 | | Report (issue) | | Pleaoc teturn this publication to the Virginia Geologieal Survcy whcn you havc no further uce for it...COMMONWEALTH OF VIRGINIA STATE COMMISSTON ON CONSERVATION AND DEVELOPMENT VIRGINIA GEOLOGICAL SURVEY...Deposits of Virginra BY ARTHUR A. PEGAU UNIVERSITY, VIRGINIA 1932 COMMONWEALTH, OF VTRGINIA STATE COMMISSION...COMMISSION ON CONSERVATION AND DEVELOPMENT VIRGINIA GEOLOGICAL SURVEY ARTHUR BEVAN, State Geologist Bulletin...33 Pegmatite Deposits of Virginia BY ARTHUR A. PEGAU UNIVERSITY, VIRGINIA 1932 RICHMOND: DrvrsroN |  | | Report (issue) | | pegmatite in granite, Short Tom Smith mine, Rockingham County, N. C______ ____ ____________________ _______________________...pegmatite and granite, E. R. Self mine, Gaston County, N. C____________________ 6. Sinuous discordant...bulge in the hanging wall, Knight mine, Rockingham County, N. C- ~ -7. Sharp hanging-wall contact, Knight...granite underlain by schist, Hawkins mine, Stokes County, N. C _ _ _ _ _ _ __ _ _ __ _ _ _ _ _ 9. Same granite...and other units in the Big Bess pegmatite, Gaston County, N. C _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ |  | | Journal (article/letter/editorial) | | VIRGINIA MINERAL LOCAL INDEX Although perhaps best known for its turquoise crystals, apophyllite on...kyanite, Virginia has, in fact, over 150 mineral species. and D. A L L E N P E N I C K , JR. Virginia Division...Mineral Resources P. O. Box 3667 Charlottesville, Virginia 22903 T H I S V I R G I N I A M I N E R A L L...world-wide locality index. The localities are listed by county, followed by a listing of the most prominent minerals...source of information in this Virginia index was Minerals of Virginia (1970) by R . V . Dietrich. A l |  | | Report (issue) | | Wilmington Wilmington, N.C. William S. Henika Virginia Division of Mineral Resources Charlottesville.... . . . . . . . . iii Sandy Level Quadrangle, Virginia: Its Geology and Regional Interpretation (C.R.... 7 Metamorphic Gradients in Pittsylvania County, Virginia (J. P. Gregory). . . . . . . . . . . . . ... 49 Cataclastic Zone Associated with the Davie County Triassic Basin (D. V. Milton). . . . . . . . ....from the Dan River (North Carolina) - Danville (Virginia) Basin (E. I. Robbins and A. Traverse). . . . |  | | Journal (issue) | | February 1987 No.1 VIRGINIA MINERAL LOCALITY INDEX D. Allen Penick, Jr. This Virginia mineral locality...world-wide locality index The localities are listed by county, followed by a listing of the most prominent minerals...source of information in this Virginia index was Minerals of Virginia (1970) by R. V. Dietrich. Although...of the index. Some of the famous localities in Virginia, such Updated from Rocks and Minerals, Vol. 60...pegmatite in Amelia County and the Lynch Station locality (turquoise crystals) in Campbell County, are now closed |  | | Report (issue) | | the cover—Turquois crystals from Lynch Station, Virginia; x ca.; pho tograph by Neal Ycdlin; color plates...C. A. Michael. COLD NUGGET FROM SPOTSYLVANIA COUNTY: Longest dimension approximately 13 cm., photograph...of Virginia R. V. DIETRICH* Professor of Geology and Associate Dean of Arts & Sciences, Virginia Polytechnic...Polytechnic Institute Research Division Bulletin 47 Virginia Polytechnic Institute, Blacksburg, Va. 24061 *... © R. V. Dietrich and the Research Division of Virginia Polytechnic Institute, 1970 Printed and bound |  | | Report (issue) | | general information on a number of mines in Grafton County and extended other kindnesses; M. M. Kilton, of...Howard, of East Alstead; in Virginia by P. Lippert and Capt. McCray, of the Ridgeway Mica Co., and several...however, a variety of plagioclase, either albite or oligoclase, makes up part or all of the feldspar component...with the opening of the Ruggles mine in Grafton County, N. H., about 1803. Later other mines were opened...Cheshire County northward into Sullivan County and the northwestern part of Merrimack County and east |  | | Journal (article/letter/editorial) | | the similarity of the majority to clasts in the Ridgeway Conglomerate of Dyfed. Dixon (in discussion. Heard...formation? It can now be shown that the L1anishen and Ridgeway Conglomerates differ significantly in clast composition...Lower Old Red Sandstone. is correlative with the Ridgeway Conglomerate (see Allen, 1965a, 171), for which...chiefly oligoclase and a little sanidine in the quartz-rich rocks. and andesine with oligoclase in the...pilotaxitic groundrnass of subparallel feldspar laths (oligoclase, some sanidine) and generally pseudomorphous |  | | Journal (issue) | | the Virginia Polytechnic Institute, Engineering Experiment Station Series, dealing with Virginia Mineral...Mineral Localities: Virginia Mineral Localities (1960 Edition) Virginia Mineral Localities (Supplement...