 | | Report (issue) | | DESCRIPTIVE MINERALOGY OF PENNSYLVANIA 104 Na 2Al 2 Si3 Oi .2H 2 O; SiO 2 47.4, A1 2 O 3 26.8, Na...Na 2 O 16.3, Lenni, Delaware County. Crystals. Eyerman, 1911, 11. Composition: Analysis: Fe 2 O3 CaO...Sp.gr LOCALITIES: Berks County: Birdsboro, and Gickerville; Delaware County: Leiperville, Lenni (druses...colorless crystals), Felton's farm (Chester), and Ward's quarry; Montgomery County: Sumneytown, and Perkiomenville...Philadelphia: Fairmount Park, Frankford, and Rit- enhouse quarry. SCOLECITE CaAl 2 Si3 Oi .3H 2 O MONOCLINIC |  | | Report (issue) | | OF THE DOE RUN AND AVONDALE REGION, CHESTER COUNTY, PENNSYLVANIA. By ELEANORA F. BLrss and ANNA I. JoNAS...The region discussed in this paper lies in Chester County, Pa., and is included in the eastern half of...showing location of Doe Run' and Avondale region, Chester County, Pa. line schists and gneisses . of the Piedmont...by the First and Second geological surveys of Pennsylvania are somewhat similar to each other. H. D. Rogers...schist." t Pennsylvania First Geol. Survey Rept., vol. 1, pp. 66-82, 122-183, 1858. z Pennsylvania Second |  | | Journal (article/letter/editorial) | | MINERAL ISOGRADS IN SOUTHEASTERN PENNSYLVANIA Hucn McKrNSrRy, H araaril IJniaersity, Cambrid.ge, M...covered by the Philadelphia and Coatesville-West Chester Folios showing reported and observed occurrences...broader picture of 1 Harker, Aifred, Metamorphism. London, Methuen and Co. (1932),p. 187. 2 Barth, T. F...., Structural and petrologic studies in Duchess County, New York, Pt. II: G. S. A. Bulletin,47,775-850... 36 (1948); also Harker, Alfred, Metamorphism, London: Metluen and Co. L t d . ( 1 9 3 2 ) ,p . 1 8 8 |  | | Book (edition) | | explained on pages 31, 32. In figure 3, under Tourmaline, ,ve have an instance of a hemihedral modification...Greek pur, fire, and electric. If a prism of tourmaline, after being heated, be placed on a delicate...delicately suspended magnetic needle. The prisms of tourmaline have different secondary planes at the two extremities... especially boracite and topaz, ,vhich, like tourmaline, are hemihedral in their modifications. Boracite...gems 1 Whnt is D pyro-electric 7 What is said of tourmaline 1 ,vhat of topa1. and borncite 1 SPECIFIC GRAVITY |  | | Book (edition) | | explained on pages 31, 32. In figure 3, under Tourmaline, ,ve h,a ve an instance of a hemihedral modification...Greek pur, fire, and electric. If a prism of tourmaline, after being heated, be placed on a delicate...delicately suspended magnetic needle. The prisms of tourmaline have different secondary planes at the two extremities...gems 1 What is n pyro-electric 1 What is said of tourmaline 1 ,vhat of topn1. and boracite ? SPECIFIC GR...springs in Columbia county, Ne·w York, and a region in the town of Hoosic, Rensselaer county, atroi·cl larg |  | | Journal (issue) | | Contents for July. A ug ust, 1949 CHIPS FROM THE QUARRY ................................................. 338 R OCKS AND MINERALS CHIPS ~_, ROM 1,HE QUARRY ----------------------------,----CLUB PUBLICATIONS...in the first place. And if you want to know the county (foreign money orders demand it), it is Westchester...east of Asheboro, in the southern part of Randolph County, North Carolina, is a prominence that rises above...utilized the surrounding country rock. A small quarry and a few concrete pillars identify tbe site. This |  | | Report (issue) | | schist of the Doe Run and Avondale region, Chester County, Pa., by E. F. Bliss and A. I. Jonas (published...Contributions to the geology and paleontology of San Juan County, N.Mex.: (P) 1. Stratigraphy of a part of the Chaco·River...The reef-coral fauna of Carrizo Creek, Imperial County, Cal., and its significance, by T. \V. Vaughan...Avondale region, Chester County, Pa ................................ . II. A, Quarry in Shenandoah limestone...limestone, 1! miles southeast of Doe Run, Chester County, Pa.; B, Secondary folds on limb of anticline |  | | Book (edition) | | 1945 TO w. w. w. MADE AND PRINTED IN CHEAT BRITAIN FOR PENGUIN BOOKS LIMITED, BY RICHARD CLAY AND...PRINTED IN GREAT BRITAIN BY HARRISON AND SONS LTD. 44-47, ST. MARTIN'S LANS, LONDON, w.c.2, PRINTERS...SCENERY IV. EPITOME OF THE GEOLOGICAL HISTORY OF BRITAIN V. THE CONSTRUCTION AND USE OF GEOLOGICAL MAPS...for Oil for fig. 30); and John Wiley and Sons (Nevin's Structural Geology for fig. 3). Plate IV is from...original of Plate V; the Manager, Penrhyn Slate Quarry, for Plate VI; Mr. D. W. Phillips (Safety in Mines |  | | Report (issue) | | ----------------------------51 THE TERRANES OF ORANGE COUNTY, VERMONT, C. H. Richardson -----------6i Topog.............. Plate IX. Geological Map of Orange County, C. H. Richardson................ Plate IXA. Smaller................................. Plate XV. Slate Quarry, Northfield, C. H. Richardson, Photo ............Limestone, C. H. Richardson, Photo. .... Plate XIX. Quarry of Washington Limestone, C. H. Richardson, Photo...Photo......... Plate XXI. Blue Mountain Granite Quarry, Ryegate, C. H. Richardson, Photo. Plate XXII. |  | | Report (issue) | | States ,- 30 Age of the "ribbon rock" of Aroostook County, Maine, by Louis Pavlides, Robert B. Neuman, and...----------------35.' Iron ores of St. Lawrence County, northwest Adirondacks, N.Y., by B. F. Leonard...with depth in anthracite mine-water pools in Pennsylvania, by Wilbur T. Stua~t and Thomas A. Simpson ...drilling in depressions on the High Plains, Lea County, N.Mex., by John S. Havens__ 53.· Lower member...alteration and shearing at Red Mountain, Clear Creek County, Celo., by P. K. Theobald,· Jr., and C. E. Tho |  | | Book | | a division of John Wiley & Sons, Inc. New York London Sydney Toronto Framingham State College Framingham...)-Northern Ireland-Donegal (County) 2. Granite-Northern Ireland-Donegal (County) I. Berger, Antony R., joint...mostly f ron1 In1perial College and King's College, London, and from the University of Liverpool. They include...revise many of the one-inch geological sheets of the County. Sheets Nos. 3, 4, 9, 10, 15, and 23 are complete....financial assistance from the Universities of London, Liverpool, and Toronto, and from the Leverhulme |
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