 | | Journal (article/letter/editorial) | | Figure I : Map of the (handler mine, Raymond. Rockingham County, New Hampshire (after Page and Larrabee...manganese phosphates. Minerals of the CHANDLER MINE A ZONED, LITHIUM-RICH dump* PEGMATITE C A R L...Massachusetts 02138 mond district. The reopening of the mine in 1979 by the Chandler Mining Company, described...D L E R M I N E IN R A Y M O N D , Rocking ham County, New Hampshire, is an open pit in a granite pegmatite...a Harvard mineralogy class visited the Chandler mine in May of 1981, and the writer visited again in |  | | Journal (article/letter/editorial) | | Geological Sciences, University of North Carolina, Chapel Hill, NC 27599-3315, USA e-mail: Breck.Johnson@anadarko... 1201 Lake Robbins Dr, The Woodlands, TX 77380, USA required late growth of K-feldspar, explains the...1979; Kistler et al. 1986; Bateman et al. 1988; Higgins 1999; Gray 2003; Coleman et al. 2004; Gray et al...locations (green triangles) for data in (Fig. 5) USA 119o 34' 38o 11' CA 119o 10' 38o 11' TUOLUMNE...by textural coarsening (Higgins 1999). Using crystal size distributions, Higgins (1999) suggested that |  | | Journal (article/letter/editorial) | | The recent reopening of the mine has rekindled interest in the mineralogy of this pegmatite. Recent...Recent Activity at the CHANDLER MINE RAYMOND, NEW FRANK LAVOIE Box 529 Epping, New Hampshire T H E M A J...phosphate-rich. Several, including the Palermo #1 mine in North Groton (Segeler et al., 1981), are highly mineralized...type of pegmatite is the Buzzo or Parker Mountain mine in Center Strafford which produced spectacular examples..."cymatolite" pseudomorphs after spodumene. The Chandler mine is a lithium silicate pegmatite, noted for its specimens |  | | Report (issue) | | Pegmatite& in the stream bed of Toonlgh Creek, Cherokee County. THE GEOCHEMISTRY AND ORIGIN OF PEGMATITES CHEROKEE-PICKENS................................. . 41 The Cochran Mine ........................ . ........................................................ .47 The Cagle Mine .................................................... . . ... .................... 50 The Amphlett Mine ....... . .............................................................. . ...... 50 The Wacaster Mine ... .. .. . . .. ...... . ................. ... |  | | Report (issue) | | chartoflithologic units in Alabama, Georgia and South Carolina . . . . . . . . . . . . . . . . . . . . . . ..... 31 9. Modal analyses of felsic igneous rocks north of the Brevard fault zone . . . . . . . . . . ....Austell, Sand Hill, Kennesaw and Dallas gneisses north of the Brevard zone. The oldest rocks present in...rocks that have many similarities to lithologies north 1 To produce a geologic map of an area as large...10911 0111 11211311411 511611711B119120- Rome North Shannon Adairsvi lie White West White East Waleska |  | | Journal (article/letter/editorial) | | Nebo Granite is composed mainly of quartz and perthite, with lesser plagioclase, and usually interstitial...ordering in alkali feldspars; increasing quartz and perthite contents; decreasing plagioclase and hornblende...mapping of the granites around the Zaaiplaats Tin Mine. He recognized that his 'Main granite', now called...upper part. Tin mineralization at the Zaaiplaats Mine occurs within a deep red medium- to coarse-grained...equigranular rock, composed mainly of quartz, perthite, and hornblende. Although usually grey, it becomes |  | | Journal (article/letter/editorial) | | Sciences, University of Chicago, Chicago, I1 60637, USA Abstract. Sapphirine-bearing granulites, together...State (Griffin et al. 1979; Lock 1980) and the area north of Victoria West, Cape Province (Robey 1981). The...metasediment xenoliths in the kimberlite of the Voorspoed Mine, Kroonstadt district, which is on the craton (Hawkesworth...the post-Jurassic kimberlite of the Lace or Crown Mine 27~ 27~ one of a small group of kimberlites situated...from the old mine dumps. There is no previous detailed work on xenoliths from Lace Mine; early reports |  | | Book | | Part 1: North and South America Alkaline Rocks and Carbonatites of the World Part 1: North and South...Alkaline rocks and carbonatites of the world. Pt. 1, North and South America 1. Alkalic igneous rocks I. Title............................................. 