 | | Report (issue) | | Deposits in Serpentine Rocks Of the Piedmont Upland Maryland, Pennsylvania And Delaware By NANCY C. PEARRE...districts ______ -._-_____-_____-___._. Montgomery County, Md_-_-_---_---_-_-----------_-__--_-_-_Soldiers...descriptions_______________________________________ Montgomery County, Md___-_______________________.__ Etchison mine_____-_-...chromite mine. Index map of the Piedmont Upland, Maryland, Pennsylvania, Page and Delaware__.__________...and small building-stone quarries in serpentine, Maryland and Pennsylvania__________________ 2. Production |  | | Journal (article/letter/editorial) | | SEPTEMBER 1951 PETROLOGY OF THE BALTIMORE GABBRO, MARYLAND BY NORMAN HERZ ABSTRACT The Baltimore gabbro,...chamber are discussed. Differentiation trends of Maryland rocks show absolute enrichment in iron throughout...992 993 995 980 NORMAN HERZ—BALTIMORE GABBRO, MARYLAND Figure Page 13. Statistical diagrams 1003 14...complex.... 1008 15. Differentiation trend of Maryland rocks.. 1011 16. Deuteric and hydrothermal effects...the Piedmont of Baltimore City and County and Howard County of Maryland. No worker has seriously re-examined |  | | Journal (article/letter/editorial) | | Introduction CHROMIUM DEPOSITS of Maryland and Eastern Pennsylvania WINSLOW H. H A R T F O R D Chemistry...Pennsylvania, gold from North Carolina, and chromium from Maryland and Pennslyvania. Because stainless steel and...technology came after the practical exhaustion o f the Maryland chromium ores, the mines are small and many have...at Choate mine, Soldiers Delight, Baltimore County, Maryland. Paul Clifford of Rocks and Minerals editorial... Underneath was the Reed mine, richest of the Maryland mines. These three sites, Bare Hills, Soldiers |  | | Journal (article/letter/editorial) | | isolatedpocketsor "pots" as illustrated at BareHills,Maryland, andHestmand½, Norway,to larger massescontainingmany...Johannsen,Albert, "The Serpentines of Harford County, Maryland," Md. Geol. Surv. x2, x928, p. 242. ORIGIN...the StateLine serpentinebelt of Pennsylvaniaand Maryland were saxonires,dunites,wehrlitesand websterites...specimensfrom SextonPeak, Josephine County,and from Mormon Basin, Baker County, leadshim to the conclusionthat...theComplexis the ore-bringerand it consistsof bronzite and feldspathicbronzitite.9 The characterof the |  | | Report (volume) | | MARYLAND GEOLOGICAL SURVEY VOLUME ONE MARYLAND GEOLOGICAL SURVEY VOLUME ONE BALTIMORE THE JOHNS... President. GOVERNOR OF MARYLAND. KOBEKT P. GRAHAM, COMPTROLLER OP MARYLAND. DAKLEL C. GILMAN, ....... R. W. SILVESTER, Secretary. PRESIDENT OF THE MARYLAND AGRICULTURAL COLLEGE. STATE GEOLOGIST WM. BULLOCK...Excellency Lloyd Lowndes, Governor of the State of Maryland and President of the Geological Survey Commission...Miscellaneous Products 87 The Detailed Study of County Resources 87 The Special Investigation of Road |  | | Report (issue) | | CHROME ORES OF SOUTHEASTERN PENNSYLVANIA AND MARYLAND. By ELEANORA BLISS KNOPF. INTRODUCTION. Chromite...the eastern part of Maryland. Deposits of commercial importance lie along the Maryland-Pennsylvania State...Rising Sun, Cecil County, Md. Another deposit that has been recently worked is in Maryland in the Soldiers...Piedmont district of eastern Pennsylvania and Maryland, in which the chromite deposits are situated,...belt of Pennsylvania and Maryland and of the Soldiers Delight deposit in Maryland. At that time no mines |  | | Book | | UNIVERSITY MARYLAND F, J. PETTIJOHN JOHNS HOPKINS BALTIMORE, UNIVERSITY MARYLAND J. C., REED...COLORADO and KENNETH MARYLAND BALTIMORE, N. WEAVER GEOLOGICAL SURVEY MARYLAND INTERSCIENCE PUBLISHERS...OWENS, James P., 14528 Bauer Drive, Rockville, Maryland 20853. PETTIJOHN, RANKIN, DOE, Bruce, Isotope...Department of Geology, Johns Hopkins University, Maryland 21218. Doucias Baltimore, W., Eastern States...Geology, Johns Hopkins University, Baltimore, Maryland 21218. GWINN, Vinton E., Department of Geology |  | | Report (volume) | | Clay County. Macon County. Jackson County. Transylvania County. Swain County. Haywood County. Buncombe...Buncombe County . Madison County. Yancey County. Mitchell County . Watauga County . Wilkes County. Ashe County...County . Alleghany County . Physiography and ecology of the peridotites. 