 | | 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). . . . |  | | Report (issue) | | NORTHEASTERN BURRO MOUNTAINS, GRANT COUNTY, NEW MEXICO Virginia T. McLemore Open-file Report 486 August...sandstone uranium, 3) base-metal veins, and 4) barite veins. Mineral distribution appears to be controlled...gold and silver are found along the fault, and barite without significant metals is found east of the...caldera in the northern Burro Mountains in Grant County, New Mexico. Volcanic-epithermal veins, specifically...sandstone uranium, 3) base-metal veins, and 4) barite veins are found in the Wild Horse Mesa area. The |  | | Book | | Geology and Virginia Richard V. Dietrich Professor of Geology and Dean School of Arts and Sciences,...University Press of Virginia Charlottesville Qt z.^.z THE UNIVERSITY PRESS OF VIRGINIA Copyright © 1970...by the Rector and Visitors of the University of Virginia First published 1970 Standard Book Number: 8139-0289-4...America To Frances, Rick, Kurt, Krista, and Virginia 161781 Digitized by the Internet Archive in...natives of Virginia and visitors to the Commonwealth—who are interested in geology and in Virginia. It attempts |  | | Report (volume) | | GWENDOLYN W. LUTTRELL, MARILYN L. HUBERT, and VIRGINIA M. JUSSEN U.S. GEOLOGICAL SURVEY BULLETIN ...ted States. I. Hubert, Marilyn L. II. Jussen, Virginia M. III. Title. IV. Series. QE75.B9 no. 1564 1986...years • Eocene Paleocene Cretaceous Lale Upper (K) Early Lower Mesozoic Jurassic (Mz) (J) Troassic...15-28. White, W. H., Erickson, G. P., Northcote, K. E., Dirom, G. E., and Harakal, J. E., 1967, Canadian... M. G., Toghill, P., Dean, W. T., and Ingham, J. K., 1978, U.S. Geological Survey Open-File Rept. 78-701 |  | | Journal (article/letter/editorial) | | district, Queensland; Edwards and Baker, 1953; Ramsay and Davidson, 1970) in New York State (Shaw, 1960)...1975; White, 1959; Shaw, 1960; Hietanen, 1967; Ramsay and Davidson, 1970; Ellis, 1978; Ortega-Gutierrez...scapolite-diopside and scapolite-diopside-amphibole-feldspar rocks as possible saline sources. Mora and Valley...SC = scapolite, Tm = epidote, K-feldspar, pyroxene; (8) barite, a -Mine or deposit of Metals Tm Ab ...= other minerals present: barite; (2) apatite; (3) zeolites; (4) K-feldspar; (5) amazonite, apatite; (6) |  | | Report (issue) | | Geological Survey Mail Stop 928 National Center Reston, Virginia 22092 James C. Izzell, Jr. Patterson Exploration...fault zone, eastern Piedmont of North Carolina and Virginia.................................................Jonesboro fault where it crosses U.S. Highway 70, Wake County, North Carolina..................................Joseph R. Wilson Ground-water resources of Wake County, North Carolina..................................recent geologic research in the eastern Piedmont of Virginia and South Carolina. The papers are arranged in |  | | Report (issue) | | and their geological framework in Canada and the USA, with analogies from other parts of the world. The...models for major types of uranium deposits in the USA (abstract only) ...................................Formation, southwestern Colorado and southeastern Utah, USA ...................................................Creek surficial uranium deposit, Stevens County, Washington, USA ............... 241 J.K. Otton, R.A. Zielinski............................................ 297 P. K. Mazimhaka, H.E. Hendry Basement geochemistry and |  | Mao, Jingwen, Qiu, Yumin, Goldfarb, Richard, Zhang, Zhaochong, Garwin, Steve, Fengshou, Ren (2002) Geology, distribution, and classification of gold deposits in the western Qinling belt, central China. Mineralium Deposita, 37 (3) 352-377 doi:10.1007/s00126-001-0249-0 | Journal (article/letter/editorial) | | 964, Denver Federal Center, Denver, CO 80225-0046, USA Z. Zhang Institute of Geology, Chinese Academy of...Corporation, 337 West Commercial St, Elko, NV 89801, USA R. Fengshou Bureau of Geology, Exploration and Development...are typical of the Carlin deposits in the western