known to the trade as V erd Antique marble. Care...THE DEVELOPMENT OF THE MARBLE INDUSTRY IN PICKENS COUNTY, GEORGIA .. (I) Tht:! Georgia Marble Company ....GEOLOGY ..... 31-34 CHAPTER IV MARBLES OF FANNIN COUNTY. ................... 35-43 Description of Individual... . . . . . 35-43 CHAPTER V MARBLES OF GILMER COUNTY ..................... 44-48. Description of Individual |  | | Book (edition) | | mmed at Broken Arrow aud Trout creek, in Sc. Clair county. The strata in this field are more faulted und...prong of Canoe creek, in St. Clair county, to Ha\sop creek, in Bibb county, a distance of 60 miles. Down to...to Helena, in Shelby county, the field has an average width of 5 or 6 miles. Below that point the width...miles being in the latitud" of Blocton, in Bibb county. The south ern end of this field has a greater...Jefferson county; Helena, Montevallo, and Brierfield, Shelby county; and at Blocion. Bibb county. The Warrior |  | | Report (issue) | | meridian of 76° 30', from Tompkins County, N. Y., to Bradford County, Pa., by Henry S. Williams. 1884....Mountains, New Mexico, and on the occurrence of Primary Quartz in certain Basalts, by Joseph Paxson Iddings. 1890...Geographical distribntiou, p. Thickness, p. 130. Quartz-slate, p. 134. Pos- 128. Petrographlcal character...limestone and chert, p. 140. p. 138. 141. The Quartz-Slate Member (Chapter IV. Topographical fea-...feldspathic (piartz-slates, p. 149. scopical character of the biotitic and chloritic quartz-slates, character |  | | Journal (article/letter/editorial) | | gneiss rocks and the stra6fied chlorite and mica slates, which latter do not show any of the concentric...Kingsand and Cawsand. The prevailing rocks are red slates, sandstones, and conglomerates, belonging to the...N.W. direction, corresponding with that of the slates on the west, giving the porphyry the appearance...green crystals of hornblende and some specks of mica. Steatite appears to form a constituent of the base...base, including crystals of quartz and felspar, and occasionally specks of mica and hornblende or schorl |  | | Journal (article/letter/editorial) | | matrix is trachyte, enclosing a large pyramidal quartz crystal, and one face is covered with a vein 4...to Glocker, saccharite incloses pinchbeck-brown mica-scales, small plates of talc, green fibrous hornblende...Banmgarten, contained a large quantity of ronnd quartz grains, together with piagioclase, and a few isolated...a yellowish, reddish, and intensely red colour. Quartz was found t o he the predominating constituent...specimens were found to be a mixture of predominating quartz, with a small quantity of plagioclase, and a small |  | | Journal (article/letter/editorial) | | Corporation of America Mine No. 4, St. Lawrence County, New York T he technological development of mankind...sulfides, and a wide variety of silicates including quartz. Because of its unusually wide distribution, only...famous Tilly Foster iron mine near Brewster, Putnam County (see Cook 2008 and references therein) was the...Essex County; excellent sharp octahedra to 2 cm have been collected at Port Henry in the same county. The...of America’s No. 4 mine at Balmat, St. Lawrence County, is well known for lustrous magnetite crystals |  | | Report (volume) | | meridian of 76° 30', from Tompkins County, New York, to Bradford County, Pennsylvania, by Henry S. "Williams...cents. 16. On the Higher Devonian Faunas of Ontario County, New York, by John M. Clarke. 1885. 8°. 86 pp....57 pi. Price 25 cents. 38. Peridotite of Elliott County, Kentucky, by J. S. Diller. 1887. 8°. 31 pp. 1...Mountains, New Mexico, and on the occurrence of Primary Quartz in certain Basalts, by Joseph Paxson Iddings. 1890..............................._......_.......... Quartz .............................................. |  | | Journal (article/letter/editorial) | | presents the appearance of a fragment of slate or mica-schist. Such patches most frequently have their... which consists essentially of aggregations o f mica, and probably may in most cases have been the first...fragments is of a dark colour, consisting of mica and small quartz-grains, in which white orthoclase crystals...rather fine-grained, white and highly felspathic. The mica, however, is usually dark, and where it exists in...elongated and somewhat flattened nodules of black mica, from half an inch to two inches in diameter ; and |  | | Journal (article/letter/editorial) | | the Suffolk coast and the eastern coast of our county. I.—GEOLOGICAL SURVEY or SOUTH AUSTRALIA, Report...SILURIAN (?).—Limestones, clay-slates and shales, quartzites, calcareous slates, sandstones, siliceous and...conglomeratic limestones. 5. METAMORPHIC.—Clay-slates, mica-slate, and schists with granite dykes. 6. Granite...general direction of strike of the main line of quartz reefs at Waukaringa is about E.N.E., and the clip...varies from a few inches to about 20 feet; the quartz is as a rule of a highly ferruginous character |
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