4 NORTH AMERICA Canada.................................... The catalogue is to consist of four parts: 1 North and South America (including Greenland) 2 Africa...Verlag, Berlin. 252 pp. DEANS, T. 1966. Economic mine ralogy of African carbonatites. 111 O . F. Tuttle |  | | Journal (article/letter/editorial) | | MICHAEL W. HIGGINS U.S. Geological Survey, Agriculture Research Center, Beltsville, Maryland 20705 Age...correlated with some metavolcanic rocks in the Carolina slate belt. In Maryland, these rocks are named...pdf by Univ Nebraska Lincoln user 990 M. W. HIGGINS clastic rocks were probably deposited in a basin...pdf by Univ Nebraska Lincoln user 992 M. W. HIGGINS Conglomerate and the Peach Bottom Slate. Because...farther south, in the Great Smoky Mountains along the North CarolinaTennessee border, the Ocoee Series forms |  | Tegner, C., Storey, M., Holm, P.M., Thorarinsson, S.B., Zhao, X., Lo, C.-H., Knudsen, M.F. (2011) Magmatism and Eurekan deformation in the High Arctic Large Igneous Province: 40Arâ39Ar age of Kap Washington Group volcanics, North Greenland. Earth and Planetary Science Letters, 303 (3) 203-214 doi:10.1016/j.epsl.2010.12.047 | Journal (article/letter/editorial) | | Arâ39Ar age of Kap Washington Group volcanics, North Greenland C. Tegner a,â, M. Storey b, P.M. Holm...Sciences, University of California, Santa Cruz, USA e Department of Geroscience, National Taiwan University...feldspar and whole-rocks from trachyte ïŹows. Patch perthite feldspars and coeval resetting of RbâSr isotopes...eastwards displacement of Greenland relative to North America. The alkaline suite, therefore, may be unrelated...Greenland, pushing Greenland northwards relative to North America. The tectonic setting in the High Arctic |  | | Report (issue) | | UNEAMENT NEAR ATLANTA, GEORGIA by Michael W. Higgins LETTER OF TRANSMITTAL Department of Mines, Mining...Lineament near Atlanta, Georgia," by Michael W. Higgins. The report is the expansion of work done for a...nicols crossed, x 32. From an outcrop near the Cobb County sewage disposal plant on the Chattahoochee River...From an outcrop about 3 miles south of the Fulton County Airport. ______________ _ 29 Blastomylonite,...phyllonite on the right; 2 miles south of the Fulton County Airport. ________ --------------------------------------------- |  | | Report (issue) | | C. A. Michael. COLD NUGGET FROM SPOTSYLVANIA COUNTY: Longest dimension approximately 13 cm., photograph...updated âcheck listâ just alluded to, (2) a county-by-county listing of the minerals, and (3) resumes of...express my deep gratitude. To Professor R. S. Mitchell of the Uni versity of Virginia and to the several...(Haydcnitc) 9 Virginia Mineral Localities by County This list is included for possible aid in planning...listed only* if localities arc given for them. The county lists do not include com mon rock-making materials |  | | Report (issue) | | Cover photo: Mil8ing PDant, Parks GoUd Mine, McDuffie County, Georgia. Photo courtesy Georgia Department...District. ......... ,........................ Greene County................................................................................ Lincoln County ................................................................................ McDuffie County ................................ ·.............................................. Oglethorpe County ................................ : ............................. |  | | Report (issue) | | Contents Block-in-matrix structures in the North Carolina Blue Ridge belt and their significance for...McKinney Tectonic mĂ©lange at Chunky Gal Mountain, North Carolina Alfred J. Lacazette, Jr., and Nicholas Rast...Appalachians .......... 00. cc cence eee eeens Michael W. Higgins, Ralph F. Crawford, III, Robert L. Atkins, and...of the Morgan Run Formation (of debated age) and Mine Run Complex, some of which contain possible ophiolite...in the Carolinas and Georgia, that border the Carolina terrane as defined by Secor and others (1983); |  | | Journal (article/letter/editorial) | | region of the Grenville Province, Canada Michael D. Higgins a, Otto van Breemen h a Sciences de la Terre...with a 40 to 60 m.y. gap between the intrusions (Higgins and van Breemen, 1992; Hervet et al., 1994; Fig...reserved SSDI 0301-9268(95)00102-6 328 M.D. Higgins, O. van Breemen / Precambrian Research 79 (1996)...separated from the mantle around 1.53 Ga (Dickin and Higgins, 1992). The earliest documented magmatism in the...et al. (1989). AC = anorthosite complex. M.D. Higgins, O. van Breemen / Precambrian Research 79 (1996) |  | | Journal (article/letter/editorial) | | lamellae at grain rims. The proportion of patch perthite increases in more leucocratic samples. Feldspars...KOngn~t samples have a higher proportion of patch perthite than samples from Nunarssuit with a similar content...(and simultaneous Si and A1 ordering) a braid perthite is produced. This process can occur down to temperatures...fluids braid perthite may coarsen to produce incoherent or semi-coherent patch perthite; associated with...which give the feldspar a turbid appearance. Braid perthite sometimes coarsens at the edge of crystals to |  | | Report (issue) | | province in North Carolina and Tennessee, as well as smaller gneiss domes of Tennessee, North Carolina and Georgia...domes of Maryland; and the Sauras Massif of North Carolina. Still farther east are the isolated Grenville...Appalachiansâthe real boundary between the craton of North America and that of the AfricanEuropean mass with...opposing cratons, e.g., the Grenville rocks of the North American craton from probably more ancient Precambrian...discovery of 2-billion-year or older rocks in eastern North America or, alternatively, Grenville rocks |  | Kirkpatrick, R. James, Kinsey, Robert A., Smith, Karen Ann, Henderson, Donald M., Oldfield, Eric (1985) High resolution solid-state sodium-23, aluminum-27, and silicon-29 nuclear magnetic resonance spectroscopic reconnaissance of alkali and plagioclase feldspars. American Mineralogist, 70 (1-2) 106-123 | Journal (article/letter/editorial) | | samplesdiscussedhere include low albite, microline perthite, cryptopenhite, sanidine, a range of plagioclase...k4) Nomay) 01lgocla6e ( An23 ) Bakersvllle, North Carollna -47 -93.2 - 9 7. 2 - 105.3 Labradotlte...perthites when cooled slowly enough. Cryptoperthite is perthite in which the intergrowth occurs on a submicroscopic...to exponential multiplication. (B) Microcline perthite (Delaware Co., Pennsylvania), 2.3 kHz MASS, 3000scansat...synthetic glass. (A) Oligoclase (Bakersviile,North Carolina),2.7 kHz MASS, E2 scansat 300 sec recycle time |  | | Journal (article/letter/editorial) | | Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3315, USA e-mail: afg@unc.edu... Johnson Anadarko Petroleum, The Woodlands, TX, USA from exsolution of anorthite and must represent...Slightly weathered, glacially polished slab 800 m north of Pywiack Dome, showing well-defined megacrysts...contain 0â5 vol% sanidine (Clavero et al. 2004; Higgins 2011a, b). Other dacites with bulk compositions...Tuff, Colorado, XHfluid 2O c Mt. Airy Granite, North Carolina, variable water content (Whitney 1988). For |  | | Book (volume) | | instance, a single Spodumene crystal from the Etta Mine near Keystone on the east side of the Mount Rushmore...beds, excavations, etc.