USA. These deposits are hosted by Triassic turbidities...Jiuyuan Dingping Lu’erba Anjiacha Maquan Counties/province (long. and lat.)a Deposit Mesozoic...carbonate rock Carlin-like Carlin-like Quartz, barite, sericite Quartz Quartz, sericite Quartz, pyrite |  | Peters, Stephen G., Ferdock, Gregory C., Woitsekhowskaya, Maria B., Leonardson, Robert, Rahn, Jerry (1998) Oreshoot zoning in the Carlin-type Betze orebody, Goldstrike Mine, Eureka County, Nevada. Open-File Report Vol. 1998 (98-620) US Geological Survey doi:10.3133/ofr98620 | Report (issue) | | the Carlin-type Betze Orebody, Goldstrike Mine, Eureka County, Nevada By Stephen G. Peters1, Gregory C...the Carlin-type Betze Orebody, Goldstrike Mine, Eureka County, Nevada by Stephen G. Peters1, Gregory C...Au/t (6.4 g Au/t). Mining rates at the Goldstrike Mine have been between 300,000 to 500,000 tonnes per...Goldstrike Mine area has been described in some detail by Sampson (1993), Volk and Lauha (1993), Campbell (1994)...paper. Blast hole assays that were collected for mine planning and metallurgical purposes on the 4,800 |  | | Journal (article/letter/editorial) | | III Department of Geology, Virginia Polytechnic Institute, Blacksburg, Virginia 24060 Nappe Formation in...area of about 800 sq mi (2600 km 2 ) along the Virginia - North Carolina border (Fig. 1). About half of...are interlayered biotite-quartz-feldspar gneiss, hornblende-feldspar gneiss, less abundant pelitic schist...pelitic schist, muscovite quartzite, and quartz-feldspar gneiss. In most exposures of these units, the...associated smalls c a l e folds (i)S,a/Ssch,seen Mine Jon S]( or S ' surface Cleavage mul1 ion (rare) |  | | Journal (issue) | | fc O L O G Y p & L ^ ^ T ^ r M O m A t t t i K /lo S II 1\ I v y / V. [\ •- ’v ? ^ ' ‘ Wayne...Schacht (who was bom Horace Greele} Schacht in the USA), President of the German Reichsbank. In du< course...adularia, calcite, chlorite minerals and anatase (Campbell, 1927). This assemblage is characteristic o f...the surrounding country rock during metamorphism. Ramsay and Huber (1983) suggest that the temperature of...detailed discussion of fibrous vein fillings, see Ramsay and Huber (1983, 1987). Faden are special examples |  | | Journal (article/letter/editorial) | | rocks County border Cretaceous and Tertiary intrusive rocks Early Proterozoic schist Mine or resource...Target ns g bur k en ins c i W unta Mo . Fig Sheep Mountain 3 Vulture Mine Big Horn Mountains...district-scale study area of Figure 3 (gray box) relative to county boundaries and nearby mountain ranges, mines, resources...Late Cretaceous granite, dated at 68.4 ± 1.7 Ma (K-Ar al., 1987). biotite) 10 km west of the study area...Resources Ltd., unpub. report, 1995). The Vulture lode mine, located just west of the study area in the Vulture |  | | Journal (article/letter/editorial) | | ®eld work in the Kwekwe district near the Indarama mine, approximately 200 km southwest of Harare, Zimbabwe...The central zone of the dike shows a typical K-feldspar-albite-sericite-pyrite (biotite?) alteration...CH-3012 Bern, Switzerland pyrite and secondary K-feldspar. Sulphide mineral separates of pyrite and minor...ppm have been found in the transition between the K-feldsparalbite-sericite-pyrite alteration and the...and Sato 1987; Nutt et al. 1988a,b; Pit®eld and Campbell 1990, 1993; Pit®eld et al. 1991; Carter 1990; |  | Costagliola, P., Benvenuti, M., Lattanzi, P., Tanelli, G. (1998) Metamorphogenic barite-pyrite (Pb-Zn-Ag) veins at pollone, apuane alps, tuscany: vein geometry, geothermobarometry, fluid inclusions and geochemistry. Mineralogy and Petrology, 62 (1) 29-60 doi:10.1007/bf01173761 | Journal (article/letter/editorial) | | Springer-Vertag 1998 Printed in Austria Metamorphogenic barite-pyrite (Pb-Zn-Ag) veins at Pollone, Apuane Alps...version accepted December 19, 1997 Summary The barite-pyrite-(Pb-Zn-Ag) deposit of Pollone is located...syngenetic, barite-pyrite orebodies, whereas the northern area is characterized by a barite-pyrite-(Pb-Zn-Ag)...to