28 28 29 32 34 35 36 38 42 46...mag¬ nesian rocks. Shooting Creek region, Clay County, North Carolina. Elf dunite. Elf amphibole-peridotite...amphibolite near Marshall. Peridosteatite at the Madison County Home. Peridotites on Ivy River. Carter mine dunite |  | | Journal (article/letter/editorial) | | U' S. Department of Agriculture, Beltsville, Maryland. Suretary: C. S. Hurlbut, Jr., Harvard University...Gabriel, Alton, U. S. Bureau of Mines, College Park, Maryland. Hafi, John C., Colorado School of Mines, Golden...of the series were lormed at Hobart Butte, Lane County, Oregon, probably in Miocene time by hydrothermal...these conclusions are given for the Woodstock, Maryland, granite as a.nalyzed by the writer on the Hurlbut...CONCRETIONS FROM PITTSBI'RGH COAI SEAM' MONONGALIA COUNTY, WEST VIRGINIA WII-DERD. FOSTERAND IIORENCE L. |  | | Book (volume) | | 600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...E, regional deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip...mine⎯pyritized gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason |  | | Book (volume) | | 600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...E, regional deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip...mine⎯pyritized gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason |  | | Book | | Pennsylvania___ _ _ _ 1 _ 2 _ 2 1 CHAPTER 4 Maryland ... 3 CHAPTER 5 Virginia 4 1 CHAPTER 6 West...n g y e l l o w " c o l o r " i n y o u r pan. Maryland: M o n t g o m e r y, Frederick, H o w a r d ...n d a n assortment o f fossils. Photograph b y Maryland Board o f Natural Resources. 2 K e n t u c k...dollars at the noted locality of Cowee Valley, Macon County, North Carolina. An enthusiastic family found and...visited the well known old Rutherford mine in Amelia County, Virginia, and found bright spessartine garnets |  | | Journal (issue) | | town is located near the western edge of Morrill County which is in western Nebraska. Flowing south of...collected are very similar to those from Sweetwater County, Wyoming. These are dear chalcedony with small...east of the little town of Kittery Point in York County. 20 ROCKS AND MINERALS R, ARIZONA STATE FAIR...R. Belsher, Phoenix; the Hillside mine, Yavapai county, Ari• Honorable Mention, Ralph Gabbert, zooa. These...order. When the lightning strikes the vast Oceana County, Michigan, Sand Dunes, it fuses the sand into glass |  | | Book | | Pyroxenes. 27. Fluorite. 5 5 a. Enstatite (Bronzite). 28. Graphite. 6. Hypersthene. 29. The Micas...more of iron. The highly ferruginous known as bronzite, from their bronze-like lustre. , contains from...structure of (1) granite from Sullivan, Hancock County, Maine, (2) micropegmatite from Mount Desert, Maine...an ordinary syenite, (2) and that of Hastings County, Ontario. THE PHONOLITES Phonolite, from the...plagioclase-diallage rocks and (2) Both norites, or plagioclase-bronzite and hypersthene rocks. varieties are further subdivided |  | | Book (volume) | | Dahlonega Co. and Rabum Co., and the McDuffie County Belt extending through portions of McDuffie, Warren...Sphalerite. BALDWIN COUNTY MILLEDGEVILLE, at state farmjasper. BANKS COUNTY COMMERCE, along Hwy. 59...along adjoining Co. linerock crystal. BARROW COUNTY WINDER, along rd. to Jefferson and 1½ mi. inside...Guide for Rock Hounds in the United States BARTOW COUNTY AREA, Saltpeter Cave, as floatjasper. CARTERSVILLE:...agate, (banded, various colors), jasper. BIBB COUNTY MACON: at Holton Quarry, 7½ mi. NWagate; N |  | | Report (volume) | | (Cleveland, jr.). The physiographic features of 'Maryland. Am. Bar. Geog., Bull., vol. 1, pp. 151-157, 242-248..., jr.). The genesis of ore deposits in Boulder County, Colorado. Abstract: Eng. & Mg. Jour., vol. 75...vol. 11, p. 100, 1903. 49 : The veins of Boulder County, Colorado. Eng. & Mg. Jour., vol. 75, p. 334, 1903...characters of the spoduinene obtained from San Diego County, California, and gives to this gem the name of...review of the South Pass gold district, Frernont County, Wyoming. 12pp., 1903. [Privately printed?] Includes |  | | Book | | 1953 THE PORTER CHEMICAL COMPANY Hagerstown, Maryland -•-0-•-0-•-0-•-0-•-0-•-0-•-0-• ◄ HOW TO USE THIS...---------------------EnStatite -----------------------Bronzite -----------------------Hypersthcne --------------------Diopside...boxes. THE PORTER CHEMICAL COMPANY Hagerstown, Maryland USE OF APPARATUS MEASURING ( CHEMICALS •••...Survey) Chester County, Pa.: Alabama; Texas; Montana: Humbolt County, Nevada; Beaver County, Utah; Loudon...