ïŸSelenite roses. BRULE COUNTY AREA: in the Oacoma zone of the Pierre Fm. On Elm...ïŸgray Barite rosette up to 5 or 6 inches. CAMPBELL COUNTY MOUND CITY, W to the Missouri R., regional hillsides...gravels, etc.ïŸpetrified wood, wood opal. CORSON COUNTY LITTLE EAGLE: ï area ridges, slopes, stream beds...Hounds in the United States CUSTER COUNTY AREA: The November Mine, 1.2 mi. SE of the Needles Eye Tunnel |  | FRANÄK, J., SCHULMANN, K., LEXA, O., ULRICH, S., Ć TĂPSKĂ, P., HALODA, J., TĂCOVĂ, P. (2011) Origin of felsic granulite microstructure by heterogeneous decomposition of alkali feldspar and extreme weakening of orogenic lower crust during the Variscan orogeny. Journal of Metamorphic Geology, 29 (1) 103-130 doi:10.1111/j.1525-1314.2010.00911.x | Journal (article/letter/editorial) | | preservation of lattice orientation of the parental perthite crystals are all explained by a discontinuous...plagioclaseâgarnet-dominated bands (Fig. 4a,b). Large perthite porphyroclasts, up to a centimetre in diameter...electron 1 0 8 J . F R A N EÌ K E T A L . (a) perthite porphyroclasts were oriented with respect to the...preserved in pressure shadows of perthite porphyroclasts. Large perthite porphyroclasts with numerous lensoidal...shape. Garnet (up to 1.2 mm across) enclosed in perthite is euhedral and is commonly surrounded by a thin |  | | Journal (article/letter/editorial) | | Earthâs crust, including the REEs and actinides (HIGGINS and RIBBE, 1976; FLEISCHER, 1978; EXLEY, 1980;...using a variety of analytical techniques (e.g., HIGGINS and RIBBE, 1976; FLEISCHER, 1978; HENDERSON, 1980;...investigated the crystal chemistry of titanite (e.g., HIGGINS and RIBBE, 1976; EXLEY, 1980), partitioning of...AECL) Underground Research Laboratory, about IO km north of Pinawa, Manitoba, Canada (J. J. Cramer, 1991...3 Renfrsw County Ontario 4 Westport Kingston area Ontario pegmatite 5 Lanark County Ontario 6 |  | | Report (issue) | | Proterozoic tectonic evolution of the Grenville orogen in North America Edited by Richard P. Tollo Department of...George Washington University Washington, D.C. 20052 USA Louise Corriveau Geological Survey of Canada GSC-QuĂ©bec...Skidmore College Saratoga Springs, New York 12866 USA Mervin J. Bartholomew Department of Earth Sciences...Tennessee 38152 USA Memoir 197 3300 Penrose Place, P.O. Box 9140 â Boulder, Colorado 80301-9140, USA 2004 MWR197...Place, P.O. Box 9140, Boulder, Colorado 80301-9140, USA. Copyright is not claimed on any material prepared |  | | Journal (article/letter/editorial) | | Tasmania, Hobart, Tasm. 7001 (Australia) LITHOS 0 Higgins, N.C., Solomon, M. and Varne, R., 1985. The genesis...groundmass orthoclase perthite megacrysts and groundmass orthoclase perthite megacrysts and groundmass...granitoids. Unpublished K/Ar biotite data (N.C. Higgins) indicate that biotite ages from older granitoids...7105 -+ 36 Ansons Bay pluton all d a t a south north 3 6 7 -+ 3 0 3 7 0 -+ 5 366 + 26 375.1 0.7136...Williams (1982). Samples 29, 43 and 52 from the Anchor Mine area are from Ross (1982, 1983). Samples collected |  | | Journal (article/letter/editorial) | | the regional dyke swarm. Other intrusions further north along the Greenland coast which post date Tertiary...but typical rocks are composed essentially of perthite and minor quartz; they are coarse grained and...activity around 53 Ma on the eastern margin of the North Atlantic but post-dates the major phase of early...Sea and the North Atlantic indicates a major change in the spreading geometry of the North Atlantic region...of Kialineq Rocks 522: Granite/Quartz Syenite. North end of St. Tindholm Island. Medium-grained, light |
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