the presence of Rb-poor muscovite and Sr-rich barite. Rb-depleted muscovites suggest mineral-fluid interaction...Pollone host rocks. The progressive decrease of Sr in barite with increasing distance from the orebodies may |  | | Journal (article/letter/editorial) | | mineralization in the southwestern Nevada volcanic field, USA S t e p h e n B. C a s t o r a a n d S t e v e n...School of Mines, Universityof Nevada, Reno, NV 89557. USA bDepartment of Geological Sciences, Mackay School...School of Mines, Universityof Nevada, Reno. NV 89557, USA (Received August 27, 1991; accepted after revision...mineralization in the southwestern Nevada volcanic field, USA. Ore Geol. Rev., 7: 193-223. The southwestern Nevada...Mountain. Sedimentary-rock-hosted mineralization at Mine Mountain is spatially associated with a thrust fault |  | Ramsay, R.R., Eves, A.E., Denyszyn, S.W., Wingate, M.T.D., Fiorentini, M., Gwalani, L.G., Rogers, K.A. (2019) Geology and geochronology of the Paleoproterozoic Hart Dolerite, Western Australia. Precambrian Research, 335. 105482 doi:10.1016/j.precamres.2019.105482 | Journal (article/letter/editorial) | | Paleoproterozoic Hart Dolerite, Western Australia R.R. Ramsay, A.E. Eves, S.W. Denyszyn, M.T.D. Wingate, M. Fiorentini...October 2019 Please cite this article as: R.R. Ramsay, A.E. Eves, S.W. Denyszyn, M.T.D. Wingate, M. Fiorentini...Paleoproterozoic Hart Dolerite, Western Australia Ramsay, R.R., 1 Eves A.E., 2 Denyszyn, S.W., Gwalani,...previous regional geochronology of late-stage quartz–feldspar granophyres, and with a model of rapid emplacement...rocks, petrography, UPb geochronology Page |1 Ramsay et al_Hart_Dolerite 2018 INTRODUCTION Large |  | | Report (volume) | | Understanding International Mineral Resources G. H. I. J. K. L. Part 3. Tertiary calderas and regional extension...Cu-Mo deposit, Maine By Robert A. Ayuso and Nora K. Foley..............................................Lizeca, and Fernando Murillo................... 79 K-Ar ages of Bolivian Tertiary polymetallic vein deposits...Anna B. Wilson, Theresa M. Cookro, Viki Bankey, Greg K. Lee, and John S. Dersch............................silver, mercury, copper, and palladium in Lemhi County, east-central Idaho By George A. Desborough, William |  | | Journal (article/letter/editorial) | | former lead mining area in Scotland S. Hillier a,*, K. Suzuki b, J. Cotter-Howells b a Macaulay Land Use...and dolomite, and small amounts of calcite and barite (Table 3). An example of the Rietveld full pattern...601 The mineral assemblage of quartz, albite, K-feldspar, chlorite and illite in all samples (Tables 3...of appreciable cerussite, calcite, dolomite and barite in the Glengonnar water is undoubtedly linked to...tends to be most abundant in the silt size range, K-feldspar is most abundant in the ®ner size fractions, |  | | Journal (article/letter/editorial) | | deposits: evidence from alteration systematics T. Campbell McCuaig ‘, Robert Kerrich * Department of Geological...Ca-silicates to a muscovite/paragonite-chlorite f albite/K-feldspars assemblage; carbonization of the metamo... Geochemically this is expressed as additions of K, Rb, Ba, Cs, and the volatiles H,O, CO,, CH,, H,S...S in envelopes of meter to kilometer scale. K/Rb and K/Ba ratios are close to average crustal values,...potentially ruling out late stage magmatic fluids where K/Rb and K/Ba are respectively lower and higher than crustal |  | | Journal (article/letter/editorial) | | other elements may also be present (Antweiler and Campbell, 1977; Knight and McTaggart, 1986). As the proportion...the Timmins-OchaliBerlin mine, Columbia (Fisher, 1950) and at the O'Brien mine, Quebec (Mills, 1954). However...character. Gold and silver grains from the Ross Mine, Ontario, 339 SILVER CONTENT (FINENESS) OF GOLD...in intrusive rocks (Troop, 1986) suggest the Ross Mine may have a different origin to typical Abitibi Belt...silver (Fisher, 1945). A probe analysis from the AI Mine at Woods Point, for example, has a fineness of 941 |  | | Report (volume) | | ----------Six new members of the James Run Formation, Cecil County, northeastern Maryland, by Michael W. Higgins ...or Sandstone (Upper Silurian) in eastern West Virginia, by William J. Perry, Jr --------------------The...Rockingham, Page, Shenandoah, and Warren Counties, Virginia, by William J. Perry, Jr ------------The...Arizona -----Generalized geologic map of Cecil County, Md., showing members of the James Run Formation...Sandstone, and "Keefer" Sandstone in West Virginia and Virginia --------------------- 3. 