~unty, Virginia; Wake County, North Carolina; Albany County, Wyommg; and Kern County, California. Natural |  | | Report (volume) | | Delaware County, Pa., through Foote & Co. Orthoclase A and orthoclase B were from San Diego County, Cal....much as 0.0584 gram. Orthoclase from San Diego County, Cal., ground for four hours, precipitated 0.0268...conditions being the same. Orthoclase from Delaware County, Pa., precipitated 0.0469 gram copper; ground a...SULPHATE. Experiments. Orthoclase A (from San Diego County, Cal.), containing 11.98 per cent K20, 3.32 per...MINEBALS AND WATEK SOLUTIONS. Orthoclase B (San Diego County, Cal.), containing 8.26 per cent K20, 4.38 per |  | | Book (edition) | | (approx. becomes rounded 1300° C; 2372° F) 6. "Bronzite" In the blowpipe only the finest becomes rounded...a mineral was discovered (benitoite, San Benito County, California), or dedicated to a scholar (dolomite...from the Keweenaw measuring Peninsula (Lake USA) where masses weighing up to 400 metric tons and...Arizona (USA) and in the manganese skarns of Langban (Sweden) and Franklin, New Jersey (USA). Dendrites...Redbeds, Colorado (USA). The largest blocks are from Aspen, Colorado balt, (USA), where one weighing |  | | Report (volume) | | of Kentucky Geol. Survey County Rept. - Kentucky Geological Survey County Report. University of Kentucky...Analysts. Houston, Tex. Los Angeles County Mus. Contr. Sci. - Los Angeles County Museum Contributions in Science...Science. Los Angeles County Museum of Natural History. Los Angeles, Calif. Los Angeles County Mus. Nat. History...History Quart.- Los Angeles County Museum of Natural History Quarterly. Los Angeles, Calif. Louisiana Water...Scotia, Canada. Maryland Geol. Survey County Geol. Map Geologic Map. Baltimore, Md. Maryland Geol. Survey |  | | Book | | The Basin and Range Province of the south-west USA (right) formed in this way. and also when what are...the late 1980s, seismic surveys of the Helens, USA, in 1980! The Traps’ sea floor began to reveal even...and boundary (see Inside the Earth, this western USA, which erupted 175,000 covers nearly 5 million sq...rock about 16 million years ago. Others of the USA. This enormous Igneous to create huge quantities...Convection makes material circulate north-west USA and Scotland, fjords in years, while material in |  | | Report (issue) | | biotite in some gneisses from Mason Mountain, Macon County, N.C --------------------8. ~mong minerals of some...e-graphite gneisses from Mason Mountain, Macon County, N.C. TABLE [Mineral percentage established by...X High-grade gnei-ss from Mason Mountain, Macon County, North Carolina TABLE 0 Charnockites of Madras...present in mafic granulites near Franklin in Macon County, N.C., and presumably elsewhere. In more -silicic...metamorphic rocks from the Franklin area of Macon County, N.C. A, Rutile (R) with pyroxene (P), pale amphibole |  | | Book (edition) | | the blowpipe flame. carcely fusible at all. 6. Bronzite. The color of the flame is an important character...near Borax Lake, in Califoinia ; Inferno, Humboldt County, Nevada, , abundant. The sulphur of commerce is...region, and in the mines of Aurora, Esmeralda County, Nevada. Tins ore affords much of the antimony...with in Rutherford County, North Carolina; Hall County, Georgia also Franklin County, North Carolina in...also in Clierokee Ravine, Butte County, Forest Hill in El Dorado County (one weighing nearly 5 *62 grains) |  | | Book (edition) | | springs in Columbia county, New York, and a region in the to,vn of Hoosic, Rensselaer county, afford large...gas. There is another locality at Canoga, Seneca county, where the ,vater is in violent ebullition from...Blue Ridge at Warm and Hot Springs; in Buncombe county, N. C.; and on the Washita in Arkansas. At Bath...been met with, in Rutherford county, North Carolina, (fig. 4,) and Hall county, Georgia. The original rock...bituminous coal of the Portage railroad, Cambria county, Penn., he obtained l 8·2 per cent. of volatile |  | | Book (edition) | | springs in Columbia county, New York, and a region in the town of Hoosic, Rensselaer county, afford There is...at large quantities of this gas. Canoga, Seneca county, where the water is in violent ebulthe earth, ...at Warm and Hot Springs in Buncombe At Bath, in county, N. C. and on the Washita in Arkansas. lition ...been met with, in Rutherford county, North Carolina, (fig. 4,) and Hall county, Georgia. The original rock...bituminous coal of the Portage railroad, Cambria county, Penn., he obtained 18'2 per cent, of volatile |
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