(Supplement I) Virginia Mineral Localities (Supplement II) Virginia Minerals and Rocks (3rd Edition) Ex LIBRIS...\I i! II II BULLETIN OF THE ·, I !V I ii VIRGINIA POLYTECHNIC INSTITUTE Engineering Experiment Station...Series No. 151 Ii !I ·1 " ii :c H I I I I ! VIRGINIA MINERAL LOCALITIES ( SUPPLEMENT II ) By Richard |  | | Journal (article/letter/editorial) | | constituentspredominatinglocally. Of the feldspars, oligoclase(An 22 to 30) appearsmost abundantly,and potash...and magnetite. Fine-9rainedFoliates.--A few oligoclase-quartz dikes,with muscoviteand very smallamountsof...comparedwith themare the smallirregularveinsof coarser oligoclase(An •5) and quartz, occurringin massivequartz...It will be seenthat a majority of the calcic-oligoclase pegmatitescontain little or no' potash feldspar...Possible. Diag. Calcic Oligoclase Muscovite Quartz Diag. Calcic Oligoclase Quartz Perthite Muscovite |  | | Report (volume) | | of South Carolina By WILLIAM C. OVERSTREET and HENRY BELL III GEOLOGICAL SURVEY BULLETIN 1183 Relation...rocks________________________________________ Oligoclase tonalite_ ____ __ ____ ____ ________ ____ ___...OF SOUTH CAROLINA By WILLIAM C. OVERSTREET and HENRY BELL III ABSTRACT A provisional geologic map of...1965), we reviewed the report and soil map of each county and made an overlay to show the major rock types...believe gave rise to the various soil series. In each county the rock type that underlies a particular soil |  | Wei, Hao, Xu, Jiuhua, Zhang, Guorui, Cheng, Xihui, Chu, Haixia, Bian, Chunjing, Zhang, Zeyang (2018) Hydrothermal Metasomatism and Gold Mineralization of Porphyritic Granite in the Dongping Deposit, North Hebei, China: Evidence from Zircon Dating. Minerals, 8 (9) 363 doi:10.3390/min8090363 | Journal (article/letter/editorial) | | example, the ore-forming rock body of the Kadia Ridgeway Minerals 2018, 8, 363; doi:10.3390/min8090363...example, the ore‐forming rock body of the Kadia Ridgeway copper‐gold deposit in Australia is an alkali‐...accounts for about 50%, plagioclase (albite, oligoclase) accounts for about 20%; dark mineral content...orthoclase) of 70% to 85%, plagioclase (albite, oligoclase) of 5 to 15%; generally dark minerals account...tiny plagioclase plagioclase (Pl), containing oligoclase, ZK301A, 283.5 m; (D) quartz phenocryst in the |  | | Journal (issue) | | on limestone along r~:t~JQ.\{t;_t:l'!'P_erland County, 5 miles southwest of Carlisle. Photo courtesy~'of... Greene County, with 12 major underground mines planned, may become the "numero uno" county for coal...headquartered at the U.S. Geological Survey in Reston~ Virginia. The NCIC is specifically dedicated to hunt for...A wooded area southeast of Colebrook in Lebanon County contains a unique geologic feature. An unusual...- Located in the woods north of Lawn in Lebanon County is this unusual example of the weatheri ng of diabase |  | | Journal (article/letter/editorial) | | al. 1982 Calaveras County, CA; gash veins in metamorphic rock GRR1280 oligoclase Ab67An25Or8 not determined...Black Rock Pass, Nevada; basalt Harvard Min. oligoclase Mus.81228 GRR580 Ab82.0An16.4Or1.6 0.04 FeO...3250, 3061 2075 5.19 2.58 oligoclase, Black Rock Pass, NV oligoclase, SC OH 3100–3200, 3425 3979...spectra of the feldspars. The mid-IR spectra of the oligoclase samples (GRR1280 and GRR580), andesine, and anorthite...maximum intensities closest to the a axis (X in oligoclase and andesine, Y in anorthite). The Y and Z optical |  | | Journal (article/letter/editorial) | | and NW of Mt. Ophir (Ball 1901; Dunstan 1911; Ridgeway 1936). Recent exploration has concentrated on...from "extragranitic" environments (Fig. 6, cf. Henry and Guidotti 1985). The most Mg-rich compositions...from that of tourmalines in granites (b) (after Henry and Guidotti, 1985) A/2.Fe s Mg .... Petrographically...lower fluid P C O 2 . These assemblages include oligoclase ( ~ An 15), amphibole (ferro-actinolitic hor...the adit N of Mt. Ophir which was described by Ridgeway (1936). Although these were not the primary targets |  | | Journal (article/letter/editorial) | | Occurrence in Carroll County, Georgia" (November/December 1988). Banks County 184 ROCKS & MINERALS...Bentley provided many of the photographs. Baldwin County Milledgeville district—between the State Sanitarium...pit—east of S.R. 243 near the Baldwin-Wilkerson County line: kaolinite (Martin and Stafford, 1972). Cheatham...property—Route 3, Commerce, 4.8 km from the Jackson County line, 8 km east of Commerce on S.R. 59, and 0.8...