4. 5. III 119 |  | HURAI, V., PROCHASKA, W., LEXA, O., SCHULMANN, K., THOMAS, R., IVAN, P. (2008) High-density nitrogen inclusions in barite from a giant siderite vein: implications for Alpine evolution of the Variscan basement of Western Carpathians, Slovakia. Journal of Metamorphic Geology, 26 (4) 487-498 doi:10.1111/j.1525-1314.2008.00775.x | Journal (article/letter/editorial) | | 2008.00775.x High-density nitrogen inclusions in barite from a giant siderite vein: implications for Alpine...Carpathians, Slovakia V. HURAI,1 W. PROCHASKA,2 O. LEXA,3 K. SCHULMANN,4 R. THOMAS5 AND P. IVAN6 1 Geological...densities of fluid inclusions were revealed in siderite–barite intergrowths of the Droždiak polymetallic vein...contrast, mono- and two-phase aqueous inclusions in barite exhibited total salinities between 2 and 22 wt%...CaCl2-dominated compositions. The aqueous inclusions in barite were closely associated with very high-density |  | Czuppon, Gy, Ramsay, R. R., Özgenc, I., Demény, A., Gwalani, L. G., Rogers, K., Eves, A., Papp, L., Palcsu, L., Berkesi, M., Downes, P. J. (2014) Stable (H, O, C) and noble-gas (He and Ar) isotopic compositions from calcite and fluorite in the Speewah Dome, Kimberley Region, Western Australia: implications for the conditions of crystallization and evidence for the influence of crustal-mantle fluid mixing. Mineralogy and Petrology, 108 (6) 759-775 doi:10.1007/s00710-014-0333-7 | Journal (article/letter/editorial) | | mixing Gy Czuppon & R. R. Ramsay & I. Özgenc & A. Demény & L. G. Gwalani & K. Rogers & A. Eves & L. Papp... Bem tér 18/C, Debrecen H-4026, Hungary R. R. Ramsay C/- Trident Capital Ltd, Level 24, 44 St Georges...University, 35160 – Buca, Izmir, Turkey L. G. Gwalani : K. Rogers Speewah Research Project C/- King River Copper...orthomagmatic fluids and reaction with calcite-rich county rocks (Richardson and Holland 1979; Bühn et al...(Taylor, 1974; Samson et al., 1995; Taylor 1997; Campbell and Larson 1998; Demény et al., 1998; Bühn et |  | | Report (issue) | | Geologic Map of the Wakefield Quadrangle Gogebic County, Michigan by William C. Prlnz and Harold A. Hubbard...450-500 m thick. Unit Is known mainly from old mine and drilling records. Best exposures are on Verona...(Precambrlan W). Massive pegmatite composed of pink K-feldspar crystals as long as 50 cm, quartz, and muscovlte...schist probably derived from the Ramsay Foramtlon. Areas in which Ramsay Formation or Puritan Quartz Honzonlte...te schist. Feldspar in the schist Is albite-oligoclase and some K-spar; most feldspar shows sericftlc |  | Sykora, Stephanie, Selley, David, Cooke, David R., Harris, Anthony C. (2018) The Structure and Significance of Anhydrite-Bearing Vein Arrays, Lienetz Orebody, Lihir Gold Deposit, Papua New Guinea. Economic Geology, 113 (1) 237-270 doi:10.5382/econgeo.2018.4550 | Journal (article/letter/editorial) | | alteration zone at Lihir is a broad zone of biotite ± K-feldspar–altered rocks that contain thick (0.1–>30 m)... 240 SYKORA ET AL. A 450 000 E 460 000 E B N mine 9 660 000 N (θ = +7°) B 9 650 000 N e is r...rsl 5 g/t Au isosurface, projected to 100 m rsl k ne Luise Volcano Kinami Volcano Huniho Volcano Londolovit...part to Au tenor and distribution (Fig. 3A, B). The mine geologic model uses this zonation to classify ore...Pyrite veins > 95% K-feldspar (adularia), illite and pyrite alteration 1 to 95% K-feldspar (adularia), illite |
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