[University of Calgary] at 09:55 07 August 2017 Barrow County Arnold mine—1.6 km northeast of Statham, near the |  | | Journal (article/letter/editorial) | | Geology and ore deposits of the Alma district, Park County' . e o l .S u n e y , B u l l . 3 , p . 4 6 , t...Buckfield, Maine' made in the Amelia district in Virginia where a few pegmatites have been worked to a depth...pegmatites of the Amelia, Goochland, and Ridgeway areas, Virginia: Amer. Jour. ol Sci. (5),17,p' 543,1929...Madagascar, central Maine, Llano County, Texas, and San Diego County, California. On the other hand, cavities...Goranson, E. A., The hiddenite deposit in Alexander County, North Carolina: Am. M.ineralogist, lS, pp. 2gG-302 |  | | Report (volume) | | General features____________________________ Coosa County _________ ____________________ Randolph County...Cherokee County_____________________________ 72 Elbert County _____________________________ 75 Hall County__...County_______________________________ 76 Hart County. ___ __ __________________ 77, Lumpkin and Union counti...___________ S3 Pickens County _______-______________________ 83 Rabun County-_____________________________...____________ 86 Troup County ________________________________ 86 Upson County _______________________________ |  | | Journal (article/letter/editorial) | | Keystonepegmatites. Pegau5 reportssimilarbandsin the Virginia pegmatites, wheregarnets,tourmaline,andparallelgrowthof...A.: The pegmatitesof the Amelia, Goochlandand Ridgeway areas, Va. Am. Jour. Sei., 5th series, vol. x7...microscopic examination showit to containmicrocline, oligoclase, quartz, muscovite, tourmaline, sericite, and |  | | Journal (article/letter/editorial) | | meters from the margins. Microcline, qnartz and oligoclase are the chief minerals. (2) Schorl-muscovite...in their mineralogy, containing mainly quartz, oligoclase and muscovite. A zone of pegmatites in gneissesclosely...Georgia and South Carolina and the Ridgeway-Sandy Ridge district of Virginia regional color variations in muscovite...thickness and consist of microcline, quartz, oligoclase, muscovite, biotite and schorl. These interior...Districts. In the climax area of northeastern Lake County, Butler and Vanderwilt (1933)have noted the marked |  | | Report (edition) | | massive fine-grained epidiorite (hornblende oligoclase rocks with metamorphic texture). It is difficult...Worcestershire W^W' Haysladl^'v'.-^A'xy / QuarryA County Quarryr* I t i 1 Gardiner's Quarry 1 Fig. 7...rock. An example of garnet-biotite-muscovite-oligoclase schist suggests that this host was of greywacke...Limestone (the Ridgeway) can be seen curving towards the Malvemian of British Camp. Beyond the Ridgeway is an...stands a prominent obelisk. Westwards from the Ridgeway there is the broad valley of the Elton Beds, then |  | | Report (issue) | | SIGNIFICANCE OF THE QUARTZITE ON PILOT MOUNTAIN, SURRY COUNTY, NORTH CAROLINA DAN WALKER. . . . . . . . . ....Leonard S. Wiener for providing some information on county roads at a critical time. iv CAROLINA GEOLOGICAL...Mountains window is located in North Carolina and Virginia at the northeast end of the Inner Piedmont (Fig...Early Jurassic forming the Dan River and Davie County basins that flank the anticlinorium along suitable...siliceous cataclasite zones like the Stony Ridge. Virginia Division of Mineral Resources Publication 7, p |  | | Journal (article/letter/editorial) | | consisting mainly of well-foliated quartz-microcline-oligoclase-biotitegneiss, with some hornblende-gneiss and...MINISTRY OF LABOUR AND MINES, P.O. Box R.W. 135, RIDGEWAY, LUSAKA, N. RHODESIA. Abstract |  | | Report (volume) | | ...... 51 Baltimore County .................................... 51 Howard County.......................CHAPTER III. GRANITES OF VIRGINIA ...................................... The Virginia Piedmont region ......77 77 CONTENTS. 5 CHAPTER III. GRANITES OP VIRGINIA Continued. PageScientific discussion Continued......... Chesterfield County (south of James River)................ Henrico County (north of James River)......................................... Fairfax County area ......................................... |  | | Book (volume) | | ASHTABULA COUNTY CONNEAUT, area pits, quarries, rd. cuts, etc.⎯cone-in-cone Calcite. CLERMONT COUNTY MILFORD...CLINTON COUNTY WILMINGTON, area of Todd’s Ford, a mineral deposit⎯Hematite. COSHOCTON COUNTY AREA, townships...townships of Washington, Virginia, Bedford, Jackson, Jefferson, Bethlehem, Monroe and Clark; on regional...CUYAHOGA COUNTY CHAGRIN FALLS (on Geauga Co. line), area quarries⎯oilstone. DELAWARE COUNTY DELAWARE...nodules⎯Pyrite (crystals sharply cubic). FRANKLIN COUNTY COLUMBUS, area countywide exposures of blue clay |
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